Buy me a coffee

JSON Validator

Validate JSON syntax and structure with detailed error messages

Features

Syntax Validation

Check JSON syntax and detect errors instantly

Detailed Errors

Get precise error messages with line and column numbers

Auto Formatting

Automatically format valid JSON with proper indentation

Local Validation

All validation happens in your browser

Frequently Asked Questions

A JSON Validator is a tool that checks if your JSON data is properly formatted and follows correct syntax rules. It identifies errors and shows you exactly where and what went wrong.
Paste your JSON data into the input field and click 'Validate JSON'. The tool will check the syntax and either show a success message with formatted output or display detailed error information.
The validator detects all JSON syntax errors including missing commas, unclosed brackets or braces, invalid characters, trailing commas, incorrect quotes, and malformed values.
Yes! When an error is found, the validator displays the line and column number where the error occurred, making it easy to locate and fix the problem.
Absolutely! If your JSON is valid, the tool will automatically format it with proper indentation (2 or 4 spaces) and display it in the output field.
Yes, all validation happens locally in your browser. Your JSON data is never sent to any server, ensuring complete privacy and security.