Screenshots produce low-quality images. Saving the image is a better option, and Downloading the image is the best way to get the highest resolution version available on SmugMug.

Screenshot vs Download

Instructions

When viewing a specific image you want to keep...


Save Image See the first image, below.

Computer: Right-click (CTRL+click for Mac), select "Save image as..."

Phone: Tap/press and hold on the image, select "Add to Photos" ("Save image" for Android)


Download Image See the second image, below.

Computer: Click the underlined down arrow; locate the image in your Downloads folder.

Phone: Click the underlined down arrow; locate the image in your FILES folder (you will NOT find it in your Photos folder if you use the Download method).

Photos