Option 1: Open a photo from your Gallery or Library.
Tap the Open Photo button at the top, then select the Choose Photo option to launch your Gallery. On an iOS device, select the Photo Library option. Locate your image and tap it to open the image in Snapseed.
Option 2: Snap a new photo.
To activate the camera on your device, Tap the Open Photo button, then select the Take Photo or Camera option.