Check out the links below to learn how to quickly and easily "mask" an image in Google Docs and Google Slides!
Video: Masking and Cropping Images in a Google Doc or Google Slides (4:28)
To "Mask" an Image in Google Slides:
1. Go to INSERT > IMAGE from the menu at the top.
2. Select or search for desired image; then click SELECT
to insert image onto slide.
4. Choose desired shape around which you want to "mask" your image.
3. Click on your image and choose the little down arrow next to the crop tool within the toolbar at the top.