JSON Validator

JSON (JavaScript Object Notation) is a lightweight data format used for storing and exchanging data. Validation ensures your JSON is properly formatted with correct syntax, preventing errors when used in applications or APIs.

Our validator detects syntax errors like missing quotes, brackets, or commas, invalid escape sequences, and improper data types. It shows the line and column where errors occur.

Yes! The Format button will beautify any valid JSON with proper indentation and line breaks. You can choose between 2 spaces, 4 spaces, or tabs for indentation.

Absolutely. All validation happens directly in your browser. No data is sent to any server. Your JSON remains completely private and secure on your device.

The validator can handle large JSON files up to several megabytes. For very large files, validation may take a moment. The tool uses efficient algorithms to process even complex nested structures quickly.