Free · Open Source · Runs Locally
The Ultimate Developer Stack
Lightweight, browser-based tools for developers. No signup, no upload, no tracking — everything runs in your browser.
Popular tools
Formatter
JSON Formatter
Beautify, minify, validate and sort JSON instantly in your browser.
Encoder / Decoder
Base64 Encoder / Decoder
Encode text or files to Base64, or decode Base64 strings back to plain text.
Generator
UUID Generator
Generate cryptographically secure UUID v4 identifiers in bulk.
Tester
Regex Tester
Test regular expressions with real-time match highlighting and group capture breakdown.