OpenAPI / Swagger YAML or JSON
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Paste an OpenAPI spec to get started
Supports OpenAPI 3.x and Swagger 2.x in YAML or JSON format
About OpenAPI Viewer
OpenAPI Viewer parses REST API documentation files. It structures endpoints, displays parameter requirements, lists response codes, and outlines schemas.
How to Use OpenAPI Viewer
- Paste your OpenAPI YAML or JSON specification.
- Click "Load Spec".
- Browse paths, request parameters, and response schemas.
Frequently Asked Questions
Can I view both Swagger and OpenAPI?
Yes. The reader parses Swagger 2.0 and OpenAPI 3.x specifications in both JSON and YAML formats.
Does it support testing requests?
This tool is a static specification reader designed to display routes and schemas in a responsive layout. For request testing, we recommend tools like Postman.
Is my OpenAPI spec uploaded to a server?
No, the spec file parsing is performed completely inside your browser using JavaScript.