https://viewsource.win/npub180cvv07tjdrrgpa0j7j7tmnyl2yr6yr7l8j4s3evf6u64th6gkwsyjh6w6/gitview now supports rendering Markdown (and Djot) files as rich text:
It may seem like nothing, but getting those images to load wasn't trivial, they're being located in the git tree, downloaded as deflated blobs from the git smart HTTP sync endpoint directly, thanks to
https://jsr.io/@fiatjaf/git-natural-api, then encoded as base64 and replaced in the Markdown document.