Fast, free, private tools for developers.
67 browser-based utilities — format JSON, generate passwords, decode JWTs, build color palettes, and more. No accounts. No tracking.
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JSON Formatter
Beautify and format JSON with configurable indentation.
Base64 Encode / Decode
Encode text or files to Base64 and decode them back.
JWT Decoder
Decode and inspect JWT header and payload.
Password Generator
Generate strong random passwords with custom rules.
UUID Generator
Generate v4 UUIDs in bulk — up to 100 at a time.
Regex Tester
Test regular expressions with live match highlighting.
Color Converter
Convert between HEX, RGB, HSL, and CMYK.
CSS Gradient Generator
Build CSS gradients visually and copy the code.
Categories
Browse by type
JSON Tools
11 toolsFormat, validate, convert, and explore JSON data.
Text Tools
11 toolsCount, transform, compare, and manipulate text.
Crypto & Auth
9 toolsHashes, tokens, passwords, and encoding utilities.
CSS & Design
10 toolsColors, gradients, shadows, and visual generators.
Converters
17 toolsSwitch between formats, bases, units, and encodings.
Developer Tools
41 toolsRegex, cron, HTTP references, and everyday dev helpers.
Ad-tech & Video
8 toolsVAST, VMAP, consent strings, OpenRTB, ads.txt, HLS playlists.
Privacy first
Every tool runs in your browser. We never upload, log, or transmit your data.
Instant results
No network round-trips. Input is processed as you type.
Beautifully simple
Focused, keyboard-friendly interfaces designed for everyday dev work.