JSON Validator

JSON

Validation

Client-side

No Upload

Check whether your JSON is valid and identify the root data type. Everything is processed directly in your browser.

JSON Input

0 chars

Lines: 0UTF-8: 0 bytes

Validation Result

Ready to validate

Paste JSON on the left and click Validate JSON.

About JSON Validation

JSON Validator checks whether your input follows valid JSON syntax. It detects malformed strings, missing quotes, invalid commas, incorrect brackets, and other JSON syntax errors.

The validator also identifies the root type of valid JSON, such as object, array, string, number, boolean, or null.

Your JSON never leaves your browser. No file upload or external processing service is required.