Fast, free, and easy-to-use online tools for developers. Format JSON, decode JWTs, generate UUIDs, and more — all processed locally in your browser.
Format, validate, and minify JSON data with syntax highlighting and error detection.
Decode and inspect JSON Web Tokens. View header, payload, and expiration info.
Generate cryptographically secure UUID v4 values. Single or bulk generation.
Encode text to Base64 or decode Base64 back to plain text. Supports UTF-8.
Format and beautify SQL queries with configurable indentation and keyword casing.
All tools run entirely in your browser. No server round-trips, no waiting.
Your data never leaves your device. We never log, store, or transmit your input.
Core tools are free forever. No account required to get started.