I recently made a discovery that has been giving me fits for some time. I had thought that my cell phone camera was very poor as when they traveled the web by way of Google Photos that when I saw them they were low enough resolution that Etsy was complaining,
After a couple of years, I finally looked at the details in Google Photos and the photos were huge. After a bit of freaking out, I discovered that using the simple download most obvious (that I had been using) cut the size so they took up about 1/10 the space in the computer and only by a much more complex path with the short-cut Shift-D would they download at their full size!
I don’t know if anyone else has had that problem, but I am posting this to perhaps save others the headache.