JSON Formatter

Format, minify, and validate JSON in your browser. No upload required.

JSON input

Output

How to use

Paste JSON in the input box. Click Format for readable output, Minify for compact text, or Validate to check syntax.

FAQ

Is my JSON sent to a server?: No. Parsing happens locally in your browser.
Can I format large files?: Very large payloads may slow the tab; there is no fixed limit.
Does it fix trailing commas?: No. Invalid JSON must be edited manually.