The developer toolkit that never leaves your browser.
Formatters, encoders, generators and text utilities — all in one place. Zero tracking, zero server roundtrips, zero JavaScript bloat. Powered by Astro.
- Tools
- 20
- KB shipped
- ~0
- Server calls
- 0
All tools
Pick a tool. Get to work.
Every tool below runs entirely in your browser. Your code, your data, your tokens — none of it ever touches a server.
Formatters
8JSON Formatter
Beautify, validate and minify JSON with Prettier.
JavaScript Formatter
Format and prettify JavaScript code with Prettier.
CSS Formatter
Beautify or compress CSS stylesheets with Prettier.
HTML Formatter
Pretty-print HTML with proper indentation.
XML Formatter
Pretty-print and validate XML documents.
SQL Formatter
Format SQL queries in 12+ dialects with sql-formatter.
YAML Formatter
Validate and prettify YAML config files.
Markdown Formatter
Normalize and prettify Markdown documents.
Encoders & Decoders
4Base64 Encoder / Decoder
Encode text to Base64 or decode it back. Unicode-safe.
URL Encoder / Decoder
Percent-encode or decode URLs and query parameters.
JWT Decoder
Decode JSON Web Tokens and inspect header & payload.
HTML Entity Encoder
Escape or unescape HTML entities (&, <, >, etc.).
Generators
5UUID Generator
Generate RFC 4122 v4 UUIDs in bulk.
Hash Generator
Compute SHA-1, SHA-256, SHA-384, SHA-512 hashes.
QR Code Generator
Generate downloadable QR codes for any text or URL.
Color Converter
Convert between HEX, RGB, HSL and CSS names.
Cron Expression Parser
Translate cron expressions into human-readable English.
Private by design
All processing happens in your browser. We never receive, log, or store any input you paste into a tool. There is no backend.
Fast by default
Built on Astro, which ships zero JavaScript by default. Pages load instantly on any connection. The only JS that loads is what a specific tool actually needs.
Free forever
Every tool is free with no signup, no rate limits, no upsell. Ads keep the lights on — that's it. No data ever sold.