You can use https://gistpreview.github.io/?GIST_ID to render the index.html from a gist:
- https://gist.github.com/3v0k4/47fcdc2dfc1661cfb240748fc0d97f1b
- https://gistpreview.github.io/?47fcdc2dfc1661cfb240748fc0d97f1b
Use https://gistpreview.github.io/?GIST_ID/FILE_NAME for any file:
The raw content of a file (e.g., PNG) can be accessed with https://gist.github.com/3v0k4/GIST_ID/raw/BLOB_ID/FILE_NAME. To get the BLOB_ID use git ls-tree -r head in the cloned gist.