JSON TOOLS

JSON Validator

Check whether JSON can be parsed and identify its root type before you send, transform or generate code from it.

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JSON Validator

Input

OutputReady

Ready0 chars

ABOUT THIS TOOL

What does JSON validation check?

The validator checks JSON syntax by parsing the document and reports invalid input instead of silently accepting malformed data. For valid input it also identifies whether the root value is an object, array or another JSON type.

COMMON USES

Useful for everyday developer work

Validate an API request body before testing an endpoint.
Check copied log or response data for syntax problems.
Confirm that generated JSON is parseable before conversion.

HOW IT WORKS

Use this tool in three steps

Paste your data.
Choose any available options and run the tool.
Review, copy or download the result.

PRIVACY

Local by default

This public tool runs in your browser. Its input is not written to the DevPayload database.

FAQ

Frequently asked questions

Does validation send my JSON anywhere?

No. Normal validation is performed locally in the browser.

Is a valid JSON document automatically valid for my API?

No. Syntax validity only means the JSON can be parsed. Your API may still require a specific schema, fields or business rules.

Do I need an account?

No. Public deterministic tools work without signing in.