Validation

JSON Validator

Validate JSON syntax in real-time, detect missing quotes, unclosed brackets, trailing commas, and inspect payload schemas.

How to Use JSON Validator

Enter your JSON payload into the validator.

Real-time analysis highlights exact error locations and data types.

Inspect object keys count, array items, and byte size.

Developers debugging API responses, DevOps checking config files, and students learning JSON standards.

Validates RFC 8259 compliant JSON syntax.

What are common causes of invalid JSON?

Common issues include trailing commas after the last array/object element, single quotes instead of double quotes, and unescaped line breaks.

Is my source code, JSON, or payload data sent to external servers?

Can I convert multiple files in batch at the same time?

What is the maximum file size limit for JSON Validator?

Is JSON Validator safe and secure for sensitive or confidential files?

Do I need to install any software, browser extensions, or plugins?

Decode percent-encoded (%20, %26, %3D) URLs and query parameters back into human-readable text.

Prettify, validate, format, and indent JSON data with custom spacing and instant syntax highlighting.

Escape special HTML characters (&, <, >, ", ') into HTML entities to prevent XSS attacks and rendering issues.

Convert JSON object arrays and nested data payloads into clean tabular Comma-Separated Values (CSV).