JSON Formatter
Format, validate, and copy readable JSON to debug APIs and configs in your browser.
Click Format to see the result.
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How to use the JSON formatter
- Paste your raw JSON in the input panel, even on a single line.
- Click "Format" to indent and validate syntax.
- Copy the readable formatted JSON or fix errors reported by the validator.
What is it for?
The JSON formatter turns compact API responses into readable indented text. Backend, frontend, and DevOps teams use it daily when debugging integrations, Kubernetes configs, or database exports.
Syntax validation catches missing commas, unclosed quotes, or unbalanced braces before deploying configs that could take services down.
It is a free JSON formatter in the browser: paste, format, and copy without extensions or uploading confidential payloads to third parties.
Frequently asked questions
Does the JSON formatter change data values?
It only changes formatting and indentation when JSON is valid. It does not alter keys or values in the original object.
Why does it say invalid JSON?
Check trailing commas, single quotes instead of double, unquoted keys, or special characters that need escaping.
Is there a size limit for formatting JSON?
Limits depend on browser memory. Very large JSON may slow the tab; for huge files use specialized local tools.
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