Developer Tools
JSON Validator
Validate JSON syntax and locate errors.
JSON Validator
Processing...
🔒 This staging build distinguishes browser processing from backend/API processing instead of making unsupported privacy claims.
How to use JSON Validator
- Add the file or text required by the tool.
- Choose any available options.
- Select Run Tool.
- Review or download the result.
About this tool
Validate JSON syntax and locate errors. The interface is designed to keep the main action close to the top of the page, with supporting explanations below it rather than burying the utility under SEO text.
Related tools
Frequently asked questions
Is JSON Validator free?+
This tool is part of the 360FreeTools free online toolkit. Any future technical limits will be stated clearly.
Does it work on mobile?+
The interface is responsive and is designed for modern mobile and desktop browsers.