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JSON Validator
Validate JSON syntax instantly, pinpoint parse errors, and format payloads for reliable API and config workflows.
How to use this tool
- Paste JSON or upload a `.json` file.
- Validate on demand or enable auto-validate while editing.
- Pretty print/minify valid payloads and export validation reports.
Quick checks
- Catch syntax errors before sending payloads to APIs.
- Verify exported configs before committing changes.
- Share exact error coordinates with teammates via report export.
Troubleshooting
- Look for trailing commas and quote mismatches first.
- Use pretty print to expose structural nesting issues.
- Use schema validators separately for type/required-field checks.
FAQ
- Does this validate schema constraints?
- No. This tool validates JSON syntax only.
- Can I validate multiple documents together?
- Validate one payload at a time, or wrap multiple objects in an array.
- Is any JSON sent to a server?
- No. Validation runs locally in-browser.
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