What to check

Before uploading, separate measurable file checks from visual decisions you must make yourself.

contenu / content

One source for two shelves

If both visuals look alike, check that they truly show both app states.

dimensions / dimensions

Wrong pixels

1398×2034 outer, 2007×2853 inner. Not 1242, not 1290.

transparence / alpha

Alpha channel

An alpha channel can make the file unusable. DuoShot outputs an opaque image.

set / set

Incomplete listing

One to ten screenshots per destination are possible. Check that both states and their order tell the same sequence.

vidéo / video

We don’t make the video

Out of DuoShot’s scope. We don’t make the 15–30s preview video. Pixels, yes. App Store preview, no.