Guide
JSON Formatter online
Format and validate JSON when API responses, config files, logs, or copied snippets are hard to read. Paste JSON, beautify it, and quickly spot syntax errors.
developer tool
JSON Formatter
Beautify, validate and minify JSON directly in your browser.
How to use JSON Formatter
Paste JSON
Add raw JSON from an API response, config file, or code snippet.
Format and validate
Run the formatter to indent valid JSON or show an error for invalid JSON.
Use the cleaned output
Copy the formatted JSON from the output area for debugging, sharing, or documentation.
Common uses for JSON Formatter
- API response debugging
- Config file review
- Webhook payload inspection
- Developer documentation
Why use this developer tool?
- Make minified JSON easier to read.
- Check whether a JSON snippet is valid.
- Clean API responses before debugging.
- Format JSON in the browser without sending files through a backend.
JSON Formatter FAQ
What happens if my JSON is invalid?
The tool shows an invalid JSON message instead of formatted output.
Does this change the meaning of the JSON?
No. Formatting changes spacing and indentation, not the data.
Can I format API responses?
Yes. Paste the JSON response into the input area and run the formatter.