What is JSON Validator?
A JSON Validator parses input strings against standard RFC 8259 syntax specifications to locate syntax errors such as unquoted keys, trailing commas, missing brackets, or unexpected characters.
How to use this tool
- Paste your JSON payload into the editor window.
- Click "Validate JSON".
- Review the validation status banner for confirmation or specific line/column error locations.
Common Use Cases
- Checking API request bodies prior to execution in curl or Postman.
- Finding subtle typos or stray commas in complex configuration files.
- Verifying Webhook payloads received from external integrations.
Frequently Asked Questions
What are the most common JSON errors?
The most frequent errors are single quotes instead of double quotes around keys/values, trailing commas after the final object property, and unescaped linebreaks inside strings.