How it works
Paste your JSON and choose an action. Beautify re-indents it into a clean, readable layout using the indentation you pick; Minify strips all unnecessary whitespace to produce the smallest valid single-line version; Validate simply checks whether the syntax is correct. If anything is wrong, you'll see the parser's message and, where the browser provides it, the line and column of the error so you can find it quickly. All processing happens locally in your browser — your data is never uploaded.
JSON Formatter & Validator
Beautify, minify, and validate JSON — privately, in your browser.
FAQ
What does the JSON formatter do?
It pretty-prints JSON with consistent indentation so it's easy to read, minifies it back to a compact single line, and validates that the syntax is correct — all in one place.
How does validation report errors?
If the JSON is invalid, the tool shows the parser's error message and, where possible, the line and column where the problem was found, so you can jump straight to the mistake.
Can I choose the indentation?
Yes. You can beautify with 2 spaces, 4 spaces, or tabs, depending on your project's style.
Is my JSON uploaded anywhere?
No. Parsing and formatting happen entirely in your browser. Nothing you paste is transmitted to a server or stored.
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