OpenAPI Spec Visualizer & Validator

Validate OpenAPI and Swagger specs and explore paths, operations, schemas, and servers — fully client-side.

100% In-Browser & Private — your data never leaves this device
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How to use the OpenAPI Visualizer

  1. Paste or drop an OpenAPI 3 or Swagger 2 spec.
  2. Review validation status and API summary.
  3. Browse operations, tags, and schema inventory.

FAQ

Is my API spec uploaded?
No. Parsing and validation run entirely in your browser.

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