You can assign each photo a rating from 1-5 stars, or may alternatively rate it as Rejected, in which case Shotwell will hide the photo by default.
You can rate a photo or a set of photos in any of these ways:
Select the photo(s), then choose a rating from the top-level
Right-click on the photo(s), then choose a rating from the Set Rating context menu.
Select the photo(s), then press any of the shortcut keys
Normally Shotwell displays all photos except rejected photos. You can set a different rating filter using the
Shotwell normally displays each photo's rating in its lower left-hand corner. You can turn off the display of ratings using the
You can increase or decrease a photo's rating using the