Maximum file size for each photo should ideally not exceed 7mb (though up to 15mb is allowed).
Large file sizes are not user friendly and they slow down process for all.
3mb files is ours (and industry) recommendation.
Accepted formats: .jpg .jpeg .png .pdf .tif (in RGB)
Here is a website where you can compress / downsize your images if you need to.
note - we have no affiliation with this service.
We found the default settings to work well, you can also adjust these settings if you’re unhappy with the compression.