snaptools.click/json
JSON Formatter & Validator
Paste messy JSON on the left, get clean readable code on the right.
Input — paste your JSON here
Output — formatted result
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Frequently asked questions
JSON (JavaScript Object Notation) is a lightweight data format used by APIs and web applications. Formatted JSON adds indentation and line breaks to make it human-readable. Minified JSON removes all whitespace to reduce file size for transmission.
Paste your JSON and click Format. If there is a syntax error, the validator will tell you exactly where the problem is. Common errors include missing commas, unclosed brackets, or unquoted keys.
Formatting adds indentation and line breaks so humans can read the structure easily. Minifying removes all unnecessary whitespace to produce the smallest possible file — useful for APIs and production code.
No. All formatting and validation uses the browser built-in JSON.parse() function. Your data never leaves your device.
Yes, up to a reasonable size depending on your browser and device memory. For very large files (over 10MB) performance may vary. There are no artificial limits imposed by the tool.
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