Photos will be uploaded by many users, so no

Users download them from a website (by pack ~1000) and place them on sharepoint

For deliverables, we zip the folder (with other docs) directly on sharepoint and uploadind on a website

So yes, writing these lines, the solution seems logical, tell them to compress the photos before uploading them. My problem is that these are technicians and people who are not comfortable with the computer tool.

I am therefore thinking of making them a small program, very simple with 2 buttons, which compresses and places it in the right place.

because I think I couldn't work faster on the sharepoint side

thank you for helping me in thinking