We get the question "What size image is best to use?" frequently, but as long as the aspect ratio of the picture matches the ratios below, you will be okay.
The aspect ratio (x:y) of an image is the proportional relationship between its width (x) and height (y).
For example, a group of images with the same aspect ratio of 16:9 can include one image 16 inches wide and 9 inches high, another 16 centimeters wide and 9 centimeters high, and a third 8 inches wide and 4.5 inches high.
In short, the aspect ratio is the relationship between the width to the height, not the image's actual size.
- Size: 1920 x 1080 px
- Aspect ratio: 16:9
- Size: 1080 x 1920 px
- Aspect Ratio: 9:16
- Size: 1080 x 1080 px
- Aspect Ratio: 1:1