JSON
JSON Formatter
Format and beautify JSON with clear errors and no uploads.
What is JSON Formatter?
Paste a JSON document to make nested data readable with consistent two-space indentation. Formatting happens entirely in your browser, so sensitive payloads never leave your device.
How to use JSON Formatter
- Paste or type your input into the editor.
- Use the tool action to process your data in the browser.
- Review the output, then copy or download it if needed.
Key features
- Private browser-based processing.
- No account or login required.
- Works without uploading your data.
- Fast results for common developer tasks.
Frequently asked questions
Is my JSON uploaded anywhere?
No. Formatting runs in your browser using the built-in JSON parser. No JSON is sent to a server.
Why won’t my JSON format?
JSON requires double-quoted property names and strings, and does not allow trailing commas or comments. The error message points to the parser issue.