Put it into practice
- Confirm the source shows the intended feature.
- Check frame corners, notch and navigation.
- Inspect margins and text in the exported file.
What this looks like
A reviewer catches a clipped bottom tab bar before a launch image is approved.
A detail to keep clear
An attractive frame should not obscure the product evidence the image is meant to show.
Using MockupX
Device frames, output dimensions and source screenshot dimensions are separate choices. A phone frame on a square canvas is useful for social sharing; it is not automatically an accepted app-store upload. Check orientation, fit and output pixels independently.
Check the result
Keep the original screenshot, then review the exported file at the size where people will see it. Check the message, the visible interface and the final crop separately. For a handoff, record the destination and the approved file so another person can distinguish the final version from a draft.
References and further reading
Use the official references for format behavior and current destination requirements. The composition advice above is a practical design approach, not a promise of platform approval.
Apple screenshot specifications ↗Google Play preview assets ↗