App Store Screenshot Size Checker
Drop your screenshots and get an instant verdict against the 2026 App Store Connect requirements: exact pixel dimensions, matched device class, and a check for the hidden alpha channel that gets PNGs rejected.
Drop screenshots here
or click to choose files. PNG or JPEG, as many as you like.
What the checker validates
Every file is compared against the sizes App Store Connect accepts for the current required display classes:
| Device | Portrait | Landscape | Notes |
|---|---|---|---|
| iPhone 6.9″ | 1320 × 2868 | 2868 × 1320 | The required iPhone size. The ASC API calls this display class APP_IPHONE_67; the asc CLI uses IPHONE_69. |
| iPad 13″ | 2064 × 2752 2048 × 2732 |
2752 × 2064 2732 × 2048 |
Required only if your app declares iPad support. Both pixel counts are accepted. |
On top of dimensions, the checker parses each PNG's IHDR header byte for the color type. Color types 4 and 6 carry an alpha channel, which App Store Connect rejects with IMAGE_ALPHA_NOT_ALLOWED even when the image looks opaque. Remember: each localization takes 3 to 10 screenshots, and the alphabetical order of your filenames is the order they appear on your product page.
FAQ
What size do App Store screenshots need to be in 2026?
For iPhone: 1320×2868 (portrait) or 2868×1320 (landscape), the 6.9-inch display class. For iPad apps: 2064×2752 or 2048×2732 portrait, 2752×2064 or 2732×2048 landscape. Full details in the 2026 sizes guide.
Are my screenshots uploaded anywhere?
No. The tool runs entirely in your browser. It reads the first bytes of each file locally to get dimensions and PNG color type. Your images never touch a server.
My size is right but the checker flags an alpha channel. What now?
Run the file through the free Alpha Channel Fixer. It flattens the image and re-encodes it as a true RGB PNG (color type 2) right in your browser, then verifies the result.
Why does my 1290×2796 screenshot fail?
1290×2796 is the older 6.7-inch display size. The current flagship requirement is the 6.9-inch class at 1320×2868. Re-capture on a 6.9-inch simulator (iPhone 16 Pro Max class) or re-frame your artwork at the new canvas size.
Related
Screenshots that pass review are table stakes.
ScreenshotPunch generates App Store screenshots with editorial art direction: real typography, elements breaking the frame, localized copy. Coming soon.
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