What the App Store Screenshot Generator Does
Publishing an app means handing the store a precise set of marketing images, and the requirements are unforgiving. Apple wants a 6.9-inch iPhone screenshot at exactly 1320×2868 pixels; Google Play wants a 1080×1920 phone image and a 1024×500 feature graphic. Get a dimension wrong by a single pixel and the upload is rejected. This tool turns a raw screenshot into store-ready images: drop in a capture, choose a device preset, optionally add a marketing caption and a colored background, and export a PNG built at the store’s exact resolution. Everything is composited on a canvas inside your browser tab, so your unreleased app never travels to anyone else’s server.
Every Store Size, Built In
The hardest part of preparing store assets is keeping track of which size goes where, and those sizes shift as Apple and Google ship new hardware. The presets here reflect the 2026 requirements: lead with the 6.9-inch iPhone (1320×2868), keep the 6.7-inch (1290×2796) as a fallback, and cover the 13-inch iPad Pro at 2064×2752. On the Google Play side you get the standard 1080×1920 phone, 7-inch and 10-inch tablets, and the feature graphic banner. Pick one and the canvas is created at that pixel size immediately, so the file you download is the file you upload. If your source artwork started life as a slide or a PDF, you can rough it into an image first and then frame it here.
Captions That Convert, Not Just Screens
A bare screen capture rarely sells an app. The listings that convert pair each screenshot with a short, benefit-led line — “Track every workout,” “Split bills in seconds” — placed in a caption band above or below the device. This generator gives you that band with control over text, font size, and position, and it sizes the device to fit whatever space the caption leaves. You can hold the caption off for a clean, full-bleed shot, or build a sequence where the captions read like a story across the first three images, which is the part of the listing most people actually see. When you want to drop the framed result onto a landing page next to other UI, the device mockup generator handles the browser-window and laptop framing that stores don’t need.
Device Frames, Backgrounds, and Honest Cropping
Switch the device frame on and your screenshot sits inside a rounded bezel that instantly reads as a phone or tablet; switch it off for the raw, unframed capture Apple’s reviewers expect or the edge-to-edge feature graphic Google needs. A set of original background gradients sits behind the device so your set looks designed rather than thrown together, and you can match the accent to your brand. One thing this tool will not do is lie to you about fit: if your screenshot’s aspect ratio differs from the chosen frame, it center-crops to fill and tells you it did, rather than silently stretching your UI out of proportion. For a pixel-exact result, capture on the matching simulator; for drafting captions and deciding on a layout, a single capture previewed across every size is plenty. Once exported, you can shrink the PNG with the image optimizer if you want a lighter file.
Why a Browser Tool Beats an Upload Site
App screenshots routinely show features that have not launched, internal test data, or a design you would rather competitors not see early. Most online screenshot makers upload your images to their servers to process them, which puts that material on a third party’s infrastructure under their retention and security. This tool composites everything locally with the Canvas API, so the screenshot never leaves your device — faster, because there is no upload-and-download round trip, and far safer for anything confidential. It is the same client-side principle behind the other image tools on this site, like the color grading and image conversion utilities. There is no account, no watermark, and no export cap, which also keeps you compliant: both Apple and Google prohibit misleading overlays, so a clean, watermark-free PNG is the correct deliverable.
Frequently Asked Questions
Are my screenshots uploaded to a server?+
No. Everything happens inside your browser tab. When you add a screenshot, it is read into a canvas on your own device, composited with your background and caption, and exported straight back to you. Nothing is sent anywhere, there is no account, and nothing is stored or logged. App screenshots often reveal unreleased features and internal data, so the local-only design means your work in progress never leaves your machine — you get the convenience of an online tool with the privacy of a desktop app.
What sizes does it export for the App Store and Google Play?+
It outputs the exact pixel dimensions each store expects in 2026. For Apple, that includes the 6.9-inch iPhone at 1320×2868 (the size to lead with), the 6.7-inch iPhone at 1290×2796, older iPhone classes, and the 13-inch iPad at 2064×2752. For Google Play, it produces the standard 1080×1920 phone size, 7-inch and 10-inch tablet sizes, and the 1024×500 feature graphic. You pick a device preset and the canvas is created at that resolution, so what you download is ready to upload.
Do I need a screenshot taken on the exact device?+
For a pixel-perfect, crop-free result, yes — a capture from the matching simulator or device fills the frame exactly. But you do not have to. If your screenshot has a slightly different aspect ratio, the tool center-crops it to fit the chosen frame and warns you that it did, so there is no silent distortion. You can preview every device size from a single capture, which is enough for drafting your store listing and deciding on captions before you take final native captures.
Can I add marketing captions above or below the screenshot?+
Yes. Each frame can carry a caption placed in a band at the top or bottom, with the screenshot sized to fit the remaining space. You control the text, the font size, and whether the caption sits above or below. This is how high-converting store listings are built: a short benefit-driven line per screenshot (“Track every workout”, “Split bills in seconds”) rather than a bare UI capture. You can also turn captions off entirely for a clean, full-bleed device shot.
Why can't I just reuse my App Store screenshots on Google Play?+
Because the stores use different aspect ratios. An App Store iPhone screenshot is roughly 9:20 (for example 1290×2796), which falls outside Google Play's accepted range of 1:2 to 2:1, so Play will reject it at upload. This tool keeps a separate preset for each store and rebuilds the canvas at the right shape, so you generate one set for Apple and a correctly-proportioned set for Google rather than fighting upload errors. It is the same reason designers keep distinct export sets per platform.
Does it add a device frame around my screenshot?+
It can, and you can switch it off. With the frame on, your screenshot is inset inside a rounded device bezel so it reads instantly as a phone or tablet — the look most polished store listings use. With the frame off, the screenshot fills the panel edge to edge, which is what Apple's reviewers expect for raw, unframed captures and what the Google Play feature graphic needs. Toggling the frame lets you produce both the marketing version and the bare-capture version from the same source.
Is there a watermark or a limit on how many I can make?+
No watermark and no limit. The whole point of a browser-based, ad-supported tool is that the output is clean and yours — unlike many screenshot apps that stamp a logo on the free tier or cap your exports until you subscribe. Generate as many frames, sizes, and caption variations as you want; nothing is added to the image and nothing is gated. Apple and Google both prohibit misleading overlays, so a watermark-free export is also the compliant choice.
What file format does it export, and is it store-compliant?+
It exports PNG, which both stores accept and which keeps text and UI edges crisp. The canvas is flattened onto your chosen background with no transparency, which matches Apple's no-alpha rule and Google Play's 24-bit PNG requirement. Because the output is generated at the store's exact pixel dimensions, a downloaded file is ready to drop straight into App Store Connect or the Google Play Console without resizing. If you prefer smaller files for a draft, you can always run the PNG through an image optimizer afterward.