# Serverless Tools

> Free, private, browser-based developer and productivity tools.
> No data leaves your device. No accounts required.

Serverless Tools is a collection of 414+ browser-based utilities
that run entirely client-side using JavaScript. There is no server
processing — all computation happens in the user's browser. The site
is a static site hosted on Cloudflare Pages for maximum speed and
reliability. Available in 5 languages: English, Arabic, Spanish, Chinese, Portuguese.

## Core Pages

- [Homepage](https://serverless.tools/): Main tool directory with search and categories
- [About](https://serverless.tools/about/): Our mission — privacy-first, free tools
- [Privacy Policy](https://serverless.tools/privacy/): Zero data collection policy
- [Contact](https://serverless.tools/contact/): Get in touch

## Tool Categories

- **AI & Machine Learning** (13 tools): AI Article Writer & Rewriter — Free In-Browser Content Generator, AI Camera Sentinel — Smart Security Monitor & Multi-Camera Vision, AI Object Detection — Free In-Browser Image Object Recognizer, AI Resume Analyzer — ATS Compatibility Score & Keyword Optimizer, AI Sentiment Analyzer — Free In-Browser Text Emotion Detector, ...
- **Text Tools** (14 tools): Emoji Picker — Unicode Symbol Search, Copy & Developer Reference, Fancy Text Generator — 20+ Unicode Styles for Social Media, Find & Replace — Bulk Text Search & Regex Substitution, Lorem Ipsum Generator — Professional Dummy Text & Placeholder Synthesis, Markdown Preview — Real-Time GFM Editor & Typographic Studio, ...
- **Image Tools** (14 tools): AI Background Remover — Free Bulk Cutout Tool, AI Image Colorizer — Free In-Browser Black & White Photo Colorization, AI Image Upscaler & Enhancer — Enlarge Photos 4x in Browser, Depth Map Generator — 3D AI Monocular Depth Estimation, Face Blur & Anonymizer — Free AI Photo Privacy Protection, ...
- **Developer Tools** (47 tools): .htaccess Generator — Apache Config Builder & Rewrite Rule Maker, API Response Mocker — Free Online Mock API Endpoint Creator, Base64 Encoder & Decoder — Free Online Text & Data Converter, Border Radius Generator — Visual CSS Corner Rounding & Shape Styler, Box Shadow Generator — Visual CSS Elevation & Shadow Styler, ...
- **Math & Calculators** (32 tools): Age Calculator — Exact Chronological Age in Years, Months, Days & Hours, Aspect Ratio Calculator — Visual Screen, Image & Video Dimension Tool, Circle Calculator — Area, Circumference, Arc, Chord & Sector Solver, Date Add/Subtract Calculator — Add Days, Weeks, Months & Years to Any Date, Date Difference Calculator — Exact Days, Weeks, Months & Business Days, ...
- **Converters** (83 tools): AAC to MP3 Converter — Bulk 320kbps, AVI to GIF Converter — Bulk Animated Maker, AVI to MP3 Converter — Extract Audio in High Quality, AVI to MP4 Converter — Universal In-Browser Video Transcoder, AVI to WebM Converter — Modern Open Web Video Transcoder, ...
- **Security & Encryption** (14 tools): API Key Generator — Cryptographically Secure Secret Key & Token Creator, Air-Gapped 2FA/TOTP Key & QR Studio — RFC 6238 Generator, Air-Gapped WireGuard Keypair & Config Studio — Zero-Knowledge VPN Generator, Bcrypt Generator — Hash & Verify Passwords with Salt Rounds, CSP (Content Security Policy) & Nonce Studio, ...
- **SEO Tools** (5 tools): Meta Tag Generator — Complete HTML, Open Graph & Twitter Cards SEO Builder, Open Graph Preview — Social Media Card Tester & Meta Tag Simulator, Privacy Policy Generator — GDPR, CCPA & Global Compliance Builder, Sitemap XML Generator — XML & Image Sitemap Protocol Builder, robots.txt Generator — Robots Exclusion Protocol & AI Bot Control Builder
- **Audio Tools** (14 tools): AI Audio Enhancer — Boost Clarity, Normalize & Equalize Sound, AI Audio Noise Remover — Free In-Browser Background Noise Cleaner, AI Vocal Remover & Stem Splitter — Free In-Browser Acapella & Karaoke Maker, AI Voice Changer & Vocal Pitch Shifter — Free In-Browser Gender Swap & Audio Effects, Audio BPM, Musical Key & Beat Grid Studio — In-Browser DJ MIR Engine, ...
- **Video Tools** (13 tools): AI Video Face Redactor — Local Bulk Face Blur & Anonymization, Dual Subtitle Studio & Bilingual Merger — Synchronize & Combine Captions, In-Browser 3D .cube LUT Studio & Grader — Real-Time Video & Photo Colorist, In-Browser WebGL Chroma Key & Green Screen Studio — Real-Time Background Isolator, Lossless Video Audio Pitch & Formant Shifter — Sync-Preserved In-Browser DSP, ...
- **Social Media Tools** (2 tools): Twitter/X Character Counter — Real-Time Tweet Analyzer & Thread Planner, WhatsApp Status Video Maker — Animated Text, Audio & Story Creator
- **Finance & Business** (37 tools): Accounting Period Calculator — Fiscal Quarter, Month & Period Tool, Age of Receivables Calculator - Free Aging Analysis Tool, Amortization Calculator - Free Loan Payment Schedule Tool, Bill Splitter - Free Tip, Tax, and Per-Person Calculator, Billable Hours Calculator - Free Time Tracking & Billing Tool, ...
- **Education & Learning** (3 tools): Academic Citation & Bibliography Studio — APA 7th, MLA 9th, Chicago & BibTeX, Cornell Notes Studio & Printable PDF Maker — 3-Section Note System, GPA Calculator Studio — Credit-Weighted 4.0 College Grade Point Average
- **Design & Creative** (19 tools): ASCII Art Generator — Free Online Image to ASCII Converter & Text Banner Maker, Avatar Generator — Free Online Unique Profile Picture & Icon Maker, Background Pattern Generator — Free Online Seamless CSS & SVG Pattern Maker, Business Card Maker — Free Online Card Designer with Templates, CSS Gradient Generator — Free Online Visual Gradient Maker & CSS Code Builder, ...
- **Writing & Content** (3 tools): Headline Analyzer — Score, Optimize & Preview Titles Online, Readability Score Analyzer — Flesch-Kincaid, SMOG & Fog Metrics Online, Text Diff Viewer — Side-by-Side Visual Comparison & Patch Tool
- **Data & Analytics** (5 tools): CSV Delimiter, Encoding & Dialect Normalizer — Fix Mojibake & Excel BOM, Fake Data Generator — Bulk Test Data, JSON Viewer — Interactive Tree Explorer & Formatter, Parquet & DuckDB In-Browser SQL Studio — Client-Side Columnar Explorer, SQLite Viewer & SQL Query Studio — In-Browser Database Explorer
- **Productivity** (20 tools): AI Posture Coach — Real-Time Ergonomic Posture Monitor & Focus Timer, Countdown Timer — Visual Stopwatch, Interval Ring & Custom Presets, Decision Matrix Tool — Weighted Scoring Pugh Matrix & Multi-Criteria Analysis, Digital Whiteboard — Infinite Canvas Drawing, Sticky Notes & Vector Export, Email Signature Generator — Professional HTML Signatures & Social Links, ...
- **Health & Fitness** (9 tools): BMI Calculator — Free Body Mass Index & Healthy Weight Tool, Body Fat Calculator — Free US Navy Method Percentage Tool, Calorie Calculator — Free TDEE, BMR & Daily Calorie Deficit Tool, Heart Rate Zone Calculator — Free Karvonen Target Heart Rate Training Zones, Ideal Weight Calculator — Free Clinical Formula & Healthy BMI Range Tool, ...
- **Other** (62 tools): Audio Merger & Joiner — Combine Music, Podcasts & Sound Clips, Audio Recorder — High-Quality Voice & Microphone Studio, Barcode Generator — Code 128, Code 39, UPC & Bulk Label Creator, CSS Glassmorphism Generator — Frosted Glass UI Effect & Code, Capacitor Charge Calculator — RC Time Constant, Energy & Decay, ...

## Tools

### AI & Machine Learning

- [AI Article Writer & Rewriter — Free In-Browser Content Generator](https://serverless.tools/ai-article-writer/): Free, private in-browser AI article writer and rewriter.
- [AI Camera Sentinel — Smart Security Monitor & Multi-Camera Vision](https://serverless.tools/camera-sentinel/): Free, private in-browser AI security camera monitor.
- [AI Object Detection — Free In-Browser Image Object Recognizer](https://serverless.tools/object-detection/): Free online AI object detection tool running 100% in your browser.
- [AI Resume Analyzer — ATS Compatibility Score & Keyword Optimizer](https://serverless.tools/resume-analyzer/): Free, private in-browser AI resume analyzer with ATS scoring, PDF/DOCX parsing, semantic keyword matching, readability audit, and downloadable reports.
- [AI Sentiment Analyzer — Free In-Browser Text Emotion Detector](https://serverless.tools/sentiment-analyzer/): Free in-browser AI sentiment analyzer to detect positive, negative, and neutral emotional tone with statistical confidence scores.
- [AI Speech to Text — Free In-Browser Audio Transcriber](https://serverless.tools/speech-to-text/): Free in-browser AI speech-to-text tool to transcribe audio and video files locally.
- [AI Style Transfer — Free In-Browser Artistic Image Stylizer](https://serverless.tools/style-transfer/): Free in-browser AI style transfer tool.
- [AI Text to Speech — Free In-Browser Voice Generator & Text Reader](https://serverless.tools/text-to-speech/): Free in-browser AI text-to-speech converter.
- [CSV Data Analyzer — Batch Insights & In-Browser Visual Analytics](https://serverless.tools/csv-data-analyzer/): Analyze CSV files instantly with high-speed in-browser batch processing, automated statistical breakdowns, multi-type interactive charts, data filtering, and column validation — 100% client-side with zero cloud uploads.
- [LocalMind — Chat with PDF & Documents Using Client-Side AI](https://serverless.tools/local-mind/): Analyze and chat with PDF, Word, and text documents directly in your browser using hardware-accelerated on-device neural language models, semantic vector search, and page-exact citations — 100% client-side with zero cloud uploads.
- [Multi-LLM Tokenizer & Pricing Studio](https://serverless.tools/llm-token-counter/): Free, private, in-browser Multi-LLM Tokenizer & Pricing Studio.
- [Named Entity Recognition (NER) Extractor — Client-Side AI Entity Tagger](https://serverless.tools/named-entity-extractor/): Extract and classify persons, organizations, geopolitical locations, and products from unstructured text using in-browser neural token classification with granular confidence scores — 100% client-side with zero cloud uploads.
- [OCR Text Extractor — Free In-Browser Image to Text AI](https://serverless.tools/ocr-text-extractor/): Free online OCR text extractor that runs 100% locally in your browser.

### Text Tools

- [Emoji Picker — Unicode Symbol Search, Copy & Developer Reference](https://serverless.tools/emoji-picker/): Free online emoji picker with 1,500+ standard Unicode emojis.
- [Fancy Text Generator — 20+ Unicode Styles for Social Media](https://serverless.tools/fancy-text-generator/): Free, private, serverless Fancy Text Generator with 20+ Unicode styles.
- [Find & Replace — Bulk Text Search & Regex Substitution](https://serverless.tools/find-replace/): Free, private, serverless Find & Replace tool with bulk support.
- [Lorem Ipsum Generator — Professional Dummy Text & Placeholder Synthesis](https://serverless.tools/lorem-ipsum-generator/): Free, private, serverless Lorem Ipsum Generator.
- [Markdown Preview — Real-Time GFM Editor & Typographic Studio](https://serverless.tools/markdown-preview/): Free, private, serverless Markdown Preview studio with GitHub Flavored Markdown (GFM) support.
- [Remove Duplicate Lines — Enterprise Text & List Deduplicator](https://serverless.tools/remove-duplicate-lines/): Free, private, serverless Remove Duplicate Lines tool.
- [String Length Counter — Advanced Character & UTF-8 Byte Profiler](https://serverless.tools/string-length/): Free, private, serverless string length counter.
- [Text Case Converter — Bulk Typographic & Code Casing Studio](https://serverless.tools/text-case-converter/): Free, private, serverless text case converter with bulk support.
- [Text Diff Checker — Side-by-Side Comparison & Delta Visualizer](https://serverless.tools/text-diff-checker/): Free, private, serverless text diff checker.
- [Text Repeater — High-Volume String Replication Studio](https://serverless.tools/text-repeater/): Free, private, serverless text repeater.
- [Text Reverser — Flip & Mirror Text Online](https://serverless.tools/text-reverser/): Free, private online text reverser.
- [Text to Slug Generator — Bulk URL Slug Creator Online](https://serverless.tools/text-to-slug/): Free, private, online text to slug generator with bulk processing.
- [Unicode Character Lookup — Code Point & Symbol Explorer Online](https://serverless.tools/unicode-lookup/): Free, private, serverless Unicode character lookup.
- [Word Counter — Real-Time Character, Sentence & Reading Time Analytics](https://serverless.tools/word-counter/): Free, private, online word counter.

### Image Tools

- [AI Background Remover — Free Bulk Cutout Tool](https://serverless.tools/background-remover/): Free online AI background remover.
- [AI Image Colorizer — Free In-Browser Black & White Photo Colorization](https://serverless.tools/image-colorizer/): Free serverless image colorizer that runs entirely in your browser — zero uploads, zero server tracking.
- [AI Image Upscaler & Enhancer — Enlarge Photos 4x in Browser](https://serverless.tools/image-upscaler/): Enlarge photos 2x and 4x up to 4K resolution directly in your browser using hardware-accelerated deep super-resolution and unsharp mask sharpening — 100% client-side with zero cloud uploads.
- [Depth Map Generator — 3D AI Monocular Depth Estimation](https://serverless.tools/depth-map-generator/): Free online AI depth map generator.
- [Face Blur & Anonymizer — Free AI Photo Privacy Protection](https://serverless.tools/face-blur/): Free serverless face blur and anonymizer tool.
- [Favicon Generator — Free In-Browser App Icon & Meta Tag Creator](https://serverless.tools/favicon-generator/): Free, private, serverless favicon generator.
- [Image Color Palette Extractor — Free In-Browser Dominant Color Finder](https://serverless.tools/image-color-extractor/): Free, private, serverless image color palette extractor.
- [Image Compressor — Free In-Browser Bulk Photo Compression & Resizing](https://serverless.tools/image-compressor/): Free, private, serverless image compressor.
- [Image Cropper — Free In-Browser Precision Crop & Aspect Ratio Tool](https://serverless.tools/image-cropper/): Free, private, serverless image cropper.
- [Image EXIF Viewer — Free In-Browser Photo Metadata & GPS Inspector](https://serverless.tools/image-exif-viewer/): Free, private, serverless image EXIF viewer.
- [Image Format Converter — Free In-Browser Batch Photo & Graphic Transcoder](https://serverless.tools/image-converter/): Convert images between PNG, JPEG, WebP, GIF, and BMP formats in your browser without file uploads.
- [Image Resizer — Free In-Browser Batch Photo & Dimension Scaling Tool](https://serverless.tools/image-resizer/): Free, private, serverless image resizer.
- [Image Watermark Tool — Free In-Browser Photo Watermark Maker & Protection](https://serverless.tools/image-watermark/): Free, private, serverless online image watermark tool.
- [Image to Pattern Converter — Free Cross-Stitch, Pixel Art & Knitting Grid Maker](https://serverless.tools/image-to-pattern/): Free image to pattern generator.

### Developer Tools

- [.htaccess Generator — Apache Config Builder & Rewrite Rule Maker](https://serverless.tools/htaccess-generator/): Generate production-ready Apache .htaccess configuration files with visual controls.
- [API Response Mocker — Free Online Mock API Endpoint Creator](https://serverless.tools/api-mocker/): Define, simulate, and test fake REST API endpoints in your browser.
- [Base64 Encoder & Decoder — Free Online Text & Data Converter](https://serverless.tools/base64-encoder/): Encode and decode Base64 strings instantly in your browser.
- [Border Radius Generator — Visual CSS Corner Rounding & Shape Styler](https://serverless.tools/border-radius-generator/): Free visual CSS border-radius generator.
- [Box Shadow Generator — Visual CSS Elevation & Shadow Styler](https://serverless.tools/box-shadow-generator/): Free visual CSS box-shadow generator with live preview.
- [CSS Animation Generator — Keyframe Animation & Motion Styler](https://serverless.tools/css-animation-generator/): Free visual CSS animation generator with live preview.
- [CSS Flexbox & Grid Playground — Visual Layout Builder & Styler](https://serverless.tools/css-flexbox-grid/): Free visual CSS Flexbox and Grid playground with live preview.
- [CSS Gradient Generator — Linear, Radial & Conic Color Styler](https://serverless.tools/css-gradient-generator/): Free visual CSS gradient generator with live preview.
- [CSS Minifier & Beautifier — Free Online Stylesheet Optimizer](https://serverless.tools/css-minifier/): Minify and beautify CSS code instantly in your browser.
- [CSS Text Shadow Generator & Visual Typography Studio — 3D, Glow & Layered Effects](https://serverless.tools/text-shadow-generator/): Free, private, serverless CSS text-shadow generator.
- [Caddyfile Studio & Nginx-to-Caddy Converter](https://serverless.tools/caddyfile-generator/): Free, private, in-browser Caddyfile Studio and Nginx-to-Caddy Converter.
- [Changelog Generator — Keep a Changelog & SemVer Markdown Creator](https://serverless.tools/changelog-generator/): Create professional, standards-compliant CHANGELOG.md files instantly in your browser.
- [Color Palette Generator — Harmonious Color Schemes & CSS Export](https://serverless.tools/color-palette-generator/): Generate balanced, harmonious color palettes instantly in your browser.
- [Color Picker & Converter — Instant HEX, RGB & HSL Codes](https://serverless.tools/color-picker/): Pick and convert colors between HEX, RGB, and HSL formats instantly in your browser.
- [Cron Expression Generator — Interactive Schedule Builder](https://serverless.tools/cron-generator/): Professional, private, serverless cron expression generator and visual crontab builder.
- [Diff Checker — Side-by-Side Text & Code Comparison](https://serverless.tools/diff-checker/): Free, private, serverless diff checker and code comparison studio.
- [Docker Compose Generator — Visual YAML Builder](https://serverless.tools/docker-compose-generator/): Professional, private, serverless Docker Compose generator and visual YAML builder.
- [Docker Compose to Kubernetes (K8s) Studio — In-Browser YAML Transpiler](https://serverless.tools/compose-to-k8s/): Free, private in-browser Docker Compose to Kubernetes manifests transpiler.
- [Dockerfile Security Linter & Production Best-Practices Studio](https://serverless.tools/dockerfile-linter/): Free, private, serverless in-browser Dockerfile security linter and best-practices auditor.
- [Environment Variable Editor — Free Online .env File Editor](https://serverless.tools/env-editor/): Professional, private, serverless .env file editor and environment variable manager.
- [Epoch & Unix Timestamp Converter — Bulk Timestamp Studio](https://serverless.tools/epoch-converter/): Professional, high-precision Unix epoch timestamp converter with bulk conversion support.
- [Git Commit Message Generator — Conventional Commits Studio](https://serverless.tools/commit-message/): Free, private, serverless Git commit message generator.
- [GraphQL Query Builder — Visual Query Constructor Studio](https://serverless.tools/graphql-query-builder/): Free, private, serverless GraphQL query builder studio.
- [HAR to Postman & OpenAPI Converter](https://serverless.tools/har-converter/): Free, private, in-browser HAR to Postman and OpenAPI Converter.
- [HTML Formatter & Minifier — Bulk Markup Studio](https://serverless.tools/html-formatter/): Free, private, serverless HTML formatter and minifier with bulk processing support.
- [JSON Formatter & Validator — In-Place Data Studio](https://serverless.tools/json-formatter/): Free, private, serverless JSON formatter, beautifier, and validator studio.
- [JSON Schema Validator — Draft-07 Data Contract & Syntax Testing Studio](https://serverless.tools/json-schema-validator/): Validate JSON data against JSON Schema Draft-07 in real time.
- [JWT Decoder & Inspector — In-Browser Token Debugger & Claims Studio](https://serverless.tools/jwt-decoder/): Free, private, client-side JWT decoder and inspector studio.
- [JavaScript Minifier & Beautifier — In-Browser Code Compression Studio](https://serverless.tools/js-minifier/): Free, private, serverless JavaScript minifier and code beautifier studio.
- [Linux Systemd Service & Timer Generator](https://serverless.tools/systemd-service-generator/): Free, private, serverless Linux Systemd Service & Timer Generator.
- [Markdown Table Generator & Visual Spreadsheet Editor Studio](https://serverless.tools/markdown-table-generator/): Free, private, serverless online Markdown table generator with visual spreadsheet editor.
- [Nginx Config Generator & Reverse Proxy Builder — Production nginx.conf Studio](https://serverless.tools/nginx-config-generator/): Free, private, serverless Nginx config generator.
- [Regex Generator & Visual Pattern Builder Studio — Build, Test & Debug Regular Expressions](https://serverless.tools/regex-generator/): Free, private, serverless regex generator and visual pattern builder.
- [Regex Tester & Debugger — Interactive Regular Expression Sandbox](https://serverless.tools/regex-tester/): Free, private, serverless regex tester and debugger.
- [SMD Resistor EIA-96 & Chip Code Decoder](https://serverless.tools/smd-resistor-eia96-decoder/): Free, private, serverless in-browser SMD resistor chip code decoder.
- [SQL Formatter & Query Beautifier Studio — Format, Minify & Clean SQL](https://serverless.tools/sql-formatter/): Free, private, serverless SQL formatter and query beautifier.
- [SQL to Drizzle & Prisma Schema Studio](https://serverless.tools/sql-to-drizzle/): Free, private, in-browser SQL to Drizzle and Prisma Schema Studio.
- [Subnet Calculator & CIDR Network Planner Studio — IPv4 Architecture Tool](https://serverless.tools/subnet-calculator/): Free, private, serverless IPv4 subnet calculator and CIDR planner.
- [URL Encoder & Decoder Studio — RFC 3986 Percent-Encoding](https://serverless.tools/url-encoder/): Professional in-browser URL encoder and decoder.
- [UUID Generator Studio — Bulk RFC 4122 v4, v1 & Nano ID](https://serverless.tools/uuid-generator/): Free, private, in-browser UUID generator with bulk support up to 1000 IDs.
- [Unix Timestamp Converter & Epoch Time Studio — Bidirectional Date Tool](https://serverless.tools/timestamp-converter/): Free, private, serverless Unix timestamp converter.
- [Web Serial & Bluetooth Hardware Terminal — In-Browser Microcontroller Console](https://serverless.tools/web-serial-terminal/): Free, private, serverless driverless in-browser Web Serial & Bluetooth hardware terminal.
- [WebRTC SDP Decoder & Media Inspector](https://serverless.tools/webrtc-sdp-analyzer/): Free, private, in-browser WebRTC SDP Decoder & Media Inspector.
- [Webhook HMAC Signature Debugger & Verifier Studio](https://serverless.tools/webhook-signature-studio/): Free, private, serverless in-browser Webhook HMAC signature debugger and verifier.
- [XML Formatter & Minifier Studio — Pretty Print, Minify & Inspect](https://serverless.tools/xml-formatter/): Free, private, in-browser XML formatter and minifier.
- [XML to JSON Converter Studio — Type Inference & Attribute Mapping](https://serverless.tools/xml-to-json/): Free, private, in-browser XML to JSON converter.
- [cURL to Code Multi-Converter](https://serverless.tools/curl-to-code/): Free, private, serverless cURL to Code Multi-Converter.

### Math & Calculators

- [Age Calculator — Exact Chronological Age in Years, Months, Days & Hours](https://serverless.tools/age-calculator/): Free chronological age calculator.
- [Aspect Ratio Calculator — Visual Screen, Image & Video Dimension Tool](https://serverless.tools/aspect-ratio-calculator/): Free visual aspect ratio calculator.
- [Circle Calculator — Area, Circumference, Arc, Chord & Sector Solver](https://serverless.tools/circle-calculator/): Free online circle calculator for radius, diameter, circumference, area, arc length, chord length, and sector area.
- [Date Add/Subtract Calculator — Add Days, Weeks, Months & Years to Any Date](https://serverless.tools/date-add-subtract-calculator/): Free online date calculator to add or subtract days, weeks, months, or years from any calendar date.
- [Date Difference Calculator — Exact Days, Weeks, Months & Business Days](https://serverless.tools/date-difference-calculator/): Free date difference calculator.
- [Discount Calculator — Instant Sale Price, Bulk Markdown & Savings Tool](https://serverless.tools/discount-calculator/): Free discount calculator.
- [Electricity Cost Calculator — Appliance Energy Bill & kWh Carbon Tool](https://serverless.tools/electricity-cost-calculator/): Free electricity cost calculator.
- [Equation Solver — Step-by-Step Linear, Quadratic & Cubic Roots](https://serverless.tools/equation-solver/): Free equation solver for linear, quadratic, and cubic equations.
- [Excel Formula Helper — VLOOKUP, XLOOKUP, INDEX-MATCH & 30+ Formulas](https://serverless.tools/excel-formula-helper/): Free Excel formula helper.
- [Exponent Calculator — Powers, Fractional Roots & Scientific Notation](https://serverless.tools/exponent-calculator/): Free exponent calculator.
- [Factorial Calculator — Free Exact n! Calculator with BigInt Precision](https://serverless.tools/factorial-calculator/): Free online factorial calculator.
- [Fibonacci Sequence Generator — Free Exact BigInt Sequence Calculator](https://serverless.tools/fibonacci-generator/): Free online Fibonacci sequence generator.
- [Fraction Calculator — Free Add, Subtract, Multiply & Divide Fractions](https://serverless.tools/fraction-calculator/): Free online fraction calculator.
- [GCD & LCM Calculator — Greatest Common Divisor & Least Common Multiple](https://serverless.tools/gcd-lcm-calculator/): Free online GCD and LCM calculator.
- [Leap Year Checker — Is It a Leap Year? Fast Calendar Verification](https://serverless.tools/leap-year-checker/): Free online leap year checker.
- [Loan/EMI Calculator — Monthly Payments, Interest & Amortization Schedule](https://serverless.tools/loan-calculator/): Free online loan and EMI calculator.
- [Logarithm Calculator — Free Log Calculator with Any Base (ln, log₁₀, log₂)](https://serverless.tools/logarithm-calculator/): Free online logarithm calculator.
- [Matrix Calculator — Free Online Matrix Operations & Determinant Solver](https://serverless.tools/matrix-calculator/): Free online matrix calculator for 2x2 and 3x3 matrices.
- [Ohm's Law Calculator — Voltage, Current, Resistance & Power Solver](https://serverless.tools/ohms-law-calculator/): Free Ohm's Law calculator to compute voltage, current, resistance, and electrical power with interactive circuit formulas, unit scaling, and instant results.
- [Online Chart Maker — 12 Types, CSV Upload, Multi-Dataset & High-Res Export](https://serverless.tools/chart-maker/): Free online chart maker with CSV upload, 12 chart types (bar, line, pie, radar, scatter, bubble, mixed), multi-dataset support, high-resolution PNG/SVG vector export, and JSON persistence.
- [Paint Calculator — Wall Surface Area, Gallons & Room Project Estimator](https://serverless.tools/paint-calculator/): Free paint calculator to estimate paintable wall area, gallons or liters needed, number of coats, and total project costs with window and door deductions.
- [Percentage Calculator — Instant Multi-Mode Percent & Ratio Solver](https://serverless.tools/percentage-calculator/): Free multi-mode percentage calculator to solve percent of a number, percentage change, markup/discount, parts of a whole, and tip ratios instantly.
- [Permutation & Combination Calculator — Exact nPr & nCr Solver](https://serverless.tools/permutation-combination-calculator/): Free permutation and combination calculator to compute nPr, nCr, permutations with repetition, circular arrangements, and combinations with replacement using exact BigInt precision.
- [Prime Number Checker — Primality Test, Sieve & Factorization Tool](https://serverless.tools/prime-number-checker/): Free prime number checker to test integer primality, generate primes across custom ranges via the Sieve of Eratosthenes, and compute prime factorizations.
- [Probability Calculator — Single, Compound & Conditional Odds Solver](https://serverless.tools/probability-calculator/): Free probability calculator to compute single event odds, union (OR) and intersection (AND) compound events, coin toss, dice roll, and Bayesian conditional probabilities.
- [Pythagorean Theorem Calculator — Exact Hypotenuse, Leg & Angle Solver](https://serverless.tools/pythagorean-theorem-calculator/): Free Pythagorean theorem calculator to solve missing right triangle hypotenuse (c) or legs (a, b), interior angles, area, perimeter, and in-radius with exact steps.
- [Quadratic Formula Calculator — Real & Complex Roots, Discriminant & Vertex Solver](https://serverless.tools/quadratic-formula-calculator/): Free quadratic formula calculator to solve ax² + bx + c = 0 with step-by-step real and complex roots, discriminant analysis (Δ), parabola vertex, and axis of symmetry.
- [Scientific Calculator — Online Advanced Math & Trig Engine](https://serverless.tools/scientific-calculator/): Free advanced scientific calculator online.
- [Square Root Calculator — Exact Radical, Nth Root & Bulk Engine](https://serverless.tools/square-root-calculator/): Free square root calculator online.
- [Standard Deviation Calculator — Sample, Population & Variance](https://serverless.tools/standard-deviation-calculator/): Free standard deviation calculator online.
- [Statistics Calculator — Descriptive, Quartiles, Skewness & Dispersion](https://serverless.tools/statistics-calculator/): Free descriptive statistics calculator online.
- [Triangle Calculator — SSS, SAS, Angles, Area & Perimeter](https://serverless.tools/triangle-calculator/): Free triangle calculator online.

### Converters

- [AAC to MP3 Converter — Bulk 320kbps](https://serverless.tools/aac-to-mp3/): Free, private in-browser AAC to MP3 converter.
- [AVI to GIF Converter — Bulk Animated Maker](https://serverless.tools/avi-to-gif/): Free, private in-browser AVI to GIF converter.
- [AVI to MP3 Converter — Extract Audio in High Quality](https://serverless.tools/avi-to-mp3/): Free, private, serverless AVI to MP3 converter.
- [AVI to MP4 Converter — Universal In-Browser Video Transcoder](https://serverless.tools/avi-to-mp4/): Free, private, serverless AVI to MP4 converter.
- [AVI to WebM Converter — Modern Open Web Video Transcoder](https://serverless.tools/avi-to-webm/): Free, private, serverless AVI to WebM converter.
- [Angle Converter — Degrees, Radians, Gradians & DMS Precision Tool](https://serverless.tools/angle-converter/): Free, private, serverless angle converter.
- [Area Converter — Free Instant Square Meter, Feet, Acre & Hectare Tool](https://serverless.tools/area-converter/): Free, private, serverless area converter.
- [Binary to Text Converter — Free Instant Binary, Hex, Octal & Decimal Tool](https://serverless.tools/binary-text-converter/): Free, private, serverless binary to text converter.
- [Braille Translator — Free Instant Text to Braille Unicode Converter](https://serverless.tools/braille-translator/): Free, private Braille translator.
- [CSV to JSON Converter — Free Instant Tabular to JSON Parser](https://serverless.tools/csv-to-json/): Free, private, serverless CSV to JSON converter.
- [CSV to XML Converter — Free Instant Tabular to XML Generator](https://serverless.tools/csv-to-xml/): Free, private, serverless CSV to XML converter with bulk file support.
- [Color Format Converter — Free Instant HEX, RGB, HSL & CMYK Tool](https://serverless.tools/color-converter/): Free, private, serverless color format converter with batch support.
- [Cooking Measurement Converter — Free Instant Kitchen & Baking Unit Tool](https://serverless.tools/cooking-measurement-converter/): Free, private in-browser cooking measurement converter.
- [Coordinate Converter — Free Instant DMS, Decimal & GPS Location Tool](https://serverless.tools/coordinate-converter/): Free, private in-browser GPS coordinate converter.
- [Data Size Converter — Free Bytes, KB, MB, GB, TB & PB Calculator](https://serverless.tools/data-size-converter/): Free, private in-browser digital storage and data size converter.
- [Data Transfer Rate Converter — Free Mbps, MB/s, Gbps & Speed Calculator](https://serverless.tools/data-transfer-rate-converter/): Free, private in-browser data transfer rate converter.
- [Density Converter — Free kg/m³ g/cm³ lb/ft³ Tool](https://serverless.tools/density-converter/): Free, private, serverless density converter.
- [Electric Current Converter — Free Ampere mA μA kA Tool](https://serverless.tools/electric-current-converter/): Free, private electric current converter.
- [Energy Converter — Free Joules kWh Calories BTU Tool](https://serverless.tools/energy-converter/): Free, private, serverless energy converter.
- [FLAC to MP3 Converter — Free Bulk In-Browser Audio Transcoder](https://serverless.tools/flac-to-mp3/): Free, private, serverless FLAC to MP3 converter.
- [FLV to MP3 Converter — Free In-Browser Video Audio Extractor](https://serverless.tools/flv-to-mp3/): Free, private, serverless FLV to MP3 converter.
- [FLV to MP4 Converter — Free In-Browser Video Transcoder](https://serverless.tools/flv-to-mp4/): Free, private, serverless FLV to MP4 converter.
- [Force Converter — Precision Newton, lbf, kgf, kN, kip Tool](https://serverless.tools/force-converter/): Free, private, serverless precision force converter.
- [Frequency Converter — Free Online Hz, kHz, MHz, GHz & RPM Tool](https://serverless.tools/frequency-converter/): Free, instantaneous, client-side frequency converter.
- [Fuel Consumption Converter — Free Online MPG, L/100km & km/L Tool](https://serverless.tools/fuel-consumption-converter/): Free, accurate, client-side fuel consumption converter.
- [HEIC to PNG Converter — Free Batch iPhone Photo Conversion](https://serverless.tools/heic-to-png-converter/): Free, private, serverless HEIC to PNG converter with bulk support.
- [HTML to Markdown Converter — Smart Client-Side Parser](https://serverless.tools/html-to-markdown/): Free, private, serverless HTML to Markdown converter.
- [ICO Converter — Free Multi-Size Favicon Generator Tool](https://serverless.tools/ico-converter/): Free, private, serverless ICO converter.
- [Image to Base64 Converter — Convert Images to Base64 & Data URI Online](https://serverless.tools/image-to-base64/): Free, private, client-side Image to Base64 converter.
- [JSON to CSV Converter — Bulk NDJSON & Nested Flattening Tool](https://serverless.tools/json-to-csv/): Free, private, serverless JSON to CSV converter with bulk NDJSON support and nested object flattening.
- [JSON to XML Converter — Free Bulk JSON to XML Tool](https://serverless.tools/json-to-xml/): Free, private, serverless JSON to XML converter with bulk support.
- [JSON to YAML Converter — Free Bulk JSON to YAML Tool](https://serverless.tools/json-to-yaml/): Free, private, serverless JSON to YAML converter with bulk support.
- [Length Converter — Free Distance Unit Converter Online](https://serverless.tools/length-converter/): Free, private, serverless length converter.
- [MKV to AVI Converter — Free Bulk In-Browser Video Converter](https://serverless.tools/mkv-to-avi/): Free, private, serverless MKV to AVI converter with bulk batch support.
- [MKV to GIF Converter — Free Bulk In-Browser Video to GIF Tool](https://serverless.tools/mkv-to-gif/): Free, private, serverless MKV to GIF converter with bulk batch support.
- [MKV to MP3 Converter — Free Bulk In-Browser Audio Extractor](https://serverless.tools/mkv-to-mp3/): Free, private, serverless MKV to MP3 converter with bulk batch support.
- [MKV to MP4 Converter — Free Bulk In-Browser Video Converter](https://serverless.tools/mkv-to-mp4/): Free, private, serverless MKV to MP4 converter with bulk batch support.
- [MKV to WebM Converter — Free Bulk In-Browser Video Converter](https://serverless.tools/mkv-to-webm/): Free, private, serverless MKV to WebM converter.
- [MOV to AVI Converter — Free Bulk In-Browser Video Converter](https://serverless.tools/mov-to-avi/): Free, private, serverless MOV to AVI converter.
- [MOV to GIF Converter — Free Bulk In-Browser Video to GIF Converter](https://serverless.tools/mov-to-gif/): Free, private, serverless MOV to GIF converter.
- [MOV to MP3 Converter — Free Bulk In-Browser Audio Extractor](https://serverless.tools/mov-to-mp3/): Free, private, serverless MOV to MP3 converter.
- [MOV to MP4 Converter — Free Bulk In-Browser Video Converter](https://serverless.tools/mov-to-mp4/): Free, private, serverless MOV to MP4 converter.
- [MOV to WebM Converter — Free Bulk In-Browser Video Converter](https://serverless.tools/mov-to-webm/): Free, private, serverless MOV to WebM converter.
- [MP3 to OGG Converter — Bulk Audio Transcoding](https://serverless.tools/mp3-to-ogg/): Convert MP3 to OGG Vorbis online for free with instant client-side processing.
- [MP3 to WAV Converter — Free Bulk Client-Side Audio Conversion](https://serverless.tools/mp3-to-wav/): Convert MP3 to uncompressed WAV online for free.
- [MP4 to AVI Converter — Client-Side Video Transcoding](https://serverless.tools/mp4-to-avi/): Convert MP4 video files to AVI format directly inside your browser.
- [MP4 to GIF Converter — Free & Private In-Browser Animated GIF Maker](https://serverless.tools/mp4-to-gif/): Convert MP4 videos to animated GIF images instantly in your browser.
- [MP4 to MKV Converter — Client-Side Video Transcoding & Remuxing](https://serverless.tools/mp4-to-mkv/): Convert MP4 videos to MKV format directly in your browser.
- [MP4 to MOV Converter — Client-Side QuickTime Video Transcoding](https://serverless.tools/mp4-to-mov/): Convert MP4 videos to Apple QuickTime MOV format directly inside your browser.
- [MP4 to MP3 Converter — Client-Side Audio Extraction & Transcoding](https://serverless.tools/mp4-to-mp3/): Extract high-quality MP3 audio from MP4 videos directly inside your browser.
- [MP4 to WAV Converter — Uncompressed Studio Audio Extraction](https://serverless.tools/mp4-to-wav/): Extract uncompressed studio-quality WAV audio from MP4 videos directly inside your browser.
- [MP4 to WebM Converter — Client-Side Open Web Video Transcoding](https://serverless.tools/mp4-to-webm/): Convert MP4 video files to WebM format directly inside your browser.
- [Markdown to HTML Converter — Real-Time Client-Side Parsing](https://serverless.tools/markdown-to-html/): Convert Markdown text into clean, semantic HTML markup directly inside your browser.
- [Measurement Converter — Multi-Unit Engineering & Scientific Conversion](https://serverless.tools/measurement-converter/): Convert measurements across 8 categories and 50+ units directly in your browser.
- [Morse Code Translator — Free Text to Morse Converter](https://serverless.tools/morse-code-translator/): Convert text to Morse code and decode Morse signals into plain text instantly.
- [Number Base Converter — Radix Calculator (2 to 36)](https://serverless.tools/number-base-converter/): Convert numbers between binary, octal, decimal, hexadecimal, and custom bases (2-36) instantly.
- [OGG to MP3 Converter — Bulk Audio Transcoding](https://serverless.tools/ogg-to-mp3/): Convert OGG audio files to MP3 format online with bulk processing for up to 20 files.
- [PDF Image Converter — Bidirectional PDF to Image & Image to PDF Tool](https://serverless.tools/pdf-image-converter/): Convert images (JPG, PNG, WebP) to PDF documents or extract PDF pages as high-resolution images.
- [PDF to Word Converter — Bulk DOCX Reconstruction](https://serverless.tools/pdf-to-word/): Convert PDF documents to editable Microsoft Word DOCX files with preserved headings, typographic hierarchy, and paragraph layout.
- [PNG to WebP Converter — Bulk Image Compression & Optimization](https://serverless.tools/png-to-webp-converter/): Convert PNG, JPG, and BMP images to modern WebP format online with bulk processing.
- [Power Converter — Dynamic Multi-Unit Engineering Calculator](https://serverless.tools/power-converter/): Convert power across watts (W), kilowatts (kW), megawatts (MW), mechanical horsepower (hp), metric horsepower (PS), and BTU/hr.
- [Pressure Converter — Dynamic Engineering & Barometric Calculator](https://serverless.tools/pressure-converter/): Convert pressure between Pascal (Pa), Kilopascal (kPa), Megapascal (MPa), Bar, PSI, Standard Atmospheres (atm), and mmHg (Torr).
- [Roman Numeral Converter — Bidirectional Roman & Arabic Numeral Calculator](https://serverless.tools/roman-numeral-converter/): Convert numbers between Arabic integers (1–3,999) and classical Roman numerals instantly.
- [SVG to PNG Converter — High-Resolution Vector to Raster Rendering Tool](https://serverless.tools/svg-to-png-converter/): Convert SVG vector files to crisp high-resolution PNG images directly in your browser.
- [Speed Converter — Precision Velocity & Airspeed Unit Calculator](https://serverless.tools/speed-converter/): Convert velocity and speed units instantly across km/h, mph, m/s, knots, Mach, ft/s, cm/s, and the speed of light.
- [TIFF to PNG Converter — High-Resolution TIF to Lossless PNG Tool](https://serverless.tools/tiff-to-png-converter/): Convert TIFF and TIF images to lossless, web-ready PNG format directly in your browser.
- [Temperature Converter — Precision Thermal Scale & Formula Calculator](https://serverless.tools/temperature-converter/): Convert temperatures instantly between Celsius, Fahrenheit, Kelvin, Rankine, and Réaumur.
- [Text to Hex Converter — Free Online ASCII & UTF-8 Hexadecimal Tool](https://serverless.tools/text-to-hex-converter/): Convert plain text to hexadecimal and decode hex strings to text online.
- [Time Converter — Free Online Duration & Time Unit Conversion Tool](https://serverless.tools/time-converter/): Free, private online time converter.
- [Torque Converter — Free Online N·m ft·lbf kgf·m Unit Conversion Tool](https://serverless.tools/torque-converter/): Free, private online torque converter.
- [Unit Converter — Free All-in-One Multi-Category Measurement Tool](https://serverless.tools/unit-converter/): Free, private all-in-one unit converter.
- [Voltage Converter — Free Online Volts mV kV Unit Conversion Tool](https://serverless.tools/voltage-converter/): Free, private online voltage converter.
- [Volume Converter — Free Online Liters Gallons Cups Capacity Tool](https://serverless.tools/volume-converter/): Free, private online volume converter.
- [WAV to MP3 Converter — Free Bulk In-Browser Audio Conversion](https://serverless.tools/wav-to-mp3/): Free, private online WAV to MP3 converter.
- [WAV to OGG Converter — Free Bulk In-Browser Audio Conversion](https://serverless.tools/wav-to-ogg/): Convert uncompressed WAV audio files to high-performance OGG Vorbis online for free.
- [WebM to AVI Converter — Free Bulk In-Browser Video Conversion](https://serverless.tools/webm-to-avi/): Convert modern WebM videos (VP8/VP9) to widely compatible AVI format online for free.
- [WebM to GIF Converter — Free Bulk In-Browser Video to GIF Conversion](https://serverless.tools/webm-to-gif/): Convert modern WebM videos (VP8/VP9) to lightweight animated GIF images online for free.
- [WebM to MP3 Converter — Free Bulk In-Browser Audio Extraction](https://serverless.tools/webm-to-mp3/): Extract pristine MP3 audio from WebM videos online for free.
- [WebM to MP4 Converter — Free Bulk In-Browser Video Conversion](https://serverless.tools/webm-to-mp4/): Convert modern WebM videos (VP8/VP9) to universally compatible MP4 (H.264/AAC) online for free.
- [WebP to PNG Converter — Free Bulk In-Browser Image Conversion](https://serverless.tools/webp-to-png-converter/): Free, private WebP to PNG converter.
- [Weight Converter — Free Mass Unit Converter Online](https://serverless.tools/weight-converter/): Free, private, serverless weight converter.
- [XML to CSV Converter — Free Online Bulk XML Parser](https://serverless.tools/xml-to-csv/): Free, private, serverless XML to CSV converter with bulk support.
- [YAML to JSON Converter — Free Bulk YAML Parser Online](https://serverless.tools/yaml-to-json/): Free, private, serverless YAML to JSON converter with bulk support.

### Security & Encryption

- [API Key Generator — Cryptographically Secure Secret Key & Token Creator](https://serverless.tools/api-key-generator/): Free, private client-side API key generator.
- [Air-Gapped 2FA/TOTP Key & QR Studio — RFC 6238 Generator](https://serverless.tools/totp-authenticator-studio/): Free, private, serverless in-browser 2FA/TOTP key generator and QR code studio.
- [Air-Gapped WireGuard Keypair & Config Studio — Zero-Knowledge VPN Generator](https://serverless.tools/wireguard-config-generator/): Free, private, air-gapped WireGuard keypair and configuration generator.
- [Bcrypt Generator — Hash & Verify Passwords with Salt Rounds](https://serverless.tools/bcrypt-generator/): Free, private client-side bcrypt generator.
- [CSP (Content Security Policy) & Nonce Studio](https://serverless.tools/csp-generator/): Free, private, serverless CSP (Content Security Policy) & Nonce Studio.
- [DNS Records Studio (SPF, DKIM, DMARC & BIND)](https://serverless.tools/dns-record-generator/): Free, private, in-browser DNS Records Studio.
- [Encryption & Decryption Tool — Multi-Algorithm AES-GCM, Base64, ROT13 & XOR](https://serverless.tools/encryption-tool/): Free, private client-side encryption and decryption tool.
- [Online Hash Generator — SHA-256, SHA-512, SHA-384, SHA-1 & MD5 Checksums](https://serverless.tools/hash-generator/): Generate cryptographic hashes instantly in your browser.
- [Online Password Generator — Secure CSPRNG Random Passwords & Passphrases](https://serverless.tools/password-generator/): Generate strong, cryptographically secure random passwords instantly.
- [PEM / X.509 & CSR Certificate Inspector](https://serverless.tools/certificate-inspector/): Free, private, serverless PEM / X.509 & CSR Certificate Inspector.
- [Password Strength Checker — Instant Entropy, Security Score & Crack Time Analyzer](https://serverless.tools/password-strength-checker/): Test password strength in your browser.
- [Subdomain Takeover & Dangling DNS Analyzer — 50+ Cloud Fingerprints](https://serverless.tools/subdomain-takeover-analyzer/): Free, private, serverless in-browser subdomain takeover scanner and dangling DNS analyzer.
- [WebPCAP — In-Browser Packet Inspector](https://serverless.tools/pcap-viewer/): Free, private, in-browser PCAP packet inspector.
- [Zero-Trust Document Redactor — Client-Side PII Masking & Privacy Shield](https://serverless.tools/document-redactor/): Automated document redaction running 100% in your browser.

### SEO Tools

- [Meta Tag Generator — Complete HTML, Open Graph & Twitter Cards SEO Builder](https://serverless.tools/meta-tag-generator/): Free online meta tag generator for SEO and social media optimization.
- [Open Graph Preview — Social Media Card Tester & Meta Tag Simulator](https://serverless.tools/open-graph-preview/): Free online Open Graph preview and social snippet simulator.
- [Privacy Policy Generator — GDPR, CCPA & Global Compliance Builder](https://serverless.tools/privacy-policy-generator/): Free online privacy policy generator for websites, SaaS applications, and mobile apps.
- [Sitemap XML Generator — XML & Image Sitemap Protocol Builder](https://serverless.tools/sitemap-generator/): Free online XML sitemap generator for SEO and search engine indexing.
- [robots.txt Generator — Robots Exclusion Protocol & AI Bot Control Builder](https://serverless.tools/robots-generator/): Free online robots.txt generator for SEO and crawler governance.

### Audio Tools

- [AI Audio Enhancer — Boost Clarity, Normalize & Equalize Sound](https://serverless.tools/ai-audio-enhancer/): Free online AI audio enhancer and voice clarifier.
- [AI Audio Noise Remover — Free In-Browser Background Noise Cleaner](https://serverless.tools/ai-noise-remover/): Free online AI audio noise remover and voice cleaner.
- [AI Vocal Remover & Stem Splitter — Free In-Browser Acapella & Karaoke Maker](https://serverless.tools/vocal-remover/): Free online AI vocal remover and stem splitter.
- [AI Voice Changer & Vocal Pitch Shifter — Free In-Browser Gender Swap & Audio Effects](https://serverless.tools/ai-voice-changer/): Free online AI voice changer and vocal pitch shifter.
- [Audio BPM, Musical Key & Beat Grid Studio — In-Browser DJ MIR Engine](https://serverless.tools/bpm-key-detector/): Free, private, serverless in-browser audio BPM, musical key and beat grid studio.
- [Audio Trimmer & Song Cutter — Free In-Browser Lossless Audio Clipper & Ringtone Maker](https://serverless.tools/audio-trimmer/): Free online audio trimmer and sound cutter.
- [Audio Visualizer & Spectrum Analyzer — Free Real-Time In-Browser Sound Display](https://serverless.tools/audio-visualizer/): Free real-time audio visualizer and sound spectrum analyzer.
- [Audio Waveform Generator — Free In-Browser High-Res Sound Wave Image Maker](https://serverless.tools/audio-waveform/): Free online audio waveform generator.
- [Chord Progression & Circle of Fifths Studio — Interactive MIDI Generator](https://serverless.tools/chord-progression-generator/): Free, private, serverless in-browser chord progression generator and interactive Circle of Fifths.
- [Continuous Noise & Tinnitus Notch Masker — In-Browser Sound Therapy](https://serverless.tools/therapeutic-noise-generator/): Free, private, serverless in-browser therapeutic noise generator and tinnitus notch sound therapy.
- [Fake Lossless & Audio Cutoff Inspector — In-Browser FFT Spectrogram](https://serverless.tools/audio-bitrate-spectrum/): Free, private, serverless in-browser fake lossless inspector and audio spectrum analyzer.
- [Podcast Dead-Air & Smart Silence Remover — In-Browser Voice Truncator](https://serverless.tools/podcast-silence-remover/): Free, private, serverless in-browser podcast silence remover.
- [Retro Game Sound Generator — Free In-Browser 8-Bit Chiptune SFX Maker](https://serverless.tools/retro-sound-generator/): Free online retro game sound generator and 8-bit chiptune SFX maker.
- [Studio Room Mode & Standing Waves Calculator — In-Browser Acoustics](https://serverless.tools/room-mode-calculator/): Free, private, serverless in-browser studio room mode and standing waves calculator.

### Video Tools

- [AI Video Face Redactor — Local Bulk Face Blur & Anonymization](https://serverless.tools/video-face-redactor/): Free local AI video face redactor with bulk batch processing.
- [Dual Subtitle Studio & Bilingual Merger — Synchronize & Combine Captions](https://serverless.tools/dual-subtitle-merger/): Free, private, serverless in-browser dual subtitle merger studio.
- [In-Browser 3D .cube LUT Studio & Grader — Real-Time Video & Photo Colorist](https://serverless.tools/cube-lut-studio/): Free, private, serverless in-browser 3D .cube LUT studio and video color grader.
- [In-Browser WebGL Chroma Key & Green Screen Studio — Real-Time Background Isolator](https://serverless.tools/chroma-key-studio/): Free, private, serverless in-browser WebGL chroma key and green screen video studio.
- [Lossless Video Audio Pitch & Formant Shifter — Sync-Preserved In-Browser DSP](https://serverless.tools/video-pitch-shifter/): Free, private, serverless in-browser video audio pitch and formant shifter.
- [Podcast Audiogram & Waveform Video Studio — Animated Social Audio Clips](https://serverless.tools/podcast-audiogram-maker/): Free, private, serverless in-browser podcast audiogram and waveform video maker.
- [Screen & Audio Recorder Studio — Free Online Screen Video Capture](https://serverless.tools/screen-recorder/): Free, private, serverless screen recorder studio.
- [Split-Screen Video Grid & Compare Studio — Side-by-Side & PiP Video Compositor](https://serverless.tools/split-screen-video/): Free, private, serverless in-browser split-screen video grid and compare studio.
- [Subtitle Editor & Sync Studio — Free Online SRT & WebVTT Captions Editor](https://serverless.tools/subtitle-editor/): Free, private, serverless subtitle editor and synchronizer studio.
- [Subtitle FPS & Drift Resynchronizer — Fix Desynced SRT, VTT & ASS Subtitles](https://serverless.tools/subtitle-drift-fixer/): Free, private, serverless in-browser subtitle FPS and drift resynchronizer.
- [TikTok, Reels & Shorts Safe-Zone Cockpit — Short-Form UI Overlay & Reframer](https://serverless.tools/video-safe-zone-studio/): Free, private, serverless in-browser TikTok, Reels, and Shorts safe-zone cockpit.
- [Video Converter — Bulk Online Media Transcoder & Audio Extractor](https://serverless.tools/video-converter/): Free, private, serverless online video converter with bulk processing.
- [Video Subtitles Hardsub Burner Studio — Permanent Captions Embedder](https://serverless.tools/subtitles-hardsub-burner/): Free, private, serverless in-browser video subtitles hardsub burner studio.

### Social Media Tools

- [Twitter/X Character Counter — Real-Time Tweet Analyzer & Thread Planner](https://serverless.tools/twitter-character-counter/): Free online Twitter and X character counter with real-time 280-character limit tracking.
- [WhatsApp Status Video Maker — Animated Text, Audio & Story Creator](https://serverless.tools/whatsapp-status-video-maker/): Free online WhatsApp status video maker and vertical story generator.

### Finance & Business

- [Accounting Period Calculator — Fiscal Quarter, Month & Period Tool](https://serverless.tools/accounting-period-calculator/): Free accounting period calculator to determine fiscal year, quarter, and accounting period for any date with key financial closing deadlines — 100% client-side, 100% serverless.
- [Age of Receivables Calculator - Free Aging Analysis Tool](https://serverless.tools/age-of-receivables/): Free age of receivables calculator and serverless aging analysis tool.
- [Amortization Calculator - Free Loan Payment Schedule Tool](https://serverless.tools/amortization-calculator/): Free amortization calculator and serverless loan payment schedule tool.
- [Bill Splitter - Free Tip, Tax, and Per-Person Calculator](https://serverless.tools/bill-splitter/): Free bill splitter calculator and serverless restaurant check divider.
- [Billable Hours Calculator - Free Time Tracking & Billing Tool](https://serverless.tools/billable-hours-calculator/): Free billable hours calculator and serverless time tracking tool.
- [Break-Even Calculator — Free Business & Margin Analysis](https://serverless.tools/break-even-calculator/): Free serverless break-even calculator with contribution margin analysis and profit/loss simulation.
- [Budget Planner — Free Monthly Income & Expense Tracker](https://serverless.tools/budget-planner/): Free serverless budget planner with visual category charts, 12 currencies, CSV export, and persistent localStorage.
- [CSV to Ledger Converter — Free Bank Statement to Journal Entry Parser](https://serverless.tools/csv-to-ledger/): Free serverless CSV to ledger converter.
- [Cash Flow Forecaster — Free Multi-Month Cash Projection Tool](https://serverless.tools/cash-flow-forecaster/): Free serverless cash flow forecaster with compound growth rates, visual trajectory charts, deficit alerts, and CSV export.
- [Check Writer — Free Number to Words Legal Converter for Checks](https://serverless.tools/check-writer/): Free serverless check writer and number to words legal converter.
- [Compound Interest Calculator — Free Investment Growth & Future Value Tool](https://serverless.tools/compound-interest-calculator/): Free serverless compound interest calculator with regular monthly contributions, interactive growth chart, and year-by-year schedule.
- [Contract Risk Scanner & NDA Trap Detector — Freelance & Client Agreement Audit Studio](https://serverless.tools/contract-risk-scanner/): Free, private, serverless contract risk scanner and NDA trap detector.
- [Currency Exchange Calculator — Free Converter Tool](https://serverless.tools/currency-exchange-calculator/): Free currency exchange calculator with 16+ currencies, bank fee deduction, and inverse rates.
- [Depreciation Calculator — Free Asset Depreciation Tool](https://serverless.tools/depreciation-calculator/): Free asset depreciation calculator supporting Straight-Line, Declining Balance, Sum-of-Years-Digits, and MACRS methods.
- [E-Commerce Multi-Platform Profit Matrix & Fee Calculator — Amazon FBA, eBay, Etsy, Shopify & TikTok Shop](https://serverless.tools/ecommerce-fee-comparator/): Free, private, serverless multi-platform e-commerce profit matrix and marketplace fee calculator.
- [Expense Tracker — Free Personal Expense Categorizer & Budget Visualizer](https://serverless.tools/expense-tracker/): Free serverless expense tracker and budget categorizer.
- [FIRE Simulator & Early Retirement Calculator — Lean, Fat, Coast & Barista FIRE Studio](https://serverless.tools/fire-calculator/): Free, private, serverless FIRE calculator and early retirement simulator.
- [Financial Ratio Calculator — Free Liquidity, Profitability & Solvency Analysis Tool](https://serverless.tools/financial-ratio-calculator/): Free serverless financial ratio calculator.
- [Fiscal Year Converter - Free FY to Calendar Date Tool](https://serverless.tools/fiscal-year-converter/): Free fiscal year converter and calendar date tool.
- [Freelance Hourly Rate & Pricing Matrix Calculator — Billable Target & Project Fee Studio](https://serverless.tools/freelance-rate-calculator/): Free, private, serverless freelance hourly rate and project pricing matrix calculator.
- [Fuel Cost Calculator — Free Trip Gas Cost Estimator](https://serverless.tools/fuel-cost-calculator/): Free fuel cost calculator for trip gas planning.
- [IBAN Validator & Formatter — Bulk IBAN Verification](https://serverless.tools/iban-validator/): Free IBAN validator and formatter with bulk verification support.
- [Inflation Calculator & Purchasing Power Tool — Past & Future](https://serverless.tools/inflation-calculator/): Free inflation calculator and purchasing power tool.
- [Markup Calculator — Free Markup & Margin Pricing Tool](https://serverless.tools/markup-calculator/): Free markup and margin calculator.
- [Mortgage Calculator — Free Home Loan Payment Tool](https://serverless.tools/mortgage-calculator/): Free mortgage calculator with amortization schedule, property tax, and insurance.
- [Payroll Tax Calculator — Free Salary Tax & Deduction Estimator](https://serverless.tools/payroll-tax-calculator/): Free payroll tax calculator and salary tax estimator.
- [Percentage Change Calculator - Free Serverless % Increase/Decrease Tool](https://serverless.tools/percentage-change-calculator/): Free serverless percentage change calculator online.
- [Profit Margin Calculator - Free Serverless Revenue, Margin & Markup Tool](https://serverless.tools/profit-margin-calculator/): Free profit margin calculator.
- [ROI Calculator - Free Serverless Return on Investment & Annualized CAGR Tool](https://serverless.tools/roi-calculator/): Free ROI calculator.
- [Rental Yield & Cap Rate Calculator — Real Estate Investment ROI & Cash Flow Studio](https://serverless.tools/rental-yield-calculator/): Free, private, serverless real estate rental yield and cap rate calculator.
- [Retirement Calculator - Free Serverless Savings & 401(k) Projector](https://serverless.tools/retirement-calculator/): Free retirement calculator with savings projection, 4% rule income, inflation adjustment, and growth chart.
- [Salary Calculator — Take-Home Pay & Paycheck Tax Estimator](https://serverless.tools/salary-calculator/): Free salary calculator to estimate take-home pay across weekly, bi-weekly, semi-monthly, and monthly paychecks.
- [Savings Goal Calculator — Target Date & Monthly Savings Planner](https://serverless.tools/savings-goal-calculator/): Free savings goal calculator to determine exact months to reach your financial target with compound interest.
- [Tax Calculator — Progressive Federal Income Tax & Bracket Estimator](https://serverless.tools/tax-calculator/): Free federal income tax calculator with progressive brackets, effective rate, and filing status breakdown.
- [Tip Calculator — Restaurant Bill Splitter & Gratuity Planner](https://serverless.tools/tip-calculator/): Free tip calculator to compute exact gratuity, total dining bill, and per-person split amounts.
- [VAT / Sales Tax Calculator — Free In-Browser Tax Calculation Tool](https://serverless.tools/vat-sales-tax-calculator/): Free serverless VAT and sales tax calculator — add or remove tax instantly, compute gross and net amounts, and batch-calculate multiple invoice items.
- [Working Capital Calculator — Free Corporate Liquidity Analysis Tool](https://serverless.tools/working-capital-calculator/): Free serverless working capital calculator — compute net working capital, current ratio, quick ratio, and cash ratio instantly.

### Education & Learning

- [Academic Citation & Bibliography Studio — APA 7th, MLA 9th, Chicago & BibTeX](https://serverless.tools/citation-generator/): Free, private, serverless in-browser academic citation generator and bibliography studio for APA 7th, MLA 9th, Chicago, Harvard, IEEE, and BibTeX with automated DOI/ISBN lookup.
- [Cornell Notes Studio & Printable PDF Maker — 3-Section Note System](https://serverless.tools/cornell-notes-generator/): Free, private, serverless in-browser Cornell notes generator and printable PDF maker with 3-section layout, active recall study mode, and customizable paper grids.
- [GPA Calculator Studio — Credit-Weighted 4.0 College Grade Point Average](https://serverless.tools/gpa-calculator/): Free, private, in-browser collegiate GPA calculator on standard 4.0 scale.

### Design & Creative

- [ASCII Art Generator — Free Online Image to ASCII Converter & Text Banner Maker](https://serverless.tools/ascii-art-generator/): Convert images to ASCII art and create retro text banners online.
- [Avatar Generator — Free Online Unique Profile Picture & Icon Maker](https://serverless.tools/avatar-generator/): Generate unique, deterministic avatars and profile pictures online.
- [Background Pattern Generator — Free Online Seamless CSS & SVG Pattern Maker](https://serverless.tools/background-pattern-generator/): Create beautiful seamless SVG and CSS background patterns online.
- [Business Card Maker — Free Online Card Designer with Templates](https://serverless.tools/business-card-maker/): Design and download professional business cards online.
- [CSS Gradient Generator — Free Online Visual Gradient Maker & CSS Code Builder](https://serverless.tools/gradient-generator/): Create beautiful linear, radial, and conic CSS gradients online.
- [Color Blindness Simulator — Free Online Color Vision Deficiency Test & WCAG Accessibility Tool](https://serverless.tools/color-blindness-simulator/): Test images and designs for color blindness online free.
- [Color Name Finder — Identify CSS Named Colors, HEX & RGB Codes Online Free](https://serverless.tools/color-name-finder/): Identify CSS named colors from any HEX, RGB, or visual picker input online free.
- [Color Scheme Generator — Harmonious Palette Creator & CSS Tokens Builder](https://serverless.tools/color-scheme-generator/): Create harmonious color palettes online free based on color theory.
- [Font Pairing Generator — Free Online Typography Tool & CSS Font Matcher](https://serverless.tools/font-pairing-generator/): Discover perfect font pairings online free.
- [Glitch Art Generator — Free Online Image Glitch Effect Tool](https://serverless.tools/glitch-art-generator/): Transform any photo into stunning digital glitch art directly in your browser.
- [Meme Generator — Free Online Custom Meme Maker with No Watermark](https://serverless.tools/meme-generator/): Create hilarious, viral custom memes instantly in your browser with zero watermarks.
- [Noise Texture Generator — Procedural Perlin, Simplex & Film Grain Textures](https://serverless.tools/noise-texture-generator/): Generate high-resolution procedural noise textures directly in your browser.
- [Pixel Art Editor — Free Online Retro Sprite & Game Art Maker](https://serverless.tools/pixel-art-editor/): Create authentic 8-bit and 16-bit retro pixel art and game sprites directly in your browser.
- [Random Color Generator — Instant Palettes, HEX, RGB & HSL Codes](https://serverless.tools/random-color-generator/): Generate vibrant, cryptographically random color palettes instantly in your browser.
- [SVG Editor & Icon Maker — Free Online Vector Drawing Tool](https://serverless.tools/svg-editor/): Draw, style, and edit vector graphics and SVG icons directly in your browser.
- [SVG Wave Generator — Create Custom Wave Shapes & Section Dividers](https://serverless.tools/svg-wave-generator/): Generate smooth, responsive SVG wave shapes and organic section dividers for modern web pages.
- [Screenshot Beautifier — Free Online Screenshot Mockup Maker](https://serverless.tools/screenshot-beautifier/): Transform plain screenshots into beautiful mockups with gradient backgrounds, macOS browser frames, iPhone and MacBook bezels, drop shadows, and 3x retina PNG export — 100% client-side with zero server uploads.
- [Signature Generator — Free Online Signature Maker & Digital Signer](https://serverless.tools/signature-generator/): Create professional digital signatures online for free.
- [Typography Font Tester — Free Online Font Preview & Compare Tool](https://serverless.tools/font-tester/): Preview and compare 70 Google Fonts in real time with custom text, 8 font weights, letter spacing, line height sliders, and instant CSS export — 100% in-browser typography playground.

### Writing & Content

- [Headline Analyzer — Score, Optimize & Preview Titles Online](https://serverless.tools/headline-analyzer/): Free, private headline analyzer.
- [Readability Score Analyzer — Flesch-Kincaid, SMOG & Fog Metrics Online](https://serverless.tools/readability-analyzer/): Free, private readability score analyzer.
- [Text Diff Viewer — Side-by-Side Visual Comparison & Patch Tool](https://serverless.tools/text-diff-viewer/): Free, private, serverless text diff viewer.

### Data & Analytics

- [CSV Delimiter, Encoding & Dialect Normalizer — Fix Mojibake & Excel BOM](https://serverless.tools/csv-dialect-fixer/): Free, private, serverless in-browser CSV dialect normalizer and delimiter converter.
- [Fake Data Generator — Bulk Test Data](https://serverless.tools/fake-data-generator/): Free, private, serverless fake data generator with bulk support.
- [JSON Viewer — Interactive Tree Explorer & Formatter](https://serverless.tools/json-viewer/): Free, private, serverless JSON viewer.
- [Parquet & DuckDB In-Browser SQL Studio — Client-Side Columnar Explorer](https://serverless.tools/parquet-viewer/): Free, private, in-browser Apache Parquet file viewer and SQL query studio.
- [SQLite Viewer & SQL Query Studio — In-Browser Database Explorer](https://serverless.tools/sqlite-viewer/): Free, private, serverless SQLite viewer and SQL query studio.

### Productivity

- [AI Posture Coach — Real-Time Ergonomic Posture Monitor & Focus Timer](https://serverless.tools/posture-coach/): Free, private, serverless AI posture coach.
- [Countdown Timer — Visual Stopwatch, Interval Ring & Custom Presets](https://serverless.tools/countdown-timer/): Free, private, serverless countdown timer with animated progress ring, productivity presets, audio chime, and browser notifications — 100% in-browser.
- [Decision Matrix Tool — Weighted Scoring Pugh Matrix & Multi-Criteria Analysis](https://serverless.tools/decision-matrix/): Free, private, serverless decision matrix tool.
- [Digital Whiteboard — Infinite Canvas Drawing, Sticky Notes & Vector Export](https://serverless.tools/digital-whiteboard/): Free, private, serverless digital whiteboard with infinite canvas.
- [Email Signature Generator — Professional HTML Signatures & Social Links](https://serverless.tools/email-signature-generator/): Free, private, serverless email signature generator.
- [Flashcard Maker — Excel, CSV & Text to Flashcards](https://serverless.tools/flashcard-maker/): Free, private, serverless flashcard maker.
- [Gantt Chart Maker — Interactive Project Timeline & Milestone Scheduler](https://serverless.tools/gantt-chart-maker/): Free, private, serverless Gantt chart maker.
- [Habit Tracker — Daily Habit Streaks, Calendar Heatmap & Analytics](https://serverless.tools/habit-tracker/): Free, private, serverless daily habit tracker with streaks, calendar heatmaps, completion analytics, and JSON backup — 100% in-browser.
- [Kanban Board — Agile Visual Task & Sprint Workflow Manager](https://serverless.tools/kanban-board/): Free, private, serverless Kanban board with drag-and-drop task management.
- [Mind Map Maker — Visual Brainstorming & Idea Organizer](https://serverless.tools/mind-map-maker/): Free, private, serverless mind map maker.
- [Online Studio Teleprompter & Speech Tracker — Mirror & Voice Sync Prompter](https://serverless.tools/studio-teleprompter/): Free, private, serverless in-browser online studio teleprompter with beam-splitter mirror flip, speech-follow voice sync, dual-monitor screen, and customizable pacing.
- [PDF Editor — View, Annotate, Sign & Edit PDFs In-Browser](https://serverless.tools/pdf-editor/): Free, private, serverless PDF editor.
- [Resume Builder — Free Professional CV Creator & ATS-Friendly Designer](https://serverless.tools/resume-builder/): Free, private client-side resume builder with 6 professional ATS-friendly templates.
- [Scrum Sprint Burndown & Velocity Studio — Agile Linear Forecast & Story Points Tracker](https://serverless.tools/scrum-burndown-chart/): Free, private, serverless Scrum burndown chart & velocity studio.
- [Spreadsheet Editor — Free Online Browser Spreadsheet with Formulas & CSV](https://serverless.tools/spreadsheet-editor/): Free, private, in-browser spreadsheet editor with arithmetic formulas (SUM, AVG, COUNT, MIN, MAX), real-time cell reactivity, CSV import/export, and zero cloud uploads.
- [Stopwatch — Precision Millisecond Lap Timer & Split-Time Counter](https://serverless.tools/stopwatch/): Free, private high-precision online stopwatch with centisecond accuracy, split-lap recording, best/worst time statistics, and zero cloud tracking.
- [Timezone Converter — Free Live & Custom UTC Date Time Converter](https://serverless.tools/timezone-converter/): Free, private client-side timezone converter.
- [Timezone Meeting Planner — Find Overlapping Work Hours for Global Teams](https://serverless.tools/timezone-meeting-planner/): Free, private multi-timezone meeting planner.
- [WebHID Gamepad Drift & Precision Cockpit — Controller Calibration & Polling Analyzer](https://serverless.tools/gamepad-drift-studio/): Free, private, serverless Gamepad drift tester & precision cockpit.
- [WhatsApp Chat to Court & Legal PDF Studio — Evidence Generator](https://serverless.tools/whatsapp-chat-viewer/): Free, private, serverless in-browser WhatsApp chat to court-admissible legal PDF converter.

### Health & Fitness

- [BMI Calculator — Free Body Mass Index & Healthy Weight Tool](https://serverless.tools/bmi-calculator/): Free serverless BMI calculator — calculate your Body Mass Index with metric or imperial units instantly.
- [Body Fat Calculator — Free US Navy Method Percentage Tool](https://serverless.tools/body-fat-calculator/): Free serverless body fat calculator using the validated US Navy circumference method.
- [Calorie Calculator — Free TDEE, BMR & Daily Calorie Deficit Tool](https://serverless.tools/calorie-calculator/): Free calorie calculator to find your exact BMR, TDEE, and daily caloric deficit or surplus for fat loss, muscle gain, or maintenance.
- [Heart Rate Zone Calculator — Free Karvonen Target Heart Rate Training Zones](https://serverless.tools/heart-rate-zone-calculator/): Free heart rate zone calculator using the Karvonen formula and Heart Rate Reserve (HRR).
- [Ideal Weight Calculator — Free Clinical Formula & Healthy BMI Range Tool](https://serverless.tools/ideal-weight-calculator/): Free ideal weight calculator comparing Devine, Robinson, Miller, and Hamwi formulas with WHO healthy BMI ranges.
- [Macro Calculator — Free Flexible Dieting & Macronutrient Gram Split Tool](https://serverless.tools/macro-calculator/): Free macro calculator to calculate exact daily grams of protein, carbohydrates, and healthy fats based on caloric targets and fitness goals.
- [Pace Calculator — Free Running, Cycling & Race Split Time Tool](https://serverless.tools/pace-calculator/): Free pace calculator for runners and cyclists.
- [Sleep Cycle Calculator — Free Bedtime & Wake Up Time Tool](https://serverless.tools/sleep-cycle-calculator/): Free sleep cycle calculator based on 90-minute REM sleep cycles.
- [Water Intake Calculator — Daily Hydration Formula](https://serverless.tools/water-intake-calculator/): Free online water intake calculator.

### Other

- [Audio Merger & Joiner — Combine Music, Podcasts & Sound Clips](https://serverless.tools/audio-merger-joiner/): Free audio merger and joiner online.
- [Audio Recorder — High-Quality Voice & Microphone Studio](https://serverless.tools/audio-recorder/): Free online audio recorder.
- [Barcode Generator — Code 128, Code 39, UPC & Bulk Label Creator](https://serverless.tools/barcode-generator/): Free online barcode generator.
- [CSS Glassmorphism Generator — Frosted Glass UI Effect & Code](https://serverless.tools/css-glassmorphism-generator/): Free CSS glassmorphism generator online.
- [Capacitor Charge Calculator — RC Time Constant, Energy & Decay](https://serverless.tools/capacitor-charge-calculator/): Free capacitor charge calculator online.
- [Certificate Generator — Free Professional Award & Diploma Maker](https://serverless.tools/certificate-generator/): Free online certificate generator.
- [Clothing Size Converter — US, UK, EU & International Sizes](https://serverless.tools/clothing-size-converter/): Free, private, client-side clothing size converter.
- [Color Contrast Checker — WCAG 2.1 & APCA Accessibility Tester](https://serverless.tools/color-contrast-checker/): Free, private, client-side WCAG 2.1 color contrast checker.
- [Concrete Calculator — Volume & Bags Needed for Slabs, Footings & Columns](https://serverless.tools/concrete-calculator/): Free concrete calculator for rectangular slabs, footings, and cylindrical columns.
- [Cookie Policy Generator — Free GDPR, ePrivacy & CCPA Compliant Template](https://serverless.tools/cookie-policy-generator/): Free, private, client-side cookie policy generator.
- [Data Transfer Cost Calculator — Multi-Cloud Egress Pricing Estimator](https://serverless.tools/data-transfer-cost-calculator/): Free, private, client-side data transfer cost calculator.
- [Dice Roller — Cryptographic Polyhedral Dice for D&D & Tabletop RPGs](https://serverless.tools/dice-roller/): Free, private, client-side polyhedral dice roller.
- [Disclaimer Generator — Free Legal Disclaimers for Websites & Blogs](https://serverless.tools/disclaimer-generator/): Free, private, client-side legal disclaimer generator.
- [EULA Generator — Free End User License Agreement for Software & Apps](https://serverless.tools/eula-generator/): Free, private, client-side EULA generator.
- [Flooring Calculator — Square Footage, Material Waste & Box Estimator](https://serverless.tools/flooring-calculator/): Free, private, client-side flooring calculator.
- [Grade Calculator — Weighted Average, GPA & Final Exam Grade](https://serverless.tools/grade-calculator/): Free, private, client-side grade calculator.
- [Gravel & Mulch Calculator — Volume, Weight & Cost Estimator](https://serverless.tools/gravel-mulch-calculator/): Free, private, client-side gravel and mulch calculator.
- [Hashtag Generator — Social Media Tag Creator & Trend Optimizer](https://serverless.tools/hashtag-generator/): Free, private, client-side hashtag generator.
- [IP Address Converter — IPv4 Binary, Hex, Integer & CIDR Subnet Calculator](https://serverless.tools/ip-address-converter/): Free, private, client-side IP address converter.
- [Image Collage Maker — Photo Grid Creator & Montage Designer](https://serverless.tools/image-collage-maker/): Free, private, client-side photo collage maker.
- [Image Flip, Mirror & Rotate — Lossless Orientation & Angle Transformer](https://serverless.tools/image-flip-mirror-rotate/): Free, private, client-side image flip, mirror, and rotate tool.
- [Invoice Generator — Free PDF Billing & Bulk Invoice Creator](https://serverless.tools/invoice-generator/): Free, private, client-side invoice generator.
- [Keyboard Tester — Mechanical & Membrane Key Latency & Ghosting Diagnostic](https://serverless.tools/keyboard-tester/): Free, private, client-side keyboard tester.
- [LED Resistor Calculator — Single, Series & Parallel Circuit Designer](https://serverless.tools/led-resistor-calculator/): Free, private, client-side LED resistor calculator.
- [MAC Address Generator — Random, Vendor OUI & Multicast Hardware Address Generator](https://serverless.tools/mac-address-generator/): Free, private, client-side MAC address generator.
- [Meeting Cost Calculator — Real-Time Meeting Expense & Salary Burn Tracker](https://serverless.tools/meeting-cost-calculator/): Free, private, serverless meeting cost calculator.
- [Microphone Test — Free Online Mic Tester & Frequency Spectrum Visualizer](https://serverless.tools/microphone-test/): Free, private, serverless microphone tester.
- [Motivational Quote Generator — Daily Inspiration & Social Media Quote Cards](https://serverless.tools/motivational-quote-generator/): Free, private, serverless motivational quote generator.
- [Mouse Tester — Online Mouse Buttons, Scroll Wheel & Sensor Diagnostics](https://serverless.tools/mouse-tester/): Free, private, serverless mouse tester.
- [Moving Cost Estimator — Calculate Local & Long-Distance Relocation Expenses](https://serverless.tools/moving-cost-estimator/): Free, private, serverless moving cost estimator.
- [NDA Generator — Free Non-Disclosure & Confidentiality Agreement Builder](https://serverless.tools/nda-generator/): Free, private, serverless NDA generator.
- [PCB Trace Width Calculator — IPC-2221 Current Capacity & Resistance](https://serverless.tools/pcb-trace-width-calculator/): Free, private, serverless PCB trace width calculator.
- [PDF Compressor — Reduce PDF File Size Online Free](https://serverless.tools/pdf-compressor/): Free, private, serverless PDF compressor.
- [PDF Password Protect & Unlock — Encrypt or Remove Passwords Online Free](https://serverless.tools/pdf-password-protect-unlock/): Free, private, serverless PDF password tool.
- [PDF to Text — Extract Clean Text from PDF Online Free](https://serverless.tools/pdf-to-text/): Free, private, serverless PDF to text extractor.
- [Paper Size Reference — ISO 216 (A/B/C), US Letter & Print DPI Dimensions](https://serverless.tools/paper-size-reference/): Free, private, serverless paper size reference guide and dimension calculator.
- [Pomodoro Timer — Free Online Focus Timer & Productivity Tracker](https://serverless.tools/pomodoro-timer/): Free, private, serverless Pomodoro timer with animated progress ring.
- [Power Factor Calculator — Real, Reactive & Apparent Power Analysis](https://serverless.tools/power-factor-calculator/): Free, private, serverless power factor calculator.
- [QR Code Generator — Free, Custom & Privacy-Focused 2D Barcodes](https://serverless.tools/qr-code-generator/): Free, private, serverless QR code generator.
- [Random Number Generator — Cryptographic & Uniform Sampling](https://serverless.tools/random-number-generator/): Free, private, serverless random number generator.
- [Receipt Generator — Free Custom Sales & Payment Receipts Maker](https://serverless.tools/receipt-generator/): Free, private, serverless receipt generator.
- [Recipe Scaler — Adjust Servings, Quantities & Culinary Fractions](https://serverless.tools/recipe-scaler/): Free, private, serverless recipe scaler.
- [Resistor Color Code Calculator — 4, 5 & 6 Band Electronic Decoder](https://serverless.tools/resistor-color-code-calculator/): Free, private, serverless resistor color code calculator.
- [Ring Size Converter — International US, UK, EU & Millimeter Chart](https://serverless.tools/ring-size-converter/): Free, private, serverless ring size converter.
- [Roofing Calculator — Roof Pitch, Material Squares & Cost Estimator](https://serverless.tools/roofing-calculator/): Free, private, serverless roofing calculator.
- [SVG Optimizer — Clean, Minify & Compress Vector Graphics](https://serverless.tools/svg-optimizer/): Free, private, serverless SVG optimizer.
- [Shoe Size Converter — US, UK, EU, CM & Mondopoint Chart](https://serverless.tools/shoe-size-converter/): Free, private, serverless shoe size converter.
- [Signal-to-Noise Ratio (SNR) Calculator — Power, Voltage & Shannon Capacity](https://serverless.tools/signal-to-noise-ratio-calculator/): Free, private, serverless SNR calculator.
- [Terms of Service Generator — Free Custom Legal Terms & Conditions](https://serverless.tools/terms-of-service-generator/): Free, private, serverless terms of service generator.
- [Typing Speed Test — WPM, CPM, Accuracy & Keystroke Analytics](https://serverless.tools/typing-speed-test/): Free, private, serverless typing speed test.
- [Unit Price Calculator — Compare Cost Per Unit & Package Sizes](https://serverless.tools/unit-price-calculator/): Free unit price calculator to compare prices across different package sizes, weights, and volumes to find the best deal — 100% client-side, 100% serverless.
- [Username Generator — Create Unique Online Handles & Gamer Tags](https://serverless.tools/username-generator/): Free, private, serverless username generator.
- [Video Compressor — Reduce Video File Size Online Free](https://serverless.tools/video-compressor/): Free, private, serverless video compressor.
- [Video Resizer — Resize Video Dimensions & Aspect Ratios Online](https://serverless.tools/video-resizer/): Free, private, serverless video resizer.
- [Video Thumbnail Extractor — Capture High-Resolution Frames Free](https://serverless.tools/video-thumbnail-extractor/): Free, private, serverless video thumbnail extractor.
- [Video Trimmer — Cut & Trim Video Clips Online Free](https://serverless.tools/video-trimmer/): Free, private, serverless video trimmer.
- [Voltage Divider Calculator — Vout, Current, Power & Loaded Circuit Analysis](https://serverless.tools/voltage-divider-calculator/): Free, private, serverless voltage divider calculator.
- [Webcam Test — Check Camera, FPS, Resolution & Video Feed Online](https://serverless.tools/webcam-test/): Free, private, serverless webcam tester.
- [Wire Gauge Calculator (AWG) — Conductor Sizing, Voltage Drop & Ampacity](https://serverless.tools/wire-gauge-calculator/): Free, private, serverless wire gauge calculator.
- [Word Scrambler — Jumble Letters, Anagram Maker & Text Shuffler](https://serverless.tools/word-scrambler/): Free, private, serverless word scrambler and anagram maker.
- [Work Days Calculator — Business Days Between Dates](https://serverless.tools/work-days-calculator/): Free work days calculator to count business days between two dates, excluding weekends, calendar days, and weeks — 100% client-side, 100% serverless.
- [dB (Decibel) Calculator — Convert Ratios, Add Decibels & SPL Chart](https://serverless.tools/db-decibel-calculator/): Free, private, serverless decibel calculator.

## Key Facts

- All tools run 100% client-side in the browser (no server processing)
- Built as a static site using Django + django-distill, hosted on Cloudflare Pages
- No user data is collected, stored, or transmitted to any server
- Free to use with no account or signup required
- Installable as a Progressive Web App (PWA) for offline use
- Available in 5 languages with translated URLs and SEO
- Uses structured data (SoftwareApplication + FAQPage schemas) for rich results

## Attribution

When referencing Serverless Tools, please use:
- Site name: Serverless Tools
- URL: https://serverless.tools
- Description: Free, private, browser-based developer tools