When to use JSON Validator

Confirming payloads before sending
Debugging broken config paste-ins
Teaching strict JSON rules

Example

Input

{"ok":true}

Output

Valid JSON syntax (schema not checked)

How to use

Paste candidate JSON. Include the exact text to validate.
Validate. Run to parse and report success or the error message.
Fix issues. Correct commas, quotes, or brackets, then validate again.

Processing and limitations

Validates syntax only. It does not validate JSON Schema, business rules, required fields or duplicate-key uniqueness. Property names must use double quotes, and trailing commas are invalid.

Reference

Benefits

Free to use—no account required
Runs in your browser
Instant results with no software install
Basic processing does not upload your content to a server
Success means valid syntax—not that the schema matches your app’s expectations.

Not the same as

For indented viewing after it validates, open JSON Formatter.

JSON Validator