Swagger Viewer
Online Swagger viewer for importing OpenAPI and Swagger docs, browsing endpoint details, parameters and response examples, with built-in request testing
Document Source
Document Stats
Spec Version
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Path Count
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Operation Count
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Load Swagger/OpenAPI by URL or pasted content
Guide
Swagger Viewer helps you load and inspect OpenAPI/Swagger documents, then review endpoints, parameters, and responses for faster API collaboration.
Key Features
- Supports URL import or direct JSON/YAML paste for common OpenAPI workflows.
- Displays methods, paths, params, request body, and response definitions clearly.
- Supports live endpoint testing with path params, query params, headers, and body.
- Shows security schemes, server URL, and document metrics for review and debugging.
How To Use
- Choose source: URL import, content paste, or sample doc.
- Load and parse the document, then browse endpoint list.
- Select endpoint, fill params, and send a request.
- Inspect response status and payload for integration checks.
Use Cases
- Frontend-backend API integration and field validation
- QA endpoint verification and regression troubleshooting
- Backend API document review and issue localization
- Quick validation before third-party API integration
FAQ
- Which specs are supported: Swagger 2.0 and OpenAPI 3.x.
- Why request may fail: target CORS or auth policies can block browser calls.
- YAML parse errors: check indentation, colons, and list markers.
- Will content be uploaded: no, parsing runs in your local browser.
Privacy
Document content stays local in your browser; only explicit request sending triggers network calls to the target API.