Essential utilities built for developers — format, validate, encode, decode, and generate data directly in your browser. No installation, no server uploads, no sign-up required.
Whether you're debugging API responses, formatting database queries, or securing your application, these free developer tools handle the repetitive work so you can stay focused on building. Every tool runs entirely client-side for maximum privacy.
The JSON Formatter instantly beautifies and validates nested JSON of any depth. The SQL Formatter turns dense one-liner queries into readable, indented SQL. The CSS Minifier strips whitespace and comments for production-ready stylesheets — or pretty-prints minified CSS for readability.
Security-focused tools include a JWT Decoder (inspect claims and check expiry without any server call), a Hash Generator supporting MD5, SHA-1, SHA-256, and SHA-512, and a Base64 Encoder / Decoder for quick data encoding tasks. The Regex Tester highlights matches in real time as you type, making expression building intuitive and fast.
Utility tools round out the category: Cron Job Generator converts expressions to plain English and vice versa, Markdown Preview renders GitHub-Flavored Markdown instantly, and converters for JSON↔CSV and XML↔JSON make data transformation a one-click operation.