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🧩 JSON Validator
Validate JSON strings instantly and catch syntax errors fast.
JSON Validator
Check if your JSON is valid. Paste or type JSON below and click validate.
How to use this tool
- Paste JSON into the text area.
- Click Validate JSON to run it through the built-in parser.
- Copy the snippet or reset the form for another payload.
Quick checks
- Catch syntax errors before sending payloads to an API endpoint.
- Confirm exported settings files are well-formed before committing them.
- Sanity-check JSON strings copied from logs or chat.
Troubleshooting tips
- Look for trailing commas or mismatched quotes—common causes of invalid JSON.
- Pretty-print the data in the JSON Formatter for easier manual inspection.
- If you need schema validation, jump to the JSON Schema Validator tool.
FAQ
- Does this check data types?
- No. It only verifies structural validity. Use schemas to enforce types and required fields.
- Can I validate multiple JSON documents at once?
- Validate one at a time. Wrap them in an array if you want to check multiple objects together.
- Is the content stored anywhere?
- No. Validation uses the browser's JSON parser locally.
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