Mac
screenshot sizes
Mac App Store listings use a landscape canvas, which makes them the one set you cannot adapt from a phone layout at all. These four dimensions cover the Retina and standard Mac displays, from a compact 1280x800 through the 2880x1800 Retina 15".
Exact dimensions for the App Store
Working at this size
Mac screenshots are viewed large, so this is the one place fine detail in the artwork is worth keeping. Export at 2880x1800 unless the source window is small.
Export these sizes free
Every dimension above is a preset in the editor, exporting at those exact pixel values so nothing comes back rejected for being the wrong size. Exporting is truly free, not free to start: unlimited exports, no watermark, and no account needed to download.
Questions
What size are Mac screenshots?
2880 x 1800 pixels, 2560 x 1600 pixels, 1440 x 900 pixels, 1280 x 800 pixels. Any one of those is a valid upload for this display class.
Do I need an account to export Mac screenshots?
No. You can build a set and download it without signing up. Exports are unlimited and carry no watermark, and every size is free: the optional Pro plan adds AI features and custom fonts, never a size.
Will the export be accepted as-is?
The pixel dimensions will match exactly, which is what the store validates first. Exports are flattened PNGs in the RGB colour space, with no alpha channel, which is the format both stores accept.
Other sizes
For submission requirements and how many screenshots each listing takes, see the full App Store screenshot size guide.