JSON Beautifier — Pretty-Print JSON Online
Beautify and pretty-print minified JSON with proper indentation. Make compressed API responses readable. Free online JSON beautifier.
Turn unreadable minified JSON into clean, properly indented code. Perfect for making sense of compressed API responses, config files, and database exports. Choose 2-space or 4-space indentation.
Input JSON
Output
🔒100% Private — Your files never leave your device. All processing runs locally in your browser.
How It Works
Paste your JSON into the input panel, then click Format to pretty-print it or Minify to compress it. Invalid JSON shows a detailed error message.
The formatter uses the browser's native JSON.parse() for validation and JSON.stringify() with configurable indentation for formatting. This ensures 100% spec-compliant parsing — if something is invalid JSON, you'll know exactly where and why.
Features
- ✓Format with 2 or 4 space indentation
- ✓Minify to single line
- ✓Validate JSON and show errors
- ✓Copy formatted output
- ✓Monospace code view
Frequently Asked Questions
JSON beautifying (or pretty-printing) adds proper indentation and line breaks to compressed JSON, making it human-readable while keeping the data identical.