App Store screenshot size checker

How to use

Drop one or more screenshots. This page reads each file’s pixel size and alpha locally and matches them against App Store Connect sizes. It does not resize, crop or export. Your images never leave this page.

Or drag images onto this box. HEIC, WebP, GIF and other formats are flagged as wrong for ASC.

About the size list

Sizes come from Apple’s Screenshot specifications page (checked 2026-11-05). ASC accepts .jpeg, .jpg and .png only, and rejects images with alpha. To submit, Apple requires at least one iPhone screenshot for Dynamic Island (medium display) and, if the app supports iPadOS, one for the iPad 13-inch display.

Checker only — no resize. Mac, Apple TV, Watch and Vision Pro sizes are not listed here yet.