About JSONFig

JSONFig is a free online JSON formatter and validator for developers who need to read, clean up and convert JSON quickly.

What you can do on JSONFig

• Format – Pretty-print JSON with 2-space, 4-space or tab indentation.
• Minify – Strip whitespace to produce compact JSON for production use.
• Validate – Check syntax as you type and pinpoint where an error is.
• Tree View – Explore nested data as an expandable tree with type badges and copyable paths.
• JSON to CSV, XML and YAML – Convert JSON into other data formats with one click.

Open the JSON Formatter & Validator

How it works

• Free to use: no account, sign-up or payment is required.
• JSON you paste or upload is parsed, formatted, validated and converted locally in your browser. It is not sent to our servers.
• Works in modern desktop and mobile browsers, with nothing to install.
• The interface is available in English and Chinese.
• The site is supported by advertising, which keeps every tool free.

Who runs JSONFig

JSONFig is an independent project run by a solo developer. The goal is simple: fast, uncluttered tools that respect your privacy, open instantly and never ask you to register.

Why we built it

API responses and config files often arrive as one unreadable line, and pasting them into random websites can leak tokens or customer data. JSONFig keeps everything inside the browser tab so you can inspect and convert JSON safely, even when it contains sensitive values.

Feedback

If something does not work as expected, or you would like a new option, let us know via the Contact page. Every message is read.