About the JSON Formatter
Paste JSON and beautify it with clean indentation, or minify it to a single compact line. Invalid JSON is flagged inline with the exact line and column so you can fix it fast.
Formatting happens entirely in your browser, which makes it safe for API responses, config files and other sensitive data — nothing is uploaded.
Features
- Beautify (pretty-print) JSON with indentation
- Minify JSON to a single line
- Inline validation with line and column errors
- Copy the result to your clipboard
- Runs entirely in your browser
- Free with no sign-up and privacy-friendly
How to format JSON
- Paste your JSON into the editor.
- Click Format to pretty-print, or Minify to compress it.
- Fix any inline errors that are flagged.
- Click Copy to grab the formatted result.
Frequently asked questions
What's the difference between format and minify?
Format adds indentation and line breaks for readability; minify removes all whitespace to make the smallest single-line output.
What happens with invalid JSON?
The tool shows the error message with the line and column so you can locate the problem quickly.
Is my JSON uploaded?
No. All formatting happens locally in your browser.
Is it free?
Yes, completely free with no sign-up.