JSON Validator

Validate JSON syntax and get clear error messages.

JSON

Result

Result will appear here.

What is JSON Validator?

A JSON validator checks whether a string is valid JSON and reports the position and reason of any syntax error.

1. Paste your JSON in the input box.

2. Click Validate. You will see either "Valid JSON" or an error message with details.

Format, validate, and beautify JSON with syntax highlighting.

Convert JSON array to CSV format.

Convert CSV text to JSON array.

Convert JSON to XML format.

Minify JSON by removing whitespace and newlines.

Format JSON with indentation for readability.

Format, validate, and beautify JSON with syntax highlighting.

Test regular expressions and highlight matches.

Encode text to Base64.

Generate UUID v4 identifiers.

Decode and inspect JWT header and payload.