Toolbox for developers / json schema validator

JSON Schema Validator

This tool allows you to validate that a JSON document conforms to the definition described by a JSON Schema. It supports JSON Schema draft-07.

Fill in the editors below and it will automatically check if your JSON conforms to JSON schema.
You can see the user guide to help you to use this online JSON schema checker.



User guide

Step 1: Fill "JSON" editor. You can Drag and drop a JSON file, click on "Browse a JSON file" or directly type in the editor.

Step 2: It is analogous to step 1 ("JSON Schema" editor).

Step 3: As soon as the editors are filled, the tool checks if the JSON conforms to the schema. If errors are detected then they are displayed below the editors, else a success message is displayed.

JSON schema user guide

This tool allows to quickly validate the compliance of your JSON document.

About JSON Schema Validator

This online JSON Schema Lint tool allows you to validate that your JSON document conforms to the specified schema. It uses the last release of JSON schema (draft-07).

To validate JSON from a Schema, it uses the ajv library. You can visit this website to learn more about this check.

What is JSON Schema?

JSON Schema is used to define how a JSON should be structured, it describes data format for complete structural validation.

This makes it easy to ensure that a JSON is properly formatted, it is useful for automated testing and validating.

JSON Schema provides clear human- and machine- readable documentation.

JSON Schema Example:

    "$schema": "",
    "title": "Tool",
    "description": "An online tool",
    "type": "object",
    "properties": {
        "id": {
            "description": "Tool identifier",
            "type": "integer"
        "name": {
            "description": "Tool name",
            "type": "string"
    "required": ["id", "name"]

The JSON Object below conforms to above JSON Schema.

    "id": 1,
    "name": "XML diff"

Why validate the compliance of JSON data?

The JSON format has emerged in recent years, especially with the use of the REST APIs.

To develop quality Web services, it is important to test and validate JSON responses. This can quickly become difficult when there are many JSON responses to analyze.

JSON Schema can be a great tool to validate the JSON responses! Using the JSON schema can facilitate this validation!

You can report a bug or give feedback by adding a comment (below) or by clicking "Contact me" link (at the top right hand corner of the page).


Niels Muller Larsen-2018-09-24 04:56
Plain and simple. Just does it :)

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