Fix an App Store screenshot size error
Diagnose a rejected screenshot by measuring pixels, checking its upload slot, orientation and alpha channel. Try reproducible passing and failing image files.
Keep the rejected export and identify the exact upload slot before changing the design. Then check the file itself. Renaming it, editing DPI or selecting a different device frame does not necessarily change the pixels that the store receives.
1. Measure the exported width and height
Open the file in the local checker. Compare its actual dimensions with the accepted Apple slot dimensions. If they differ, return to the design canvas and export at an accepted size. Do not distort the source app interface to make it fit.
2. Match the orientation and upload slot
A 1320 × 2868 portrait image belongs to a different class from a 2064 × 2752 iPad image. The numbers may be valid somewhere but fail for your selected slot. Portrait and landscape are separately listed. For JPEGs with EXIF rotation, bake the rotation into the image before re-exporting so the displayed and encoded orientation agree.
3. Inspect the format and alpha channel
PNG and JPEG are accepted, but Apple excludes alpha channels. A solid-looking RGBA PNG still has an alpha channel, even when every pixel is opaque. Flatten onto a solid background and export an RGB PNG or JPEG. Changing the filename from .webp to .png is not a conversion.
Reproduce the diagnosis with these files
These original geometric test patterns demonstrate file checks. They are not screenshots of a real app and should not be submitted to a store.
| Download | Choose this slot | Expected result |
|---|---|---|
| RGB PNG, 1320 × 2868 | iPhone 6.9-inch | Pass checked file rules |
| Opaque-looking RGBA PNG, 1320 × 2868 | iPhone 6.9-inch | Needs changes: alpha channel |
| RGB PNG, 1320 × 2800 | iPhone 6.9-inch | Needs changes: dimensions |
| JPEG, 2868 × 1320 | iPhone 6.9-inch | Pass checked file rules, landscape |
4. Recheck the new file and review the console message
Upload the corrected file into the checker again, then the intended store slot. If it still fails, retain the exact console message: app coverage, content, incomplete sets or other requirements may be involved. This checker only tests a subset of file properties and cannot guarantee store approval.
Source: Apple screenshot specifications. Checked September 10, 2026. Store guidance can change; confirm the upload slot in your console before submitting.