Essential online tools for developers. JSON formatter, Base64 encoder, regex tester, API tester, JWT decoder, SQL formatter and more. Free, fast, and private.
Format, validate, and beautify JSON data. Make JSON readable with syntax highlighting and error detection.
Encode and decode text to/from Base64 format. Convert data for safe transmission and storage.
Test and debug regular expressions in real-time. Visualize matches with highlighting and detailed results.
Test REST APIs with GET, POST, PUT, DELETE requests. Inspect responses and headers instantly.
Decode and verify JSON Web Tokens. View header, payload, and signature information securely.
Format and beautify SQL queries. Make complex queries readable with proper indentation and syntax highlighting.
Convert text to different cases: lowercase, UPPERCASE, camelCase, PascalCase, snake_case, and more.
All tools run instantly in your browser. No server delays, no waiting.
Your data never leaves your browser. No uploads, no storage, complete privacy.
All tools are completely free with no limits, trials, or paywalls.