JSON Formatter & Validator
Format, beautify, minify, validate, and inspect JSON with syntax error detection.
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Valid JSON Syntax
How to Use JSON Formatter & Validator
1
Paste JSON
Paste raw, minified, or unformatted JSON code.
2
Format or minify
Click "Beautify (2 Spaces)", "Beautify (4 Spaces)", or "Minify".
3
Copy or download
Copy the valid formatted JSON or inspect syntax error lines.
Key Benefits
- Clear error message and line indicator on invalid JSON syntax
- 100% private: API keys, tokens, and sensitive payloads never leave your computer
- Instant minification and beautification
Browser & Hardware Notes
- Extremely large JSON payloads (>50MB) may take a moment to format.
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Frequently Asked Questions about JSON Formatter & Validator
Yes! SafeWebUtil processes everything locally in JavaScript memory with zero network requests.