JSON Validator & Syntax Checker - Online Validation Tool

Validate JSON syntax, check for errors, and verify data structure instantly. Get detailed error messages with line numbers for quick debugging.

JSON Input

Validation Result

Enter JSON code and click "Validate" to check syntax

How to Use the JSON Validator

Paste or type your JSON code in the input editor
Click the "Validate JSON" button to check syntax and structure
Review the validation result in the right panel
If invalid, check the error message and line number for debugging
For valid JSON, use the "Format JSON" button to beautify the code
Copy the validated JSON using the copy button

💡 Pro Tip: This validator provides detailed error messages with exact line and column numbers, making it easy to identify and fix JSON syntax issues in APIs, configuration files, or data structures.