Free JSON Formatter & Validator
Format, validate, and beautify JSON data. Tree view, minify, error highlighting. Free, in your browser.
Frequently Asked Questions
What is JSON?
JSON (JavaScript Object Notation) is a lightweight data format used by APIs, config files, and databases. It's human-readable and easy for machines to parse.
Does this send my data anywhere?
No. Parsing happens entirely in your browser.
What's the difference between format and minify?
Format adds whitespace and indentation for readability. Minify removes all unnecessary whitespace to reduce file size, ideal for production APIs.
Why does my JSON fail to parse?
Common issues: missing quotes around keys, trailing commas, unescaped characters in strings. The error message points to the location.
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