ExploreNote / shots
Exact pixels, before you upload

App Store screenshot size checker

Drop a JPEG or PNG, or type the width and height. The check uses Apple’s published screenshot sizes and runs in your browser.

Check a screenshot

Drop up to 10 JPEG or PNG screenshots. Nothing is uploaded.

The result stays on this device.

What an exact match means

Apple says you can upload one to 10 screenshots in .jpeg, .jpg, or .png format. Images can’t include alpha channels or transparencies. This tool compares pixel dimensions with the specification checked on 2026-10-05. It does not resize an image, remove transparency, or know whether App Store Connect will accept the file.

The full transcription is on the screenshot sizes page. Source: Screenshot specifications, checked 2026-10-05.