Format, validate, and minify raw JSON quickly in the browser.
Paste large JSON, validate it, then format or minify without uploading.
Format, validate, and minify raw JSON quickly in the browser. It is useful for debugging API responses, cleaning configuration snippets, validating webhook payloads, and making minified JSON readable. Key capabilities on this page include pretty print, minify output, syntax validation.
Paste only the JSON you need to inspect. Remove passwords, access tokens, and customer data before formatting examples for tickets or documentation.
Paste JSON, choose Format to pretty-print it or Minify to compact it, read any syntax error, then copy the cleaned output when it validates.
If parsing fails, check for missing quotes, trailing commas, single quotes, comments, or copied log prefixes before the opening brace.
This tool runs in your browser, so the input is processed locally on your device. The formatter expects valid JSON, not JavaScript objects or JSON5. Extremely large payloads may be slower depending on browser memory.
After using JSON Formatter, nearby workflows include Base64 Encoder/Decoder, JWT Decoder, SQL Formatter. These related pages help you continue the same job without searching through unrelated tools.
No. The formatter runs in the browser, so pasted JSON stays on the device unless you choose to copy it elsewhere.
Yes. The tool supports both pretty formatting and compact minified output.
Yes. Invalid input returns a readable parse error so you can fix the syntax quickly.
