Special:Upload is mostly usable on mobile, but there are a couple things that should be improved:
- The desktop version has some Javascript that runs once the file is selected. This Javascript:
- fills in the 'destination filename' field
- generates a thumbnail of the image
- applies rotation to this thumbnail if required
- checks to see if the file already exists on the wiki
- checks if the file is larger than the allowed upload size
- previews the chose license
- warns of leaving the page without submitting the made changes
This Javascript doesn't run in the mobile version, probably because it doesn't have target=mobile.
- Add the ability to have a link for it in the main menu based on a feature flag (similar to the old Special:Uploads link, with same icon).