JSON Validator
Check whether the input can be parsed by JavaScript JSON.parse.
How to use
- Enter the JSON candidate and run validation.
Capabilities and scope
Success reports Valid JSON; failure exposes the parser error message.
How it works
A JSON.parse call is wrapped in try/catch to distinguish syntax success from failure.
Example
{"ok":true} is reported as Valid JSON.
Useful for
- Catch basic JSON syntax errors in API payloads or config
Before you use it
- No JSON Schema rules, required properties, or business constraints are validated.
Frequently asked questions
Does valid JSON mean it matches my schema?
No. This tool checks JSON syntax only.