Developer Tools
JSON Formatter
Format, validate and minify JSON instantly.
Free foreverRuns in your browserNo sign-up
About the JSON Formatter
Format, validate and minify JSON to make it readable or compact, great for debugging API responses, config files and logs.
Invalid JSON is caught immediately with the exact parser error, so you can pinpoint and fix problems fast.
Formatting makes large payloads easier to scan and diff, while minifying removes whitespace to reduce size for storage or transfer.
Key features
- Beautify JSON with clean indentation
- Minify JSON down to a single line
- Instant validation with clear errors
- Processed locally - safe for sensitive data
How to use
- 1Paste JSON into the input.
- 2Click Format to beautify or Minify to compact. Errors show inline.
Frequently asked questions
- Does it validate JSON too?
- Yes. If the JSON is invalid, the exact parser error is shown so you can fix it quickly.
- What is the difference between Format and Minify?
- Formatting adds indentation and line breaks for readability; minifying removes all unnecessary whitespace to make the JSON as small as possible.
- Is my JSON sent to a server?
- No. All formatting, validation and minifying happen locally in your browser, so it is safe for sensitive data.