Does this validate data types and required fields?

No. This tool validates JSON syntax only. Use schema validation for type and required-field enforcement.

Can I validate multiple JSON documents?

Validate one document at a time. Wrap multiple objects in an array when needed.

Is my data sent to a server?

No. Validation is done locally in your browser.

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🧩 JSON Validator

Validate JSON strings instantly, highlight syntax errors, and confirm formatting before you ship configs, APIs, or data files for production and debugging.

JSON Validator

Validate JSON syntax, pinpoint parse errors by line and column, and generate a reusable validation report.

Auto validate while typing

How to use this tool

Paste JSON or upload a .json file.
Validate once or enable auto-validate to catch issues while editing.
Pretty print or minify valid payloads, then export a validation report.

Quick checks

Catch syntax errors before sending payloads to APIs.
Confirm exported settings files are well-formed before commits.
Use report export to share exact error coordinates with teammates.

Troubleshooting tips

Look for trailing commas or mismatched quotes in invalid payloads.
Pretty print can help surface nesting mistakes quickly.
For schema-level type checks, use the JSON Schema Validator tool.

FAQ

Does this validate data types and required fields?: No. This tool validates JSON syntax only. Use schema validation for type and required-field enforcement.
Can I validate multiple JSON documents?: Validate one document at a time. Wrap multiple objects in an array when needed.
Is my data sent to a server?: No. Validation is done locally in your browser.