JSON Validator
Validate JSON syntax and report errors with position information. Shows structure type and key count for valid JSON.
How to Use JSON Validator
The JSON Validator is a free online tool that checks whether your JSON is syntactically valid and reports any errors with their position. Paste JSON and click validate to get instant feedback — green checkmark for valid JSON with structure info (type, key count), or red error with the specific syntax issue and location. Whether you are debugging API responses, validating configuration files, checking data exports, or learning JSON syntax, this tool provides clear pass/fail results instantly in your browser.
Step-by-Step Instructions
- Paste your JSON into the input area
- Click Validate to check the syntax
- See green checkmark for valid or red error for invalid
- Review error message with position for debugging
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