Free Tool
JSON Formatter & Validator
Format, beautify, minify, and validate JSON instantly. Spot errors, clean up structure, and copy the result. Free, private, runs in your browser. No signup.
Result
Why It Matters
Clean, Readable, Valid JSON
JSON is the standard format for data exchanged between websites, APIs, and apps — but raw JSON is often minified into one unreadable line, or contains errors that are hard to spot by eye.
This tool formats JSON into clean, indented, readable structure, or minifies it back down for production. It also validates as it goes, pointing out exactly where any syntax error is so you can fix it fast.
FAQ
Questions About This Tool
It adds proper indentation and line breaks so the structure is easy to read. Minifying does the opposite — stripping whitespace to make the file as small as possible.
Yes. If your JSON has a syntax error, the tool tells you what and where the problem is, so you can correct it quickly.
Yes. Everything runs in your browser — your data is never uploaded or stored anywhere.
Minify JSON for production use, such as API responses or config files, where smaller size means faster loading. Use formatted JSON while reading or debugging.
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