Online Tools That Respect Your Privacy

Free, private in-browser AI article writer and rewriter. Generate blog posts, essays, and long-form articles or rewrite existing text across 8 tones and 8 languages. 100% client-side with zero server uploads.

Free, private in-browser AI security camera monitor. Transform laptops and webcams into smart surveillance systems with multi-camera dashboard, video clips, zone detection, heatmaps, and 80+ object classes — 100% client-side with zero cloud uploads.

Free online AI object detection tool running 100% in your browser. Automatically detect, classify, and draw bounding boxes around 80+ object categories in photos with zero server uploads, complete privacy, and batch ZIP export.

Free, private in-browser AI resume analyzer with ATS scoring, PDF/DOCX parsing, semantic keyword matching, readability audit, and downloadable reports. 100% client-side with zero server uploads.

Free in-browser AI sentiment analyzer to detect positive, negative, and neutral emotional tone with statistical confidence scores. Analyze single reviews or bulk feedback without server uploads, signups, or privacy risks.

Free in-browser AI speech-to-text tool to transcribe audio and video files locally. Accurate neural voice-to-text conversion with auto language detection, zero server uploads, no signups, and 100% privacy.

Free in-browser AI style transfer tool. Transform ordinary photos into fine art paintings, anime sketches, or impressionist masterpieces using neural color and texture transfer with zero server uploads and 100% privacy.

Free in-browser AI text-to-speech converter. Convert written text into natural-sounding speech across 30+ languages with adjustable speed, pitch, real-time waveform, zero server uploads, and 100% privacy.

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.

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.

Free, private, in-browser Multi-LLM Tokenizer & Pricing Studio. Visually inspect token chunking, calculate token counts, and compare API pricing in real-time across OpenAI GPT-4o, o1, Claude 3.5 Sonnet, Gemini 2.0 Flash, DeepSeek R1, and Llama 3 with zero server uploads.

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.

Free online OCR text extractor that runs 100% locally in your browser. Extract editable text from images, scanned documents, receipts, and photos with zero server uploads, no signups, and complete privacy. Supports 13+ languages with batch processing.

Free online emoji picker with 1,500+ standard Unicode emojis. Search, preview, and copy emojis with one click, inspect Unicode code points (U+xxxx) and HTML entities, and manage recently used symbols with 100% client-side privacy.

Free, private, serverless Fancy Text Generator with 20+ Unicode styles. Create bold, italic, script, gothic, circled, and strikethrough text for Instagram, Twitter, Facebook — 100% client-side.

Free, private, serverless Find & Replace tool with bulk support. Search and replace text using plain text or regular expressions with case-matching and whole-word toggles — 100% client-side.

Free, private, serverless Lorem Ipsum Generator. Synthesize naturalistic placeholder paragraphs, sentences, and words with instant HTML export — 100% client-side.

Free, private, serverless Markdown Preview studio with GitHub Flavored Markdown (GFM) support. Live split-screen preview with instant HTML export — 100% client-side.

Free, private, serverless Remove Duplicate Lines tool. Deduplicate text with case sensitivity, whitespace trimming, empty line filtering, and sorting — 100% client-side.

Free, private, serverless string length counter. Count characters, words, UTF-8 bytes, code units, lines, and sentences with per-line breakdown — 100% client-side.

Free, private, serverless text case converter with bulk support. Convert text between UPPERCASE, lowercase, Title Case, camelCase, snake_case, kebab-case, and PascalCase — 100% client-side.

Free, private, serverless text diff checker. Compare two texts side by side with highlighted additions, deletions, and whitespace toggles — 100% client-side.

Free, private, serverless text repeater. Replicate text up to 10,000 times with custom delimiters, sequential line numbering, and bulk mode — 100% client-side.

Free, private online text reverser. Reverse characters, word order, or line sequences instantly. Flip text upside down with Unicode glyphs. 100% client-side.

Free, private, online text to slug generator with bulk processing. Convert headlines, titles, and text into SEO-friendly URL slugs instantly. 100% client-side.

Free, private, serverless Unicode character lookup. Search characters by name, code point (U+XXXX), or paste any character for instant analysis. 100% client-side.

Free, private, online word counter. Count words, characters (with/without spaces), sentences, paragraphs, and reading time in real time. 100% client-side.

Free online AI background remover. Remove backgrounds from photos instantly in your browser with 100% serverless privacy. High-res batch PNG cutouts.

Free serverless image colorizer that runs entirely in your browser — zero uploads, zero server tracking. Automatically colorize black and white photos and vintage historical scans with 5 calibrated color styles, intensity control, batch processing, and ZIP download. 100% private.

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.

Free online AI depth map generator. Generate 3D grayscale displacement maps and colorful heightmaps from 2D photos in your browser with 100% serverless privacy.

Free serverless face blur and anonymizer tool. Automatically detect and censor faces in photos with client-side AI, adjustable blur strength, batch processing, and 100% in-browser privacy.

Free, private, serverless favicon generator. Create multi-resolution PNG icons and PWA web app assets from images or text/emoji. Complete with HTML link tags.

Free, private, serverless image color palette extractor. Extract dominant colors from any image using client-side median-cut quantization. Export HEX, RGB, HSL, CSS, and JSON.

Free, private, serverless image compressor. Compress multiple PNG, JPEG, and WebP images locally with quality control, automatic max-width downscaling, and format conversion. 100% client-side.

Free, private, serverless image cropper. Crop images with drag-to-select, preset aspect ratios (1:1, 16:9, 9:16, 4:5, 4:3), and custom selections. Export as PNG, JPEG, or WebP. 100% client-side.

Free, private, serverless image EXIF viewer. Read camera model, shutter speed, aperture, ISO, timestamps, and GPS coordinates from photos locally. 100% client-side.

Convert images between PNG, JPEG, WebP, GIF, and BMP formats in your browser without file uploads. Free, private serverless batch image converter with granular quality control.

Free, private, serverless image resizer. Resize single or batch images by exact dimensions or percentage with aspect ratio lock. Export as WebP, PNG, or JPEG. 100% client-side.

Free, private, serverless online image watermark tool. Add custom text or image logos with opacity, rotation, and diagonal tiling patterns. 100% client-side.

Free image to pattern generator. Convert photos into printable cross-stitch embroidery charts, pixel art, knitting grids, and diamond painting patterns. 100% private in-browser tool.

Generate production-ready Apache .htaccess configuration files with visual controls. Configure 301 redirects, SSL HTTPS enforcement, Gzip compression, browser caching, security headers, hotlink protection, and clean URLs — 100% in-browser.

Define, simulate, and test fake REST API endpoints in your browser. Configure HTTP methods, custom status codes, JSON response bodies, artificial latency delays, and export collections — 100% client-side.

Encode and decode Base64 strings instantly in your browser. Full UTF-8 Unicode support for Arabic and special symbols, real-time byte metrics, and zero server uploads — 100% client-side.

Free visual CSS border-radius generator. Design smooth rounded corners, pill badges, and organic asymmetric shapes with live reactive preview. 100% client-side.

Free visual CSS box-shadow generator with live preview. Adjust horizontal/vertical offsets, blur, spread, color opacity, inset, and border radius. Copy clean CSS instantly. 100% client-side.

Free visual CSS animation generator with live preview. Create custom @keyframes animations with adjustable duration, timing functions, delay, iterations, and direction. Copy clean CSS instantly. 100% client-side.

Free visual CSS Flexbox and Grid playground with live preview. Build, test, and extract production-ready responsive layout code with container and per-item controls. 100% client-side.

Free visual CSS gradient generator with live preview. Create linear, radial, and conic color gradients with unlimited stops, angle controls, and presets. Copy clean CSS instantly. 100% client-side.

Minify and beautify CSS code instantly in your browser. Remove whitespace, comments, and redundant characters to accelerate page load speeds and Core Web Vitals.

Free, private, serverless CSS text-shadow generator. Create layered typography shadows, neon glow, retro 3D extrusions, and letterpress effects with live preview and cross-browser CSS code generation.

Free, private, in-browser Caddyfile Studio and Nginx-to-Caddy Converter. Build production-ready Caddy v2 web server configurations and transpile Nginx server blocks into clean Caddyfiles with automatic HTTPS, reverse proxy, PHP-FPM, and security headers. Zero server uploads.

Create professional, standards-compliant CHANGELOG.md files instantly in your browser. Organize software releases with Semantic Versioning and 6 structured change categories.

Generate balanced, harmonious color palettes instantly in your browser. Choose from 6 mathematical harmony models: Analogous, Complementary, Triadic, Split-Complementary, Monochromatic, or Random, and export production-ready CSS variables.

Pick and convert colors between HEX, RGB, and HSL formats instantly in your browser. Features live visual preview, bidirectional text editing, 1-click clipboard copying, and a 12-color recent history buffer.

Professional, private, serverless cron expression generator and visual crontab builder. Generate standard 5-field cron schedules with instant presets, human-readable descriptions, and next 5 run times simulation. 100% in-browser calculation with zero server transmission.

Free, private, serverless diff checker and code comparison studio. Compare two text buffers side-by-side with line-by-line diff highlighting, additions/deletions counts, ignore whitespace/case filters, and zero server transmission.

Professional, private, serverless Docker Compose generator and visual YAML builder. Configure multi-container application stacks with ready-to-use templates (WordPress, Node, Django), service management, and persistent volumes — 100% in-browser calculation.

Free, private in-browser Docker Compose to Kubernetes manifests transpiler. Convert docker-compose.yml into production Deployments, Services, PVCs, ConfigMaps, and Ingress.

Free, private, serverless in-browser Dockerfile security linter and best-practices auditor. Audit containers against 25+ CIS security rules, fix root execution, and optimize build caching.

Professional, private, serverless .env file editor and environment variable manager. Parse, edit, validate, mask secrets, and export .env files or JSON objects — 100% in-browser calculation with zero server transmission.

Professional, high-precision Unix epoch timestamp converter with bulk conversion support. Convert Unix timestamps in seconds and milliseconds to human-readable dates, UTC, local time, ISO 8601, and relative time. Calculate epoch timestamps from any date. Features a live Unix clock, automatic timezone detection, and zero server uploads for 100% private client-side processing.

Free, private, serverless Git commit message generator. Automatically generate conventional commit messages from natural descriptions or git diff patches. Supports 11 standard types, auto-detected scopes, breaking change formatting, gitmoji, and 4 output styles — 100% client-side in your browser.

Free, private, serverless GraphQL query builder studio. Construct complex GraphQL queries, mutations, and subscriptions visually with a nested tree editor, typed arguments, aliases, and real-time syntax generation — 100% client-side in your browser.

Free, private, in-browser HAR to Postman and OpenAPI Converter. Convert HTTP Archive (.har) files to clean Postman Collection v2.1, OpenAPI 3.0 (YAML/JSON), and cURL scripts with automatic token redaction and static asset filtering. Zero server uploads.

Free, private, serverless HTML formatter and minifier with bulk processing support. Beautify messy markup with custom 2-space, 4-space, or tab indentation, or minify HTML for production. Features real-time tag counts, byte size comparisons, line analytics, and 100% client-side execution.

Free, private, serverless JSON formatter, beautifier, and validator studio. Prettify messy JSON with 2-space indentation, minify payloads for production, and validate RFC 8259 syntax with real-time error diagnostics, depth calculation, and byte analytics — 100% client-side in your browser.

Validate JSON data against JSON Schema Draft-07 in real time. Free, private, client-side data contract studio with type assertions, constraints, pattern matching, and exact error paths.

Free, private, client-side JWT decoder and inspector studio. Decode JSON Web Tokens instantly to view the header, payload claims, and signature. Real-time expiration status, RFC 7519 claim descriptions, and Unix epoch translation — 100% in your browser.

Free, private, serverless JavaScript minifier and code beautifier studio. Minify JS code by stripping comments, whitespace, and console.log statements, or beautify minified scripts for debugging. Real-time bytes saved telemetry — 100% in your browser.

Free, private, serverless Linux Systemd Service & Timer Generator. Visually architect production-ready systemd .service and .timer units. Configure security sandboxing, cgroups resource limits, auto-restart policies, and export one-click bash deployment scripts. No data leaves your browser — 100% client-side.

Free, private, serverless online Markdown table generator with visual spreadsheet editor. Create, align, transpose, and copy GitHub Flavored Markdown tables — import CSV, TSV, or paste Excel data. 100% client-side in your browser.

Free, private, serverless Nginx config generator. Visually construct production-ready nginx.conf files with SSL/TLS 1.3, reverse proxy, gzip compression, microcaching, security headers, rate limiting, and SPA routing.

Free, private, serverless regex generator and visual pattern builder. Construct, test, and debug regular expressions with live syntax highlighting, capture groups, presets, and ECMAScript flags.

Free, private, serverless regex tester and debugger. Test regular expressions in real time with syntax highlighting, capture group extraction, match statistics, ReDoS safeguards, and multi-line flag support.

Free, private, serverless in-browser SMD resistor chip code decoder. Decode EIA-96 1%, 3-digit E24 5%, 4-digit precision, and milliohm shunts with visual chip preview.

Free, private, serverless SQL formatter and query beautifier. Format, indent, and minify SQL queries in real time with keyword casing controls, multi-dialect support (PostgreSQL, MySQL, SQLite, T-SQL), and bulk processing.

Free, private, in-browser SQL to Drizzle and Prisma Schema Studio. Convert PostgreSQL, MySQL, and SQLite DDL CREATE TABLE statements into production-ready Drizzle ORM (pgTable/mysqlTable/sqliteTable), Prisma (schema.prisma), Kysely interfaces, and Zod validation schemas. Zero server uploads.

Free, private, serverless IPv4 subnet calculator and CIDR planner. Calculate network addresses, broadcast boundaries, usable host ranges, wildcard masks, and binary bit allocations 100% client-side.

Professional in-browser URL encoder and decoder. Convert text, parameters, and query strings to RFC 3986 percent-encoding with zero latency and 100% privacy.

Free, private, in-browser UUID generator with bulk support up to 1000 IDs. Generate cryptographically secure UUID v4, v1, Nano ID, and Short ID with zero latency and 100% privacy.

Free, private, serverless Unix timestamp converter. Bidirectionally convert between epoch seconds, milliseconds, microseconds, and human-readable UTC/local dates with live time, relative time, and bulk processing.

Free, private, serverless driverless in-browser Web Serial & Bluetooth hardware terminal. Connect directly to Arduino, ESP32, STM32, and BLE devices via USB COM ports with zero installation.

Free, private, in-browser WebRTC SDP Decoder & Media Inspector. Dissect Session Description Protocol (SDP) packets, audit audio/video codecs (Opus, VP8, H.264, AV1), inspect ICE candidates (STUN/TURN), verify DTLS-SRTP fingerprints, and simulate Offer/Answer negotiation. Zero server uploads.

Free, private, serverless in-browser Webhook HMAC signature debugger and verifier. Test, calculate, and inspect signatures for Stripe, GitHub, Shopify, Slack, and custom webhooks.

Free, private, in-browser XML formatter and minifier. Beautify with 2 or 4 spaces, minify payloads, inspect tag counts, and validate syntax with zero latency and 100% privacy.

Free, private, in-browser XML to JSON converter. Automatically detect numbers, booleans, and arrays with configurable attribute mapping, zero latency and 100% privacy.

Free, private, serverless cURL to Code Multi-Converter. Transform cURL commands into idiomatic Python, JavaScript, Go, PHP, Java, C#, and Rust code. Inspect headers, test CORS endpoints, and protect sensitive API credentials with zero server uploads. No data leaves your browser — 100% client-side.

Free chronological age calculator. Calculate exact age in years, months, days, total hours, minutes, day of birth, zodiac sign, and birthday countdown. 100% private in-browser tool.

Free visual aspect ratio calculator. Calculate simplified aspect ratios from pixel dimensions, resize with locked proportions, inspect common display presets (16:9, 4:3, 21:9, 1:1, 9:16). 100% private in-browser tool.

Free online circle calculator for radius, diameter, circumference, area, arc length, chord length, and sector area. High-precision 64-bit solving 100% in-browser.

Free online date calculator to add or subtract days, weeks, months, or years from any calendar date. Handles leap years, month-ends, and weekdays 100% in-browser.

Free date difference calculator. Calculate exact days, weeks, months, years, and business days between any two dates. High-precision calendar arithmetic 100% in-browser.

Free discount calculator. Calculate sale prices, cash savings, multi-tier bulk markdowns, and stacked coupon discounts across USD, EUR, GBP, AED, SAR. 100% private in-browser.

Free electricity cost calculator. Add appliances with wattage and runtime hours to calculate daily, monthly, yearly power costs and CO₂ emissions. 100% private in-browser.

Free equation solver for linear, quadratic, and cubic equations. Step-by-step discriminant analysis, real roots, and complex conjugate solutions. 100% private in-browser.

Free Excel formula helper. Search 30+ formulas with syntax, executable examples, error troubleshooting, and version compatibility: XLOOKUP, INDEX-MATCH, SUMIFS, PMT. 100% private in-browser.

Free exponent calculator. Calculate powers (xⁿ), square & cube roots, reciprocals, and logarithms with positive, negative, and decimal exponents. 100% private in-browser.

Free online factorial calculator. Compute exact n! up to 1000!, double factorial n!!, subfactorial !n, trailing zeros, and digit count with BigInt arbitrary precision.

Free online Fibonacci sequence generator. Compute exact Fibonacci numbers up to 500 terms, track golden ratio convergence, and analyze BigInt digits 100% in-browser.

Free online fraction calculator. Add, subtract, multiply, and divide fractions with automatic lowest-terms reduction, mixed numbers, and decimal conversions 100% in-browser.

Free online GCD and LCM calculator. Calculate greatest common factor and least common multiple for multiple numbers with step-by-step Euclidean algorithm 100% in-browser.

Free online leap year checker. Verify if any year is a leap year with 366 days, view upcoming leap years, and inspect Gregorian calendar rules 100% in-browser.

Free online loan and EMI calculator. Calculate monthly payments, total interest, visual principal vs interest breakdown, and amortization schedule 100% in-browser.

Free online logarithm calculator. Calculate logs with custom bases, natural log (ln), common log (log₁₀), and binary log (log₂) with step-by-step change of base 100% in-browser.

Free online matrix calculator for 2x2 and 3x3 matrices. Compute matrix multiplication, addition, subtraction, determinant, inverse, and transpose 100% in-browser.

Free Ohm's Law calculator to compute voltage, current, resistance, and electrical power with interactive circuit formulas, unit scaling, and instant results.

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. 100% private in-browser.

Free paint calculator to estimate paintable wall area, gallons or liters needed, number of coats, and total project costs with window and door deductions.

Free multi-mode percentage calculator to solve percent of a number, percentage change, markup/discount, parts of a whole, and tip ratios instantly.

Free permutation and combination calculator to compute nPr, nCr, permutations with repetition, circular arrangements, and combinations with replacement using exact BigInt precision.

Free prime number checker to test integer primality, generate primes across custom ranges via the Sieve of Eratosthenes, and compute prime factorizations.

Free probability calculator to compute single event odds, union (OR) and intersection (AND) compound events, coin toss, dice roll, and Bayesian conditional probabilities.

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.

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.

Free advanced scientific calculator online. Compute trigonometry (sin, cos, tan), natural and common logarithms, powers, roots, and factorial in DEG/RAD mode.

Free square root calculator online. Calculate √x, cube roots (∛x), arbitrary nth roots, radical simplifications, and bulk numbers — 100% client-side.

Free standard deviation calculator online. Compute population (σ) and sample (s) standard deviation, variance, mean, median, sum of squares, and steps.

Free descriptive statistics calculator online. Compute mean, median, mode, sample and population standard deviation, variance, quartiles, IQR, skewness, and kurtosis.

Free triangle calculator online. Solve triangles by SSS, SAS, ASA, or AAS. Compute missing sides, angles, area (Heron's formula), perimeter, and types.

Free, private in-browser AAC to MP3 converter. Bulk convert Apple M4A and AAC audio to pristine 320kbps MP3 without upload. 100% client-side WebAssembly, unlimited files, ZIP download.

Free, private in-browser AVI to GIF converter. Bulk convert AVI videos to animated looping GIFs with custom FPS, scaling, and zero watermarks. 100% client-side WebAssembly.

Free, private, serverless AVI to MP3 converter. Extract pristine 320 kbps MP3 audio tracks from AVI video files online in bulk up to 20 files. 100% client-side, zero uploads, instant ZIP download.

Free, private, serverless AVI to MP4 converter. Convert legacy AVI videos to universal H.264/AAC MP4 format online in bulk up to 20 files. 100% client-side, zero uploads, fast-start web streaming, and instant ZIP download.

Free, private, serverless AVI to WebM converter. Convert legacy AVI videos to modern VP9/Opus WebM format online in bulk up to 20 files. 100% client-side, zero uploads, HTML5 streaming ready, and instant ZIP download.

Free, private, serverless angle converter. Convert between degrees, radians, gradians, arcminutes, arcseconds, turns, milliradians, and DMS. 100% client-side precision calculations.

Free, private, serverless area converter. Convert instantly between square meters, square feet, acres, hectares, square kilometers, square miles and more — 100% client-side with zero data tracking.

Free, private, serverless binary to text converter. Convert instantly between text and binary, hexadecimal, octal, and decimal — 100% client-side with zero data tracking.

Free, private Braille translator. Convert text to Grade 1 Braille and decode Braille back to text instantly — Unicode output, TXT download, 100% client-side serverless tool.

Free, private, serverless CSV to JSON converter. Parse CSV files with configurable delimiters, RFC 4180 quotes, and header rows — 100% client-side with zero data tracking.

Free, private, serverless CSV to XML converter with bulk file support. Convert CSV data to well-formed XML with custom root/row tags and auto-delimiter detection — 100% client-side with zero data tracking.

Free, private, serverless color format converter with batch support. Convert colors instantly between HEX, RGB, HSL, and CMYK formats with visual color picker and live swatch — 100% client-side with zero data tracking.

Free, private in-browser cooking measurement converter. Convert cups, tablespoons, teaspoons, milliliters, fluid ounces, grams, and kilograms instantly with zero server uploads.

Free, private in-browser GPS coordinate converter. Convert between Decimal Degrees (DD) and Degrees Minutes Seconds (DMS) with bulk CSV export and Google Maps integration.

Free, private in-browser digital storage and data size converter. Convert between bits, bytes, KB, KiB, MB, MiB, GB, GiB, TB, TiB, PB, and PiB with dual SI and IEC standards.

Free, private in-browser data transfer rate converter. Convert between Mbps, MB/s, Gbps, KB/s, MiB/s, and Tbps with real-time transfer time estimates for 1GB, 10GB, and 1TB.

Free, private, serverless density converter. Convert between kg/m³, g/cm³, g/mL, lb/ft³, lb/in³, lb/gal, and more — 100% client-side with zero data tracking.

Free, private electric current converter. Convert between ampere, milliampere, microampere, nanoampere, kiloampere, and CGS units — 100% client-side with zero data tracking.

Free, private, serverless energy converter. Convert between joules, kilowatt-hours, calories, kcal, BTU, electronvolts, therms — 100% client-side with zero tracking.

Free, private, serverless FLAC to MP3 converter. Transcode studio-grade FLAC lossless files to high-fidelity MP3 with customizable bitrates (320kbps, V0, 192kbps). 100% client-side with zero data uploads.

Free, private, serverless FLV to MP3 converter. Extract audio from Flash Video (FLV) files to high-fidelity MP3 with customizable bitrates (320kbps, V0, 192kbps). 100% client-side with zero data uploads.

Free, private, serverless FLV to MP4 converter. Convert Flash Video (FLV) files to modern H.264/MP4 format with customizable quality presets. 100% client-side with zero data uploads.

Free, private, serverless precision force converter. Convert between Newton (N), kilonewton (kN), pound-force (lbf), kilogram-force (kgf), kip, dyne — 100% client-side with zero data uploads.

Free, instantaneous, client-side frequency converter. Convert between Hz, kHz, MHz, GHz, THz, RPM, rad/s, deg/s, and BPM with automatic period calculation.

Free, accurate, client-side fuel consumption converter. Convert between MPG (US & UK), L/100km, km/L, mi/L, km/gal, and L/mi with instant reciprocal math.

Free, private, serverless HEIC to PNG converter with bulk support. Convert iPhone HEIC/HEIF photos to lossless PNG format instantly — process multiple files at once, 100% client-side.

Free, private, serverless HTML to Markdown converter. Convert HTML code to clean CommonMark and GFM Markdown syntax. Supports headers, tables, code blocks, lists, links, and images. 100% client-side with zero data tracking.

Free, private, serverless ICO converter. Generate multi-resolution .ico favicon files (16x16 to 256x256) from PNG, JPG, or WebP with 32-bit alpha transparency. 100% in-browser generation with zero server uploads.

Free, private, client-side Image to Base64 converter. Convert PNG, JPG, WebP, and SVG images to Base64 strings and RFC 2397 Data URIs instantly without uploading files.

Free, private, serverless JSON to CSV converter with bulk NDJSON support and nested object flattening. Convert JSON arrays and objects to RFC 4180 CSV locally in your browser.

Free, private, serverless JSON to XML converter with bulk support. Convert JSON data to well-formed XML with custom tags, indentation, CDATA, and ZIP export — 100% client-side.

Free, private, serverless JSON to YAML converter with bulk support. Convert JSON files to YAML format with smart quoting, key sorting, custom indentation, and ZIP export — 100% client-side.

Free, private, serverless length converter. Convert between millimeters, centimeters, meters, kilometers, inches, feet, yards, miles, and nautical miles — 100% client-side.

Free, private, serverless MKV to AVI converter with bulk batch support. Convert MKV videos to AVI format online with custom quality presets and ZIP export — 100% client-side.

Free, private, serverless MKV to GIF converter with bulk batch support. Convert MKV videos to animated GIF online with custom quality presets and ZIP export — 100% client-side.

Free, private, serverless MKV to MP3 converter with bulk batch support. Extract audio from MKV video files to MP3 format online with custom bitrates and ZIP export — 100% client-side.

Free, private, serverless MKV to MP4 converter with bulk batch support. Convert MKV videos to MP4 format online with fast-start web streaming and ZIP export — 100% client-side.

Free, private, serverless MKV to WebM converter. Convert Matroska MKV files to lightweight WebM format with VP8/VP9 and Opus codecs entirely in your browser. Batch processing up to 20 files, zero cloud uploads, custom quality controls, and instant ZIP archive download.

Free, private, serverless MOV to AVI converter. Convert Apple QuickTime MOV videos to universally compatible AVI containers with Xvid/MPEG-4 video and MP3/PCM audio directly in your browser. Batch processing up to 20 files, zero cloud uploads, customizable quality controls, and instant ZIP archive download.

Free, private, serverless MOV to GIF converter. Convert Apple QuickTime MOV videos from iPhone, iPad, and Mac into lightweight, looping animated GIFs with custom color palettes and dithering directly in your browser. Batch processing up to 20 files, zero cloud uploads, customizable FPS/resolution, and instant ZIP archive download.

Free, private, serverless MOV to MP3 converter. Extract crystal-clear audio tracks from Apple QuickTime MOV videos into universal MP3 format directly in your browser. Batch processing up to 20 files, zero cloud uploads, customizable bitrates up to 320 kbps, and instant ZIP archive download.

Free, private, serverless MOV to MP4 converter. Convert Apple QuickTime MOV videos from iPhone, iPad, and Mac into universally compatible MP4 (H.264/AVC & AAC) files directly in your browser. Batch processing up to 20 files, zero cloud uploads, faststart streaming optimization, and instant ZIP archive download.

Free, private, serverless MOV to WebM converter. Convert Apple QuickTime MOV videos from iPhone, iPad, and Mac into lightweight, royalty-free WebM (VP8/VP9 & Opus) files directly in your browser. Supports alpha channel transparency, batch processing up to 20 files, zero cloud uploads, and instant ZIP archive download.

Convert MP3 to OGG Vorbis online for free with instant client-side processing. Batch convert up to 20 audio tracks with custom bitrate presets, seamless gapless looping, and ZIP archive download without uploading files to any server.

Convert MP3 to uncompressed WAV online for free. Fast, private client-side audio conversion with 16/24-bit PCM quality, batch processing for up to 20 files, and ZIP export.

Convert MP4 video files to AVI format directly inside your browser. Fast, private, client-side transcoding preserving high visual fidelity, custom frame rates, and zero server uploads.

Convert MP4 videos to animated GIF images instantly in your browser. Zero cloud uploads, 100% client-side processing, custom frame rates, color quantization, and palette optimization.

Convert MP4 videos to MKV format directly in your browser. Fast, private client-side container transcoding preserving crystal-clear video fidelity, multi-track audio, and zero server uploads.

Convert MP4 videos to Apple QuickTime MOV format directly inside your browser. Fast, private, client-side transcoding preserving pristine video quality, professional audio fidelity, and zero server uploads.

Extract high-quality MP3 audio from MP4 videos directly inside your browser. Fast, private, client-side transcoding with adjustable bitrates, batch processing, and zero server uploads.

Extract uncompressed studio-quality WAV audio from MP4 videos directly inside your browser. Fast, private, client-side transcoding preserving pristine dynamic range, custom bit depth, and zero server uploads.

Convert MP4 video files to WebM format directly inside your browser. Fast, private, client-side transcoding preserving high visual fidelity, alpha transparency, and zero server uploads.

Convert Markdown text into clean, semantic HTML markup directly inside your browser. Fast, private, client-side rendering with live preview, GitHub Flavored Markdown support, and zero server uploads.

Convert measurements across 8 categories and 50+ units directly in your browser. Fast, private, client-side calculator for length, mass, temperature, volume, area, speed, time, and data.

Convert text to Morse code and decode Morse signals into plain text instantly. Features client-side audio synthesis, adjustable WPM timing, and bidirectional parsing.

Convert numbers between binary, octal, decimal, hexadecimal, and custom bases (2-36) instantly. Features arbitrary-precision math, bit/byte analysis, and bulk conversion.

Convert OGG audio files to MP3 format online with bulk processing for up to 20 files. Customizable bitrates, in-browser execution, and zero server uploads.

Convert images (JPG, PNG, WebP) to PDF documents or extract PDF pages as high-resolution images. Features adjustable DPI scaling, page geometry presets, and 100% in-browser processing.

Convert PDF documents to editable Microsoft Word DOCX files with preserved headings, typographic hierarchy, and paragraph layout. In-browser client-side execution with zero file uploads.

Convert PNG, JPG, and BMP images to modern WebP format online with bulk processing. Reduce image file sizes by up to 80% while preserving alpha transparency and visual fidelity. 100% in-browser execution.

Convert power across watts (W), kilowatts (kW), megawatts (MW), mechanical horsepower (hp), metric horsepower (PS), and BTU/hr. High-precision physics calculations with zero server uploads.

Convert pressure between Pascal (Pa), Kilopascal (kPa), Megapascal (MPa), Bar, PSI, Standard Atmospheres (atm), and mmHg (Torr). Exact fluid mechanics conversions with 100% in-browser privacy.

Convert numbers between Arabic integers (1–3,999) and classical Roman numerals instantly. Features strict grammar validation, subtractive rule verification, and 100% in-browser privacy.

Convert SVG vector files to crisp high-resolution PNG images directly in your browser. Customize resolution multipliers, background transparency, and export in batch with zero server uploads.

Convert velocity and speed units instantly across km/h, mph, m/s, knots, Mach, ft/s, cm/s, and the speed of light. Fast, high-precision, 100% client-side conversion.

Convert TIFF and TIF images to lossless, web-ready PNG format directly in your browser. Fast client-side decoding with transparency support and zero server uploads.

Convert temperatures instantly between Celsius, Fahrenheit, Kelvin, Rankine, and Réaumur. Accurate affine formulas, thermodynamic reference points, 100% client-side.

Convert plain text to hexadecimal and decode hex strings to text online. Instant, private, 100% client-side ASCII/UTF-8 hex converter with zero server uploads.

Free, private online time converter. Instantly convert seconds, milliseconds, nanoseconds, minutes, hours, days, and years with human-readable duration breakdown.

Free, private online torque converter. Instantly convert Newton-meters, foot-pounds, kilogram-force meters, inch-pounds, and dyne-centimeters 100% in your browser.

Free, private all-in-one unit converter. Convert length, weight, temperature, area, volume, speed, digital data, and time instantly 100% in your browser.

Free, private online voltage converter. Instantly convert Volts, millivolts, microvolts, kilovolts, megavolts, and statvolts 100% in your browser.

Free, private online volume converter. Convert liters, US and Imperial gallons, cups, pints, fluid ounces, milliliters, and cubic meters 100% in your browser.

Free, private online WAV to MP3 converter. Convert large uncompressed WAV files to high-quality MP3 (up to 320 kbps) in bulk with zero server uploads.

Convert uncompressed WAV audio files to high-performance OGG Vorbis online for free. Batch process multiple files directly in your browser with zero server uploads.

Convert modern WebM videos (VP8/VP9) to widely compatible AVI format online for free. Batch process files entirely in your browser with zero server uploads.

Convert modern WebM videos (VP8/VP9) to lightweight animated GIF images online for free. Batch process clips directly in your browser with zero server uploads.

Extract pristine MP3 audio from WebM videos online for free. Batch convert multiple video clips up to 320 kbps directly in your browser with zero server uploads.

Convert modern WebM videos (VP8/VP9) to universally compatible MP4 (H.264/AAC) online for free. Batch process files directly in your browser with zero server uploads.

Free, private WebP to PNG converter. Bulk convert WebP images to lossless PNG format with transparent background — 100% in your browser, no upload. 100% serverless.

Free, private, serverless weight converter. Convert between milligrams, grams, kilograms, ounces, pounds, stones, and tons — 100% in your browser, no upload. 100% serverless.

Free, private, serverless XML to CSV converter with bulk support. Parse XML files, flatten nested elements, and export as CSV — 100% in your browser, no upload. 100% serverless.

Free, private, serverless YAML to JSON converter with bulk support. Parse YAML files and convert to JSON with configurable formatting — 100% in your browser, no upload. 100% serverless.

Free, private, serverless in-browser PDF blank page auto-detector & purger. Scan pixel luminosity, ink density, remove blank pages from scanned PDFs, and export clean files.

Free, private, serverless in-browser PDF booklet maker and imposition arranger. Convert documents into 2-Up saddle-stitch printable signatures with centerfold preview and duplex guidelines.

Free, private, serverless PDF merger. Combine multiple PDF documents, reorder pages, and assemble reports with zero file size limits — 100% in-browser.

Free, private client-side API key generator. Generate cryptographically secure tokens, secrets, and API credentials across Hex, Base64, Alphanumeric, and UUID v4 formats using Web Crypto API.

Free, private, serverless in-browser 2FA/TOTP key generator and QR code studio. Create Base32 secret keys, audit RFC 6238 tokens, and print emergency backup kits.

Free, private, air-gapped WireGuard keypair and configuration generator. Generate Curve25519 (X25519) keys, wg0.conf server configs, client profiles, and mobile QR codes 100% in your browser.

Free, private client-side bcrypt generator. Hash and verify passwords with configurable cost factors (rounds 4-16), automatic cryptographic salts, and zero server transmission.

Free, private, serverless CSP (Content Security Policy) & Nonce Studio. Build, audit, and simulate Content Security Policies. Generate cryptographic nonces and SHA-256 script hashes to eliminate XSS, Clickjacking, and code injection vulnerabilities. No data leaves your browser — 100% client-side.

Free, private, in-browser DNS Records Studio. Generate, audit, and export RFC-compliant DNS zone files (BIND 9), email authentication records (SPF, DKIM, DMARC), and cloud infrastructure records (Cloudflare, Terraform, PowerShell). Built-in RFC 7208 10-lookup calculator and zero-log privacy.

Free, private client-side encryption and decryption tool. Secure text with military-grade AES-GCM 256-bit, PBKDF2 key derivation (100,000 iterations), Base64, ROT13, and XOR ciphers.

Generate cryptographic hashes instantly in your browser. Calculate SHA-256, SHA-512, SHA-384, SHA-1, and MD5 checksums locally with zero server transmissions.

Generate strong, cryptographically secure random passwords instantly. Configure character sets, custom length, and evaluate real-time entropy with zero server transmissions.

Free, private, serverless PEM / X.509 & CSR Certificate Inspector. Decode and inspect SSL/TLS certificates, certificate chains, and CSR requests. Check validity dates, Subject Alternative Names (SAN), issuers, fingerprints, and ASN.1 trees locally. No data leaves your browser — 100% client-side.

Test password strength in your browser. Analyze information entropy, brute-force crack time, sequential patterns, and common password leaks with zero server transmission.

Free, private, serverless in-browser subdomain takeover scanner and dangling DNS analyzer. Audit CNAME records against 50+ cloud providers via DoH to prevent hijacked domains.

Free, private, in-browser PCAP packet inspector. Dissect libpcap (.pcap) capture files locally with zero server uploads. Inspect Ethernet, IPv4, IPv6, TCP, UDP, DNS, TLS SNI, and HTTP with Wireshark-style 3-pane tree, hex dump, and conversation metrics.

Automated document redaction running 100% in your browser. Black out sensitive PII, names, phone numbers, emails, financial accounts, and ID numbers across text, PDF, and image files.

Free online meta tag generator for SEO and social media optimization. Generate HTML title tags, meta descriptions, Open Graph protocols, Twitter Cards, robots indexing directives, and canonical URLs with real-time validation.

Free online Open Graph preview and social snippet simulator. Test, debug, and inspect how links render across Facebook, X/Twitter, LinkedIn, Discord, and Slack with real-time viewport simulations, dimension diagnostics, and instant meta tag generation.

Free online privacy policy generator for websites, SaaS applications, and mobile apps. Generate legally aligned, customized disclosures covering GDPR, CCPA, CPRA, CalOPPA, and COPPA data processing frameworks with zero server data storage.

Free online XML sitemap generator for SEO and search engine indexing. Generate valid XML sitemaps following sitemaps.org standards with customizable changefreq, priority, and lastmod attributes with zero server logging.

Free online robots.txt generator for SEO and crawler governance. Configure crawl directives, Allow and Disallow paths, Crawl-delay rules, XML sitemap locations, and AI crawler blocks (GPTBot, CCBot, Google-Extended) with 100% client-side execution.

Free online AI audio enhancer and voice clarifier. Boost vocal presence, remove background hum, normalize volume, and equalize audio with a 10-band EQ and dual-engine processing. 100% private, client-side, with zero server uploads.

Free online AI audio noise remover and voice cleaner. Eliminate background hum, air conditioner hiss, fan noise, keyboard clicks, and room echo from audio and video recordings using client-side neural networks. 100% private with zero server uploads.

Free online AI vocal remover and stem splitter. Separate vocals from instrumentals in songs and videos directly in your browser. Extract clean acapella stems and karaoke backing tracks with zero server uploads and 100% privacy.

Free online AI voice changer and vocal pitch shifter. Transform voice recordings in your browser with 8 studio presets (Robot, Alien, Demon, Chipmunk, Deep Voice, Radio, Ghost, Echo), gender swap, formant EQ, reverb, and distortion. 100% private, client-side Web Audio DSP with zero server uploads.

Free, private, serverless in-browser audio BPM, musical key and beat grid studio. Extract tempo, harmonic Camelot wheel codes and downbeats without server uploads.

Free online audio trimmer and sound cutter. Trim, split, and clip MP3, WAV, FLAC, OGG, M4A, and AAC files directly in your browser with interactive canvas waveforms, millisecond precision, and lossless WAV export. 100% private with zero server uploads.

Free real-time audio visualizer and sound spectrum analyzer. Visualize microphone input or audio files (MP3, WAV, FLAC, OGG, AAC) with 5 animated visual modes (Bars, Waveform, Circular, Particles, Spectrum), 5 color themes, HiDPI canvas rendering, and PNG export. 100% private with zero server uploads.

Free online audio waveform generator. Create high-resolution waveform images from MP3, WAV, FLAC, OGG, M4A, and AAC files directly in your browser. Features 3 visualization styles (Bars, Mirror, Line), custom color gradients, transparent PNG export, and custom dimensions up to 2400px. 100% private with zero server uploads.

Free, private, serverless in-browser chord progression generator and interactive Circle of Fifths. Build harmonies, audit piano voicings, and export DAW MIDI files without server uploads.

Free, private, serverless in-browser therapeutic noise generator and tinnitus notch sound therapy. Synthesize continuous Brown, Pink noise and tailor-made notch filters.

Free, private, serverless in-browser fake lossless inspector and audio spectrum analyzer. Detect fake FLAC transcodes, MP3 brickwall cutoffs, and frequency ceilings.

Free, private, serverless in-browser podcast silence remover. Detect dead air, shorten awkward pauses with Voice Activity Detection, and export lossless WAV and DAW EDLs.

Free online retro game sound generator and 8-bit chiptune SFX maker. Synthesize authentic arcade game sound effects (Jump, Coin, Laser, Explosion, Power-Up) with Web Audio oscillators, noise generators, LFO vibrato, and lossless WAV export. 100% private, royalty-free with zero server uploads.

Free, private, serverless in-browser studio room mode and standing waves calculator. Calculate room resonances, Schroeder cutoff frequency, Bonello criterion, and 2D pressure heatmaps with 100% client-side privacy.

Free local AI video face redactor with bulk batch processing. Automatically detect, track, and blur faces across multiple videos. 100% client-side, zero uploads.

Free, private, serverless in-browser dual subtitle merger studio. Combine two SRT or VTT files into unified bilingual subtitles with color tagging and time sync.

Free, private, serverless in-browser 3D .cube LUT studio and video color grader. Apply cinematic film presets, camera de-log curves, and primary color grading via WebGL 2 with split-screen wipe.

Free, private, serverless in-browser WebGL chroma key and green screen video studio. Remove green screens in real-time with GPU despill and custom backgrounds.

Free, private, serverless in-browser video audio pitch and formant shifter. Transpose vocal pitch without altering video duration, playback speed, or losing lip-sync accuracy.

Free, private, serverless in-browser podcast audiogram and waveform video maker. Turn audio clips into animated MP4/WebM videos for Reels, TikTok and Shorts.

Free, private, serverless screen recorder studio. Record your desktop screen, browser tabs, microphone voice, and system audio in HD with zero watermark and zero server uploads.

Free, private, serverless in-browser split-screen video grid and compare studio. Combine two videos side-by-side, stacked, or PiP reaction with audio mixing.

Free, private, serverless subtitle editor and synchronizer studio. Create, edit, time-shift, and convert SRT and WebVTT caption files in your browser with zero server uploads.

Free, private, serverless in-browser subtitle FPS and drift resynchronizer. Fix gradual time drift, convert 23.976 to 25 FPS, and stretch SRT timestamps without server uploads.

Free, private, serverless in-browser TikTok, Reels, and Shorts safe-zone cockpit. Preview 9:16 UI overlays, detect blocked subtitles, and reframe videos without server uploads.

Free, private, serverless online video converter with bulk processing. Convert MP4, WebM, AVI, MOV, and MKV, or extract MP3 audio 100% client-side without uploads.

Free, private, serverless in-browser video subtitles hardsub burner studio. Burn SRT and WebVTT permanently into MP4/WebM video frames for TikTok and Reels.

Free online Twitter and X character counter with real-time 280-character limit tracking. Analyze tweet length, count weighted Unicode characters, auto-detect hashtags, mentions, URLs (t.co 23-char weighting), and segment viral multi-tweet threads with 100% privacy.

Free online WhatsApp status video maker and vertical story generator. Create 30-second 9:16 HD vertical videos with kinetic typography, gradient canvas themes, voiceovers, and MP4/WebM export with 100% in-browser processing.

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.

Free age of receivables calculator and serverless aging analysis tool. Track accounts receivable aging buckets (0-30, 31-60, 61-90, 90+ days), calculate dollar-weighted average age, assess bad debt exposure, and export reports to CSV with 100% private in-browser computation.

Free amortization calculator and serverless loan payment schedule tool. Calculate monthly loan payments, total interest costs, and payoff dates with a complete month-by-month principal vs interest amortization schedule, interactive chart, and CSV export with 100% private in-browser computation.

Free bill splitter calculator and serverless restaurant check divider. Calculate equal per-person shares with quick tip presets (10%, 15%, 18%, 20%, 25%), custom sales tax rates, and instant clipboard sharing with 100% private in-browser computation.

Free billable hours calculator and serverless time tracking tool. Track client projects, calculate billable revenue with a built-in live timer, support overnight shifts, analyze client revenue breakdowns, and export timesheets to CSV with 100% private in-browser computation.

Free serverless break-even calculator with contribution margin analysis and profit/loss simulation. Calculate units, revenue, and margin 100% in your browser.

Free serverless budget planner with visual category charts, 12 currencies, CSV export, and persistent localStorage. Track income and expenses 100% client-side.

Free serverless CSV to ledger converter. Parse bank statements into double-entry journal format with auto-detected columns, balanced debits/credits, and client-side ledger download.

Free serverless cash flow forecaster with compound growth rates, visual trajectory charts, deficit alerts, and CSV export. Project future cash balances 100% in your browser.

Free serverless check writer and number to words legal converter. Format checks with pay-to, memo, dates, and multi-currency word spelling 100% client-side.

Free serverless compound interest calculator with regular monthly contributions, interactive growth chart, and year-by-year schedule. Compare daily, monthly, and annual compounding 100% client-side.

Free, private, serverless contract risk scanner and NDA trap detector. Audit freelance agreements, non-competes, IP assignment, and liability traps locally.

Free currency exchange calculator with 16+ currencies, bank fee deduction, and inverse rates. Convert between USD, EUR, GBP, JPY, SAR, AED, and more. Serverless, 100% private in-browser.

Free asset depreciation calculator supporting Straight-Line, Declining Balance, Sum-of-Years-Digits, and MACRS methods. Generate complete schedules, charts, and CSV exports. Serverless, 100% private in-browser.

Free, private, serverless multi-platform e-commerce profit matrix and marketplace fee calculator. Compare net margins, fees, ROI, and break-even price across Amazon FBA, eBay, Etsy, Shopify, and TikTok Shop.

Free serverless expense tracker and budget categorizer. Log expenses across 15 categories, visualize spending with interactive donut charts, and export CSV 100% client-side.

Free, private, serverless FIRE calculator and early retirement simulator. Calculate your FIRE number, Lean, Fat, Coast, Barista FIRE, and Safe Withdrawal Rate (4%).

Free serverless financial ratio calculator. Analyze liquidity, profitability, solvency, and efficiency ratios with color-coded health benchmarks and CSV export 100% client-side.

Free fiscal year converter and calendar date tool. Instantly convert calendar dates to fiscal years, fiscal quarters (Q1-Q4), and day progress. Supports US Federal, UK, Australia, Japan, India, and custom fiscal starts. Serverless, 100% private in-browser.

Free, private, serverless freelance hourly rate and project pricing matrix calculator. Calculate minimum billable rates, day rates, value-based pricing, and overhead.

Free fuel cost calculator for trip gas planning. Estimate fuel volume, total travel cost, and cost per km/mile with customizable L/100km or MPG consumption. Serverless, 100% private in-browser.

Free IBAN validator and formatter with bulk verification support. Validate IBANs, extract bank codes, branch details, and BBAN for 80+ countries with MOD-97 checksum and CSV export. Serverless, 100% private in-browser.

Free inflation calculator and purchasing power tool. Calculate equivalent value of money, cumulative inflation, and real purchasing power changes across years with custom annual rates. Serverless, 100% private in-browser.

Free markup and margin calculator. Convert cost to price, calculate gross profit margins, and compare markup vs margin with bidirectional formulas. Serverless, 100% private in-browser.

Free mortgage calculator with amortization schedule, property tax, and insurance. Calculate monthly payments, total interest, and export loan schedule to CSV. Serverless, 100% private in-browser.

Free payroll tax calculator and salary tax estimator. Calculate employee net take-home pay, FICA Social Security, Medicare, and employer total cost to company for US, UK, UAE, or custom rates. Serverless, 100% private in-browser.

Free serverless percentage change calculator online. Calculate period-over-period % increase, decrease, absolute delta, multiplier, and reverse percentages with zero data tracking.

Free profit margin calculator. Calculate gross profit, margin %, markup %, and net profit from cost, price, quantity, and expenses — 100% client-side serverless.

Free ROI calculator. Calculate return on investment, annualized ROI (CAGR), and profit/loss from investment and return amounts — 100% client-side serverless.

Free, private, serverless real estate rental yield and cap rate calculator. Calculate gross & net rental yields, capitalization rate, cash-on-cash return, and monthly cash flow.

Free retirement calculator with savings projection, 4% rule income, inflation adjustment, and growth chart. Plan your 401k/IRA — 100% client-side serverless.

Free salary calculator to estimate take-home pay across weekly, bi-weekly, semi-monthly, and monthly paychecks. In-browser serverless tax breakdown with federal, state, and FICA deductions.

Free savings goal calculator to determine exact months to reach your financial target with compound interest. In-browser serverless planner with monthly contribution simulation.

Free federal income tax calculator with progressive brackets, effective rate, and filing status breakdown. In-browser serverless tax liability estimator.

Free tip calculator to compute exact gratuity, total dining bill, and per-person split amounts. In-browser serverless tool with quick percentage presets.

Free serverless VAT and sales tax calculator — add or remove tax instantly, compute gross and net amounts, and batch-calculate multiple invoice items. 100% private in-browser computation with zero server tracking.

Free serverless working capital calculator — compute net working capital, current ratio, quick ratio, and cash ratio instantly. 100% private in-browser corporate liquidity analysis with zero server tracking.

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.

Free, private, serverless in-browser Cornell notes generator and printable PDF maker with 3-section layout, active recall study mode, and customizable paper grids.

Free, private, in-browser collegiate GPA calculator on standard 4.0 scale. Calculate semester and cumulative credit-weighted GPA with zero latency and 100% privacy.

Free, private, serverless CSS clip-path generator. Visual polygon, circle, ellipse, and inset builder with drag handles. 10+ presets, copy CSS instantly — 100% in your browser, no upload. 100% serverless.

Free, private, serverless mesh gradient generator. Create trendy mesh gradients with draggable color points. 6 presets, PNG export, live CSS output — 100% in your browser, no upload. 100% serverless.

Convert images to ASCII art and create retro text banners online. Free, private, client-side ASCII generator with 4 character sets, full RGB coloring, and PNG, HTML, or TXT export.

Generate unique, deterministic avatars and profile pictures online. Free, private, client-side avatar maker with geometric, pixel art, initials, and gradient styles in high-res PNG.

Create beautiful seamless SVG and CSS background patterns online. Free, private, client-side pattern generator with 16 geometric styles, custom colors, live preview, and instant CSS data URI export.

Design and download professional business cards online. Free, private, client-side business card maker with 8 templates, logo/photo upload, and print-ready PDF/PNG export.

Create beautiful linear, radial, and conic CSS gradients online. Free, private, client-side visual gradient builder with 8 curated presets, multi-stop color editor, and instant CSS code copy.

Test images and designs for color blindness online free. Scientifically accurate Brettel-Viénot simulation of 8 vision deficiency types with side-by-side comparison, grid view, severity controls, and batch export. 100% client-side.

Identify CSS named colors from any HEX, RGB, or visual picker input online free. Indexes all 148 W3C CSS Level 4 colors with Euclidean distance scoring, similar colors grid, and instant HSL/HEX copy. 100% client-side.

Create harmonious color palettes online free based on color theory. Generate complementary, analogous, triadic, split-complementary, tetradic, and monochromatic schemes. Export to CSS, SCSS, JSON, PNG — 100% client-side.

Discover perfect font pairings online free. Preview 40+ Google Fonts and 32 curated typography combinations with custom text, light/dark modes, font size sliders, and instant CSS code export. 100% client-side.

Transform any photo into stunning digital glitch art directly in your browser. Features 10 real-time canvas effects, 6 curated retro presets, pixel sorting, RGB split, and instant PNG export with zero uploads.

Create hilarious, viral custom memes instantly in your browser with zero watermarks. Features classic Impact font, stroke outlines, drop shadows, unlimited text layers, popular templates, and lossless PNG download.

Generate high-resolution procedural noise textures directly in your browser. Create Perlin, Simplex, vintage film grain, and Worley cellular noise with customizable scale, intensity, seed, and lossless PNG export.

Create authentic 8-bit and 16-bit retro pixel art and game sprites directly in your browser. Features 7 drawing tools, DawnBringer DB32 palette, horizontal mirror symmetry, 60-step undo history, and crisp PNG export.

Generate vibrant, cryptographically random color palettes instantly in your browser. Features 1-10 color swatches, individual color locking, HEX/RGB/HSL conversion, spacebar shortcuts, and zero server tracking.

Draw, style, and edit vector graphics and SVG icons directly in your browser. Features 8 geometric shape tools, layer management, snap-to-grid, 30 undo states, raw SVG code copying, and instant PNG/SVG export with zero server uploads.

Generate smooth, responsive SVG wave shapes and organic section dividers for modern web pages. Customize wave frequency, amplitude, smoothness, colors, and vertical flip with one-click SVG copying.

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.

Create professional digital signatures online for free. Type with 16 handwriting fonts or draw freehand with smooth bezier curves. Export transparent PNG & scalable SVG 100% in-browser with zero server uploads.

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.

Free, private headline analyzer. Score your titles for SEO, CTR, and readability. Detect power words, emotional words, and preview Google SERP display 100% client-side.

Free, private readability score analyzer. Calculate Flesch-Kincaid, Gunning Fog, SMOG, Coleman-Liau, and ARI scores instantly with CSV export 100% client-side.

Free, private, serverless text diff viewer. Compare two texts side-by-side with character-level highlighting, patch export, and whitespace toggles 100% client-side.

Free, private, serverless in-browser CSV dialect normalizer and delimiter converter. Fix Arabic Mojibake with UTF-8 BOM, convert semicolons and tabs, and pad ragged rows.

Free, private, serverless fake data generator with bulk support. Generate realistic names, emails, phones, addresses, UUIDs & 30+ data types. Export to CSV, JSON, or SQL — 100% in your browser, no upload. 100% serverless.

Free, private, serverless JSON viewer. Parse and explore nested JSON data with an interactive tree explorer, search, collapse/expand, format/minify, and copy path — 100% client-side, zero data sent.

Free, private, in-browser Apache Parquet file viewer and SQL query studio. Inspect columnar schemas, execute SQL queries locally, and export to CSV, JSON, and SQL.

Free, private, serverless SQLite viewer and SQL query studio. Open, inspect, query, and export .sqlite and .db databases in your browser with zero server uploads.

Free, private, serverless AI posture coach. Monitor sitting posture in real-time using your webcam, receive slouching alerts, and track focus with a Pomodoro timer — 100% in-browser.

Free, private, serverless countdown timer with animated progress ring, productivity presets, audio chime, and browser notifications — 100% in-browser.

Free, private, serverless decision matrix tool. Evaluate options with weighted scoring, Pugh matrix analysis, weight normalization, and CSV export — 100% in-browser.

Free, private, serverless digital whiteboard with infinite canvas. Draw freehand, add sticky notes, build flowcharts, and export PNG or SVG — 100% in-browser.

Free, private, serverless email signature generator. Create responsive HTML email signatures with 5 professional templates, social media icons, and instant copy — 100% in-browser.

Free, private, serverless flashcard maker. Convert Excel, CSV or text into interactive study flashcards with gamified modes, text-to-speech, and optional AI generation — 100% client-side.

Free, private, serverless Gantt chart maker. Build interactive project timelines, track task progress, customize colors, and export PNG or CSV — 100% in-browser.

Free, private, serverless daily habit tracker with streaks, calendar heatmaps, completion analytics, and JSON backup — 100% in-browser.

Free, private, serverless Kanban board with drag-and-drop task management. Multi-board support, WIP columns, task priority badges, real-time filtering, and JSON backup — 100% in-browser.

Free, private, serverless mind map maker. Create visual mind maps with radial and tree layouts, customizable node colors, collapse/expand branches, and export to PNG, SVG, or JSON — 100% in-browser.

Free, private, serverless in-browser online studio teleprompter with beam-splitter mirror flip, speech-follow voice sync, dual-monitor screen, and customizable pacing.

Free, private, serverless PDF editor. Open, read, annotate, draw, highlight, sign contracts, apply stamps, and save edited PDFs directly in your browser — 100% client-side, zero uploads.

Free, private client-side resume builder with 6 professional ATS-friendly templates. Design, customize, and export high-resolution CVs as PDF directly in browser memory without sign-ups.

Free, private, serverless Scrum burndown chart & velocity studio. Track story points, linear regression sprint completion forecast, scope creep analysis, and SVG/PNG export — 100% in-browser.

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.

Free, private high-precision online stopwatch with centisecond accuracy, split-lap recording, best/worst time statistics, and zero cloud tracking.

Free, private client-side timezone converter. Convert live and custom timestamps across 400+ IANA global cities with automatic Daylight Saving Time (DST) adjustments.

Free, private multi-timezone meeting planner. Find optimal overlapping work hours across 29+ global zones with interactive visual timelines, customizable hours, and zero cloud tracking.

Free, private, serverless Gamepad drift tester & precision cockpit. Test stick drift, 360° circularity error %, polling rate (Hz), and export hardware reports — 100% in-browser.

Free, private, serverless in-browser WhatsApp chat to court-admissible legal PDF converter. Generate Bates-numbered evidence exhibits, PII redactions, and SHA-256 chain-of-custody verification.

Free serverless BMI calculator — calculate your Body Mass Index with metric or imperial units instantly. Visual BMI scale, clinical category classification, and healthy weight range with 100% private in-browser computation.

Free serverless body fat calculator using the validated US Navy circumference method. Calculate body fat percentage, lean body mass, and fat mass instantly with 100% private in-browser computation.

Free calorie calculator to find your exact BMR, TDEE, and daily caloric deficit or surplus for fat loss, muscle gain, or maintenance. 100% private and serverless in-browser tool.

Free heart rate zone calculator using the Karvonen formula and Heart Rate Reserve (HRR). Calculate 5 personalized cardiovascular training zones. 100% private and serverless in-browser tool.

Free ideal weight calculator comparing Devine, Robinson, Miller, and Hamwi formulas with WHO healthy BMI ranges. 100% private and serverless in-browser tool.

Free macro calculator to calculate exact daily grams of protein, carbohydrates, and healthy fats based on caloric targets and fitness goals. 100% private and serverless in-browser tool.

Free pace calculator for runners and cyclists. Calculate running pace, finish time, splits, and distance in km and miles. 100% private and serverless in-browser tool.

Free sleep cycle calculator based on 90-minute REM sleep cycles. Calculate the best bedtime or wake up time without morning grogginess. 100% private and serverless in-browser tool.

Free online water intake calculator. Calculate your daily hydration requirement based on weight, age, activity, and climate with 100% serverless privacy.

Free audio merger and joiner online. Combine multiple MP3, WAV, M4A, OGG, and AAC tracks into one seamless file with custom gaps — 100% in-browser.

Free online audio recorder. Capture microphone audio with real-time spectrum visualizer, pause/resume, uncompressed Opus/WAV download — 100% in-browser.

Free online barcode generator. Create Code 128, Code 39, EAN-13, and UPC barcodes with custom dimensions, bulk batch generation, and PNG export — 100% in-browser.

Free CSS glassmorphism generator online. Create frosted glass UI cards with live preview, backdrop-filter blur, opacity, border shine, and instant CSS export.

Free capacitor charge calculator online. Calculate RC time constant (τ), charging and discharging times, stored electrical energy, charge (Q), and peak current.

Free online certificate generator. Create custom certificates of completion, achievement, appreciation, and diplomas with real-time canvas preview and PNG download.

Free, private, client-side clothing size converter. Convert US, UK, EU, and International apparel sizes for men and women across tops, shirts, pants, and dresses.

Free, private, client-side WCAG 2.1 color contrast checker. Test foreground and background color combinations for AA and AAA accessibility compliance with real-time text previews.

Free concrete calculator for rectangular slabs, footings, and cylindrical columns. Calculate volume in cubic yards, cubic meters, and exact bags needed — 100% client-side, 100% serverless.

Free, private, client-side cookie policy generator. Create legally aligned cookie policies for your website compliant with GDPR, ePrivacy Directive, and CCPA/CPRA.

Free, private, client-side data transfer cost calculator. Estimate and compare cloud egress pricing across AWS, Google Cloud, Microsoft Azure, Cloudflare R2, and DigitalOcean.

Free, private, client-side polyhedral dice roller. Roll D4, D6, D8, D10, D12, D20, D100 with cryptographic randomness, animated 3D rolls, modifiers, and session history.

Free, private, client-side legal disclaimer generator. Create tailored disclaimers for general liability, professional advice, affiliate commissions, and medical content.

Free, private, client-side EULA generator. Create legally enforceable End User License Agreements for desktop software, mobile apps, and SaaS platforms.

Free, private, client-side flooring calculator. Estimate room area, material square footage, waste contingency, box quantities, and total costs for hardwood, laminate, tile, and vinyl.

Free, private, client-side grade calculator. Calculate weighted assignment averages, 4.0 GPA letter grades, and the exact final exam score required to pass.

Free, private, client-side gravel and mulch calculator. Estimate material volume in cubic yards, weight in tons, bag count, truck loads, and cost for any landscaping area.

Free, private, client-side hashtag generator. Create relevant, high-engagement hashtags for Instagram, TikTok, LinkedIn, Twitter/X, and YouTube.

Free, private, client-side IP address converter. Convert IPv4 to binary, hexadecimal, octal, and integer; calculate CIDR subnets, masks, and usable host ranges.

Free, private, client-side photo collage maker. Combine 2 to 12 images into customizable grid layouts with borders, corner rounding, and high-res export.

Free, private, client-side image flip, mirror, and rotate tool. Flip horizontally and vertically, rotate by 90°, 180°, 270°, or arbitrary angles, export PNG/JPG/WebP.

Free, private, client-side invoice generator. Create professional PDF invoices instantly with custom branding, itemized taxes, discounts, and bulk CSV import.

Free, private, client-side keyboard tester. Test every key on your keyboard, detect switch ghosting, measure input latency, and inspect JavaScript keyCodes.

Free, private, client-side LED resistor calculator. Compute exact resistance, nearest E12/E24 standard resistors, wattage dissipation, and color codes.

Free, private, client-side MAC address generator. Create random, locally administered, or vendor-specific MAC addresses in multiple formats with OUI lookup.

Free, private, serverless meeting cost calculator. Track the real-time financial cost of business meetings based on attendee count, average salaries, and duration. Calculate recurring meeting expenses with live ticker, salary presets, and CSV export — 100% client-side in your browser.

Free, private, serverless microphone tester. Test mic input quality with real-time frequency visualizer, decibel peak meter, and latency detection. Diagnose headsets, USB mics, and built-in microphones 100% client-side in your browser.

Free, private, serverless motivational quote generator. Generate inspirational quotes across success, wisdom, leadership, and courage with styled typography cards, one-click clipboard copying, and PNG image export — 100% client-side in your browser.

Free, private, serverless mouse tester. Test left, right, and middle mouse buttons, scroll wheel precision, double-click chattering, and cursor coordinates with real-time visual feedback — 100% client-side in your browser.

Free, private, serverless moving cost estimator. Calculate residential moving expenses based on home size, mileage, labor rates, and professional packing services. Get accurate low-to-high budget ranges 100% client-side in your browser.

Free, private, serverless NDA generator. Create legally structured mutual or one-way non-disclosure agreements with custom disclosure terms, trade secret protections, and jurisdictional clauses — 100% client-side in your browser.

Free, private, serverless PCB trace width calculator. Calculate minimum trace width per IPC-2221, electrical resistance, voltage drop, and power dissipation — 100% client-side in your browser.

Free, private, serverless PDF compressor. Compress PDF documents directly in your browser using lossless object stream restructuring, metadata stripping, and cross-reference optimization — 100% client-side with zero file uploads.

Free, private, serverless PDF password tool. Encrypt PDF documents with military-grade AES password protection or unlock password-secured files — 100% client-side in your browser with zero file uploads.

Free, private, serverless PDF to text extractor. Convert PDF documents to clean, editable plain text with page-by-page separation and character statistics — 100% client-side in your browser with zero file uploads.

Free, private, serverless paper size reference guide and dimension calculator. Lookup ISO 216 A/B/C series, North American Letter/Legal, and convert millimeters to pixels across 72, 150, 300 DPI — 100% client-side in your browser.

Free, private, serverless Pomodoro timer with animated progress ring. Boost productivity with customizable 25/5 focus intervals, audio chime alerts, tab countdowns, and session tracking — 100% client-side in your browser.

Free, private, serverless power factor calculator. Calculate real power (kW), reactive power (kVAR), apparent power (kVA), phase angle, and capacitor sizing for power factor correction — 100% client-side.

Free, private, serverless QR code generator. Create high-resolution custom QR codes for URLs, Wi-Fi, vCards, text, and emails. 100% in-browser generation with instant PNG download.

Free, private, serverless random number generator. Generate true uniform and cryptographically strong random integers, decimals, and sequences with custom bounds — 100% client-side.

Free, private, serverless receipt generator. Create professional custom sales receipts with itemized rows, tax calculations, discounts, and payment methods — 100% in-browser.

Free, private, serverless recipe scaler. Multiply or divide ingredient quantities by servings with smart fraction conversions and culinary volume/weight units — 100% in-browser.

Free, private, serverless resistor color code calculator. Decode 4-band, 5-band, and 6-band resistors with visual stripe previews, tolerance limits, and temperature coefficients — 100% in-browser.

Free, private, serverless ring size converter. Convert between US, UK (British), European (ISO 8653), Japanese, and internal diameter/circumference millimeters — 100% in-browser.

Free, private, serverless roofing calculator. Calculate sloped roof surface area, roofing squares, shingle bundles, underlayment rolls, and materials cost for gable, hip, and shed roofs — 100% in-browser.

Free, private, serverless SVG optimizer. Remove XML bloat, strip editor namespaces (Inkscape/Illustrator), clean metadata, and minify vector graphics — 100% in-browser.

Free, private, serverless shoe size converter. Convert between US, UK, European (Paris Points), Japanese, and Mondopoint centimeters for men, women, and children — 100% in-browser.

Free, private, serverless SNR calculator. Calculate signal-to-noise ratio in decibels (dB) from power or voltage, Shannon channel capacity, and spectral efficiency — 100% in-browser.

Free, private, serverless terms of service generator. Create custom, legally structured Terms of Service agreements for websites, SaaS, and mobile apps — 100% in-browser.

Free, private, serverless typing speed test. Benchmark words per minute (WPM), characters per minute (CPM), keystroke accuracy, and error heatmaps — 100% in-browser.

Free unit price calculator to compare prices across different package sizes, weights, and volumes to find the best deal — 100% client-side, 100% serverless.

Free, private, serverless username generator. Create creative, memorable usernames, cool gaming tags, and professional handles with zero tracking — 100% in-browser.

Free, private, serverless video compressor. Reduce MP4, WebM, and MOV video file sizes in your browser with zero quality degradation — 100% in-browser.

Free, private, serverless video resizer. Scale videos to 4K, 1080p, 720p, 9:16 TikTok, 1:1 Instagram, or custom dimensions — 100% in-browser.

Free, private, serverless video thumbnail extractor. Capture crisp still frames at any timestamp or batch extract intervals — 100% in-browser.

Free, private, serverless video trimmer. Cut and trim video files with frame accuracy and lossless stream copy — 100% in-browser.

Free, private, serverless voltage divider calculator. Compute output voltage (Vout), circuit current, component power dissipation, and load resistance effects — 100% in-browser.

Free, private, serverless webcam tester. Test your webcam video stream, verify real FPS, detect hardware resolution, and take test snapshots — 100% in-browser.

Free, private, serverless wire gauge calculator. Find the right AWG wire size for current, voltage drop, and distance — copper and aluminum — 100% in-browser.

Free, private, serverless word scrambler and anagram maker. Jumble letters within words, shuffle sentences, or create readable typoglycemia puzzles — 100% in-browser.

Free work days calculator to count business days between two dates, excluding weekends, calendar days, and weeks — 100% client-side, 100% serverless.

Free, private, serverless decibel calculator. Convert power and voltage ratios to dB, sum incoherent sound sources, and explore SPL acoustics — 100% in-browser.