JSON Validator
Check whether a JSON string is valid and see clear error messages.
How to use it
- Paste JSON
- Click Validate
- Read the success or error message
Features
- Clear error text
- Line-friendly feedback
- Private — local only
Common questions
Does valid JSON mean my API is correct?
No — it only checks JSON syntax, not your business rules.
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Use Tool →Related guides
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A plain-English explanation of JSON for APIs, configs, and debugging.
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