JSON Format & Validate
Format, validate, minify, and auto-fix JSON data with syntax highlighting
How to Use
Paste your JSON into the input box on the left. Click "Format" to beautify it with proper indentation, "Minify" to compress it, or "Auto-fix" to repair common syntax errors. The formatted output appears on the right with syntax highlighting. Click "Copy" to copy the result to your clipboard.
Features
- Format and beautify JSON with customizable indentation (2 or 4 spaces)
- Validate JSON and get clear error messages with line numbers
- Minify JSON to reduce file size
- Auto-fix common JSON errors like trailing commas and single quotes
- Syntax highlighting for easy reading
Frequently Asked Questions
What is JSON formatting?
JSON formatting (also called JSON beautifying or pretty-printing) adds proper indentation and line breaks to compressed JSON data, making it human-readable. This is essential for debugging APIs, reading config files, and working with JSON data.
Is my JSON data safe?
Yes. RawDev processes everything locally in your browser using JavaScript. Your JSON data is never sent to any server. You can verify this by checking your browser's Network tab — no data is transmitted.
Can this fix invalid JSON?
Yes. The Auto-fix feature can repair common issues like trailing commas, single quotes instead of double quotes, and unquoted property names. However, severely malformed data may still require manual correction.
What is the maximum JSON size supported?
Since everything runs in your browser, the limit depends on your device's available memory. Most modern devices can handle JSON files up to 10-50MB without issues.