Optimally, 1024 x 748 pixels for backgrounds and gallery images in standard, and 1920 x 1080 pixels for widescreen, however most sizes will work.
JPG, GIF, & PNG are supported on iPad and iPhone. On Mac, we support JPG, GIF, PNG, BMP, and TIF. You can also add Animated GIFs!
What image types are supported?
What size should my background or gallery images be?
What is the maximum file size allowed?
File size is limited to 100 MB. For premium subscribers it is 500 MB.
Yes, you can add shapes in all apps!
Can I add shapes?