JSON Formatter & Validator
Format, validate and minify JSON with syntax highlighting.
Paste messy API responses and get them beautified with proper indentation — or minified for production. Validation pinpoints the exact line of trailing commas, missing quotes and other classic JSON mistakes.
How to use the json formatter & validator
- Paste your JSON.
- Format, minify or validate.
- Copy the clean result.
JSON Formatter & Validator — FAQs
Why is my JSON invalid?
The usual suspects: trailing commas, single quotes instead of double, unquoted keys, or comments. The validator points at the exact line.
Format vs minify?
Format (beautify) adds indentation for humans; minify strips all whitespace for machines — smaller payloads, faster APIs.
What’s the difference between JSON and JavaScript objects?
JSON is stricter: double quotes only, no functions, no comments, no trailing commas. Every JSON is valid JS, but not vice versa.
Is my data uploaded?
No — formatting happens locally. Safe even for API responses with tokens (though scrub secrets anyway).
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