To view many of these files, an installed program on your device is needed.
New phones and tablets cannot extract zip files.
FREE Graphics Editor paint.net >
This program will allow you to prepare photos and graphics for your Local U3A Home Page. Cropping is usually needed.
Look at this trusted www.ninite.com > site under imaging.
If help is needed, Looks kike they have a downloader app which also updates programs. There are other Graphics Editors out there.
Take care some free programs sometimes leave adware.