JSON Schema Validator Logo
JSON Schema Validator
Interactive web app that checks JSON documents against multiple schema drafts and reports validation errors with line information.
Paid; Paid from
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A browser-based interface where you can paste or load a schema and JSON payload to validate compatibility across several schema versions (Draft 3, 4, 6, 7, 2019-09, 2020-12). Validation returns a clear list of errors and line references to help locate problems quickly.

The service is implemented using Json.NET Schema and an ASP.NET Web API backend; the site even includes example controller and request/response models showing how validation is performed and how errors are returned to clients.

Json.NET Schema is distributed by Newtonsoft — available as a NuGet package or as downloadable assemblies — and is provided under a paid license, with one-time purchase options listed on the vendor store.

You can learn more about pricing for JSON Schema Validator at its pricing page.

JSON Schema Validator can be categorized under Development Tools tools.

Not all similar tools offer the same features. Most include a free plan or trial, so you should be able to give them a try. You can browse some of the alternatives to JSON Schema Validator listed in the directory.

Some tools might also offer discounts or offers, especially for newer members. Most of these offers traditionally come as part of affiliate programs or promotions, but often you can reach out to companies and check whether they can give you special pricing.

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