App Store screenshot size checker
Drop screenshots to see if App Store Connect and Google Play will accept them — exact size, display class, alpha channel, format and file size. Fix problems in one click.
Drop images here or click to choose
PNG, JPEG, WebP or HEIC · checked locally, nothing is uploaded
How to use the screenshot size checker
- 1Drop one or more screenshots.
- 2See each image's size, format, alpha channel, aspect ratio and file size, and which App Store and Google Play slots accept it.
- 3Fix problems in one click: flatten transparency or resize to the nearest accepted size, then download.
Every display class
Checks against all App Store Connect iPhone, iPad, Mac, Watch, TV and Vision Pro sizes and Google Play's rules.
Finds hidden alpha
Detects PNGs saved with an alpha channel, even when every pixel is opaque.
One-click fixes
Resize to the nearest accepted size or flatten to RGB without leaving the page.
Frequently asked questions
Why is my App Store screenshot rejected?
The most common reasons are a size that is not exactly one of the accepted resolutions, an alpha channel in the PNG, or an image uploaded to the wrong device slot. This checker flags all three.
What are Google Play's screenshot rules?
JPEG or 24-bit PNG without alpha, each side between 320 and 3840 px, the long side no more than twice the short side, and up to 8 MB per file.
Are my files uploaded anywhere?
No. The tool runs entirely in your browser using the Canvas API. Images never leave your device.
Related guides
5 min readFix “The dimensions of one or more screenshots are wrong”Why App Store Connect rejects screenshots as the wrong size or with an alpha channel, and how to fix every cause in a few minutes — no Photoshop needed.7 min readApp Store Screenshot Sizes (2026): every iPhone, iPad, Mac, Watch & TV sizeEvery App Store Connect screenshot size in one place: which iPhone and iPad sizes are required in 2026, accepted resolutions, file rules and how scaling works.6 min readGoogle Play Screenshot Sizes & Graphic Requirements (2026)Google Play screenshot, feature graphic, icon and video requirements for phones, tablets, Chromebooks, Wear OS, TV and XR — plus what you need to be eligible for promotion.
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Make your store screenshots now — free
Templates, device mockups, AI translation and exact-size export for both stores. No account, no watermark.