JSON Validator

How to use JSON Validator

1. Paste the complete document into JSON Validator.
2. Run validation without changing the original input.
3. Read the validation result and locate any reported syntax problem.
4. Correct the source and validate again until it passes.

Common uses

• Validate API request bodies
• Check configuration before deployment
• Locate malformed copied JSON

Example input

{"valid":true}

Example result

Valid JSON - no syntax errors found.

Common mistakes

• Single quotes instead of double quotes
• Comments inside JSON
• Missing commas between properties

Tips for reliable results

• Validate the complete document because a partial fragment may fail even when it came from a valid source.
• Start with the first reported syntax error; later errors can be side effects of the same missing delimiter or closing token.
• Run validation again after every correction instead of assuming the remaining document is valid.

Frequently asked questions