100% localNew
Use this toolJSON formatter
Paste JSON to format or minify it and immediately detect syntax errors.
- 100% local
- Instant
- Free
- No account
- Works offline
- Clipboard
Valid JSONInvalid JSON:
Format, minify and validate JSON to make it easier to read or more compact.
Guide
How to use this tool
- 1
Paste the JSON
Add a JSON object or array.
- 2
Choose an action
Format, minify or validate the content.
- 3
Fix if needed
Use the error message to locate invalid syntax.
Tips and best practices
- Work on a copy when your data is important.
- Review the result before reusing it in another application.
- Processing takes place directly in your browser.
Frequently asked questions
Does formatting change the data?
No. It only changes whitespace and line breaks, not values.
Is my data uploaded?
No. Processing happens locally in your browser.
Can I use this tool for free?
Yes. The tool is free and requires no account.
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