Developer Utility Tools

A beautiful collection of free online tools for developers. Fast, private, and free — no account needed.

formatting

Format, validate, and minify JSON data. Paste any JSON and get beautifully formatted output instantly.

Decode JSON Web Tokens and inspect their header and payload. Debug JWTs quickly without sending data anywhere.

Generate random UUID v4 identifiers. Supports multiple formats and bulk generation up to 25 at a time.

Generate strong, secure passwords with customizable length and character sets. Includes strength indicator.

Encode text to Base64 or decode Base64 back to text. Fast, client-side encoding with instant results.

⚡

All tools run in your browser. No server round-trips.

🔒

Your data never leaves your device. Nothing is stored.

🎨

Polished, minimal interface with dark mode support.