Format (with indentation), minify and validate JSON. If there's a syntax error, it points it out. Everything runs in your browser.
This JSON formatter and validatorbeautifies, minifies and checks any JSON in one place. Paste your data and format it with clean indentation, or minify it down to a single line.
Readable or compact, your choice
Invalid JSON is flagged with the exact parser error so you can fix it fast; valid JSON is confirmed. Everything runs locally in your browser — no upload, no tracking.
FAQ
What's the difference between format and minify?
Format adds indentation and line breaks so JSON is easy to read; minify strips all unnecessary whitespace to make it as small as possible for transfer.
Does it validate my JSON?
Yes. If the JSON has a syntax error, the tool shows the parser's message so you can find and fix it. Valid JSON is marked as such.
Is my data sent anywhere?
No. Parsing and formatting happen entirely in your browser, so your JSON never leaves your device.
