Thank you, I didn't realize how easy Ren'py makes it to do until I saw this! Now I've updated my submission to include a web version. As a bonus, it also works pretty well on the phone, besides not having the custom GUI (maybe something I can work on in the future).
For anyone needing some additional tips, I recommend this thread: https://itch.io/t/2289319/creating-htmlweb-builds-last-tested-with-75122070801
It goes over how to fix the pixilated graphics / skipped sounds you might experience when first exporting a web build, very handy!