Format, validate, and minify JSON data with syntax highlighting
Formatted JSON will appear here
Encode and decode Base64 strings
Generate and validate UUIDs (v4)
Test regular expressions with real-time matching
Generate MD5, SHA-1, SHA-256, SHA-384, SHA-512 hashes
JSON Formatter is a free online tool for formatting, validating, and minifying JSON data. Paste messy or minified JSON and instantly get beautifully formatted output with proper indentation. The tool also validates your JSON and shows helpful error messages if the syntax is invalid. Additional features include JSON minification for reducing file size, and statistics showing the number of keys, nesting depth, and data size. Perfect for developers working with APIs, configuration files, or data exchange. All processing happens in your browser.