Every tool, organised by purpose.
Pick a toolbox, drill into a category, or search across the whole catalog — everything runs locally in your browser.
Spotlight
Top toolboxes right now
Converters
Units, currency, time zones, and more.
Text Tools
Count, transform, compare, clean.
Encoders & Decoders
Base64, URL, JWT, hashes.
Developer Tools
Regex, cron, CSS, SVG, markdown.
Generators
QR codes, passwords, IDs, fake data.
Full catalog
Explore every category
13 of 13 shown
Text Tools
Count, transform, compare, clean.
Word and character counters, case converters, lorem ipsum, diff checkers, sorters and dozens more text utilities that run instantly in your browser.
- Word Counter
- Remove Line Breaks
- Remove Extra Spaces
Converters
Units, currency, time zones, and more.
Convert between units of length, weight, temperature, area, volume, speed, data, fuel economy and currencies — with sensible defaults and accurate formulas.
- Currency Converter
- Unit Converter
- Number Base Converter
Encoders & Decoders
Base64, URL, JWT, hashes.
Encode and decode Base64, URLs, HTML entities and JWTs. Generate MD5, SHA-1, SHA-256 and SHA-512 hashes — all client-side.
- GZip Compress & Decompress
- Base64 Encoder
- JWT Decoder
Formatters & Beautifiers
Pretty-print, validate, minify.
Format and validate JSON, XML, YAML, SQL, HTML, CSS and JavaScript. Compare side-by-side, copy results, download files.
- JSON Formatter
- CSS Preprocessor Compiler
- SQL Formatter
Generators
QR codes, passwords, IDs, fake data.
Generate QR codes, passwords, UUIDs, ULIDs, fake data, favicons, gradients, signatures and more in seconds.
- QR Code Generator
- Password Generator
- UUID Generator
Image Tools
Compress, resize, convert formats.
Compress, resize, crop, rotate, flip and convert images between PNG, JPG, WEBP and AVIF — all locally without uploading.
- Image Compressor
- Image Resizer
- Image Format Converter
PDF Tools
Merge, split, compress, rotate.
Merge, split, compress, rotate and watermark PDFs without uploading them to a server. Powered by pdf-lib in your browser.
- PDF Merger
- PDF Splitter
- PDF Compressor
Color Tools
Picker, palette, contrast, gradient.
Pick colors, build palettes, check WCAG contrast, generate gradients and convert between HEX, RGB, HSL, HSV and CMYK.
- Color Picker
- Color Palette Generator
- WCAG Contrast Checker
Developer Tools
Regex, cron, CSS, SVG, markdown.
Test regular expressions, build cron schedules, generate CSS clip paths, gradients and shadows, draw SVG waves and blobs.
- Regex Tester
- Markdown to HTML
- JSON to Code
Time Tools
Stopwatch, timer, pomodoro, world clock.
Stopwatches, countdown timers, pomodoro sessions, world clocks and date difference calculators that just work.
- Online Stopwatch
- Pomodoro Timer
- Countdown Timer
Productivity
Notepad, whiteboard, dice, decisions.
Quick notepad, markdown editor, whiteboard, typing test, decision wheel, dice roller and other instant productivity utilities.
- Online Notepad
- Markdown Editor
- Dice Roller
Data Tools
Diff, view and convert structured formats.
Compare JSON and YAML, view TOML, and convert between structured serialization formats — all in your browser.
- JSON Diff
- YAML Diff
- TOML Viewer
Network Tools
API clients, WebSocket, CIDR and more.
Test REST APIs, WebSocket and SSE connections, calculate CIDR ranges, and invoke bulk HTTP requests from your browser.
- API Client
- CIDR Calculator
- WebSocket Tester
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