Preview files from GitHub in a safe, dedicated tab.
Users
5
store count
Rating
0.0 / 5
unchanged in 30 days
Ratings
0
total ratings
Store rank
#273K
#227K among extensions
Version
1.0.3
updated 11 Oct 2026
About GitHub OpenAPI & HTML Viewer
Short description
Preview GitHub HTML files and OpenAPI specifications with ReDoc or Swagger UI.
Detailed description
GitHub OpenAPI & HTML Viewer adds a simple preview workflow for files hosted on GitHub.
- Preview HTML files in a sandboxed viewer.
- Preview OpenAPI 2.0 and 3.x JSON or YAML files with ReDoc or Swagger UI.
- Choose and save your preferred OpenAPI viewer from the extension popup.
- Render Mermaid diagrams included in OpenAPI description fields.
- Open previews from GitHub file pages or directly from raw.githubusercontent.com.
- Resolve relative OpenAPI $ref files from the same GitHub repository.
The extension only runs on github.com and raw.githubusercontent.com.
Permissions explanation
- github.com / raw.githubusercontent.com: Reads the file you choose to preview and relative OpenAPI $ref files in the same repository.
- Storage: Saves your ReDoc or Swagger UI preference.
- Tabs: Opens or switches to the dedicated preview tab.