JSON Formatter
Beautify, minify, and validate JSON data instantly. Free online JSON formatter with no data collection.
Input JSON
Output
Formatted JSON will appear here...About this tool
Paste JSON in and get it beautified, minified, or validated, with a parse error pointed at the exact line and character that broke it rather than a generic "invalid JSON."
When you’d use it
- Debugging a malformed API response before you paste it into code.
- Minifying a config file before committing it, or beautifying one someone else minified.
- Sharing a working JSON example with a teammate through the generated link.
Frequently asked questions
- Does this tool send my JSON anywhere?
- No, parsing and formatting happen entirely in your browser with the standard JSON.parse, so nothing is uploaded or logged.
- Can the Fix button repair any broken JSON?
- It handles common mistakes (trailing commas, unquoted keys, single quotes). If the structure itself is wrong, it can't guess what you meant, and you'll still need to fix that by hand.
- What does the Share button actually do?
- It encodes your current JSON into the page URL so you can send a working example to someone else. Anything in the JSON becomes part of that URL, so don't use it for anything sensitive.
Free developer tools by Clocktower and Associates. All processing happens in your browser: no data is collected or transmitted.