Only sizes Apple actually accepts
Every option is a real accepted dimension, labelled with its device class and marked when it is the one you must upload. No free-text width and height to get wrong.
Drop a folder of captures, pick the device class, and get back a zip at the precise pixel dimensions App Store Connect accepts. Everything runs in your browser.
Resize screenshotsApp Store Connect does not round, does not crop, and does not care that an export was one pixel off. This gets the numbers exactly right.
Every option is a real accepted dimension, labelled with its device class and marked when it is the one you must upload. No free-text width and height to get wrong.
Apple rejects a PNG carrying an alpha channel even when nothing is transparent. Padding is drawn in a solid colour and every file is written as truecolour RGB.
Drop ten captures, tick two sizes, and download twenty correctly named PNGs in a single zip, numbered in upload order.
Resize App Store screenshots when the capture and the requirement do not match.
Yes. No account, no watermark, no file limit, and no paid tier. Resize as many screenshots as your browser can hold.
Almost always an alpha channel. Apple rejects a PNG that carries one even when nothing in the image is transparent, and most image editors add one by default. Every file this tool writes is truecolour with no alpha channel.
The tool will do it and the file will be valid, but it will look soft next to every competitor on the page. It is always better to recapture at the device’s native pixel size — the Simulator reproduces those exactly.
For most apps, two: 1320 × 2868 for the 6.9-inch iPhone class and 2064 × 2752 for the 13-inch iPad class. App Store Connect scales those down to fill every smaller class automatically. Mac takes a 16:10 image and Apple Watch takes its own size, both outside that chain.
Crop to fill when the capture is the right shape and you can lose a few pixels at the edges. Fit and pad when the shape is different and cropping would cut into the interface — the padding is drawn in a solid colour, never left transparent.
No. Decoding, resizing and encoding all happen in your browser. No file is sent anywhere and nothing is stored on a server.
The App Store screenshot generator adds layouts, captions, backgrounds and device frames — and exports at the same exact sizes.