Generate and sign JSON Web Tokens (JWT) in browser.
✓ Runs entirely in your browser — no upload to any server
Format and beautify JSON data with syntax highlighting.
Validate JSON syntax and find errors instantly.
Minify JSON to reduce file size by removing whitespace.
Convert between YAML and JSON formats seamlessly.
Encode text or files to Base64 string.
Decode Base64 string back to original text or file.
Encode special characters for safe URL transmission.
Decode URL-encoded strings back to readable text.