App Store and Google Play both need preview screenshots. If you only have raw app captures, opening a design tool just to layout them costs time. Upload shots here, add titles and backgrounds, optional device frames, and export a set ready to upload.
It is free in the browser. Backgrounds can be solid or gradient with optional texture. Fonts include Inter and several Chinese/handwriting options. Titles, colors, and sizes can be per-slide or shared.
Built-in presets switch the canvas to the matching pixel size:
Need landscape or another iPad size? Use custom width/height — exports match those pixels exactly.
Yes. All features are free to use — no watermarks and no export caps.
No. Open the page and start. Composition runs in your browser; progress stays in local storage so a refresh can resume editing.
“Export all” downloads a ZIP of PNGs named with the size preset and index (e.g. iphone-69_01.png). You can also export one shot or a multi-size master pack (Apple 6.9″ / 6.5″ + Android 1080×1920).
Use the built-in Apple (6.9") preset — 1320 × 2868 — as the primary iPhone set. If you support iPad, also make an iPad (13") set at 2064 × 2752.
The editor needs drag/resize of multiple layers, so it is desktop-browser only for now.
See also Google Play screenshot maker and China Android store sizes, or the developer tools.