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What is resizeappicon.com?
resizeappicon.com is a browser-based tool that resizes a single app icon into the many pixel dimensions required by iOS (iPhone/iPad), Apple Watch, and Android. You upload one source image, and it generates the full set of sizes for you.
What it does
- Accepts a drag-and-drop upload or a manual file selection.
- Produces separate size sets for iOS iPhone/iPad, iOS Watch, and Android, including Android density buckets such as LDPI, MDPI, HDPI, XHDPI, and XXHDPI.
- Lets you download all generated icons or only selected ones, with an "instant download" option.
- States that best results come from source images at 512×512 or 1024×1024 pixels.
- Offers app icon management as a related service, including storing icons and notifying you when new resolutions are required.
- Is built by Beyond Code, the company also behind the BotMan PHP chatbot framework.
Who it is for
It suits solo developers, small mobile teams, and freelancers who need platform icon sets without opening a design tool for every size. It is less useful if you need full asset catalogs, vector output, or automated build-pipeline integration.
Practical example
A developer finishing an iOS and Android release has one 1024×1024 PNG. Rather than exporting 20-plus sizes manually, they upload it once, check the iOS, Watch, and Android sets, and download the files into the project's asset folders.
Next step
Prepare a square source image at 1024×1024 pixels, then compare the generated size list against your target platform's current requirements before committing the files. For official guidance, check Apple Developer and Android Developers.
How do I resize an app icon for both iOS and Android using this site?
Upload one master image and let the site generate the platform-specific sizes. Drag your source file onto the upload area (or choose it manually); the icons are generated automatically, and you can enable instant download to grab the full set in one go. For best results, start from a 512x512 or 1024x1024 pixel image.
What you get per platform
| Platform | Output groups | Typical sizes shown |
|---|---|---|
| iOS (iPhone/iPad) | All, iPhone, iPad, Required | 20x20 up to 1024x1024, including common iPhone/iPad sizes |
| iOS Watch | All | 48x48, 55x55, 80x80, 88x88, 172x172, 196x196 |
| Android | All, High | 36x36 (LDPI) through 192x192, plus 512x512 for Google Play |
Use the filter buttons to narrow the list, then download everything or only the selected sizes. If you maintain icons for multiple clients, the site also offers app icon management, where master files are stored and you're notified when new resolutions are needed.
A practical workflow: export your logo as a square PNG at 1024x1024 with no transparency for iOS (the App Store rejects alpha in the marketing icon) and transparent PNG for Android adaptive assets, upload it, download the iOS set and the Android set separately, then drop them into the matching asset catalogs or mipmap folders in Xcode and Android Studio. Check the smallest sizes (20x20, 29x29, 36x36) by eye, since fine details disappear there.
If you'd rather generate icons inside your build pipeline, tools like GitHub Actions with an icon-generation script or dedicated CLI utilities can automate the same resizing. For design work before uploading, Figma is a common place to prepare the master artwork at the recommended resolution.
What image resolution should I upload to get the best results?
Upload a square source image at 512×512 or 1024×1024 pixels — the site explicitly states these resolutions produce the best results. Anything larger is wasted effort; anything smaller risks blurry or soft icons once scaled up to the largest required sizes (1024×1024 for iOS, 512×512 for the Google Play Store).
Why that range works
The resizer generates a long list of output sizes across three platforms:
- iOS iPhone/iPad: from 20×20 up to 1024×1024
- iOS Watch: 48×48 up to 196×196
- Android: 36×36 (LDPI) up to 512×512 (Google Play Store)
Since the biggest target is 1024×1024, a 1024×1024 source means every smaller icon is a clean downscale rather than an upscale. A 512×512 source still covers almost everything well, but the 1024×1024 iOS asset will be interpolated.
Practical checklist before uploading
- Square canvas. Non-square images get cropped or distorted; start square.
- No transparency surprises. iOS icons are flattened to opaque, so a transparent background may turn black or white. Fill it deliberately.
- Keep critical detail centered. Corner rounding and masking vary by platform, so don't put essential elements near the edges.
- Start from your master artwork, not a previously exported small icon — repeated re-encoding degrades quality.
- Check the smallest outputs (20×20, 29×29, 36×36). Fine text and thin strokes vanish at those sizes; simplify if needed.
A concrete scenario
A designer with a 2048×2048 master exports a 1024×1024 PNG, uploads it, and enables instant download. The 1024 and 512 assets come out crisp; the 20×20 and 29×29 settings icons look muddy because the logo has a thin wordmark. The fix isn't a bigger upload — it's a simplified variant for the tiny sizes.
The tool itself is at resizeappicon.com. If you also need to preview how icons appear on home screens and store listings, Apple's Human Interface Guidelines and Google's Material icon guidance are the reference points worth reading alongside it.
Does this tool support Apple Watch icon sizes?
Yes. resizeappicon.com includes a dedicated iOS Watch section alongside its iPhone/iPad and Android groups. The page lists Watch output at 48x48, 55x55, 80x80, 88x88, 172x172 and 196x196 pixels, with an "All" toggle to select the full set at once.
What that means in practice
You upload one master image, and the service generates the platform sets automatically. For a watchOS-only project, you would still typically export the iPhone/iPad set as well, since a Watch app ships inside an iOS app bundle — so treat the Watch sizes as one tab in a broader export rather than a standalone pipeline.
A useful habit: keep the master file at 512x512 or 1024x1024, which the page notes gives the best results. That leaves enough pixels for the largest Watch size (196x196) and for the 1024x1024 iOS marketing icon without upscaling.
If you want to confirm the current list against Apple's own requirements, check Apple Developer — asset catalog requirements change with new OS releases, and a resizer's list can lag behind.
Can I manage and store multiple app icons on this service?
Yes. resizeappicon.com is not only a one-off resizer; it also describes App Icon Management as a way to store unlimited app icons in one place, with notifications when new resolutions are required and handling of your master icon file. That makes it useful if you maintain several apps or keep revisiting the same icon project over time.
What management adds beyond resizing
A plain resizer is a quick utility: upload one image, generate the iOS, Watch and Android sizes, download the set. Management turns that into a small library. You keep the master icon and the generated variants together, so you are not hunting for the original file next time a store or platform changes its requirements.
Who benefits
- Freelancers and small studios juggling multiple client apps, where each client may need a different icon set.
- Teams that want one canonical source icon rather than several versions scattered across machines.
- Developers targeting several platforms, since the service covers iPhone/iPad, Apple Watch and Android in one pass.
Practical next step
Before uploading, prepare a single master image at 512×512 or 1024×1024 pixels, which the service identifies as giving the best results. Then decide whether you need a one-time download or an ongoing store of icons; if you expect to return to the same apps, the management feature is the more relevant part of the service.
For related icon and asset work, Apple's own developer resources are at Apple Developer and Google's at Android Developers.
Is resizeappicon.com free to use?
Yes, resizeappicon.com is free to use for the core resizing job. According to the site itself, you upload an icon and it generates the needed resolutions automatically, with an option to download all icons at once. There is no pricing page, no listed payment platform, and no paid tier mentioned in the page evidence.
What you get without paying
- Upload a single master image and get iOS (iPhone/iPad), iOS Watch and Android icon sizes.
- Download individual sizes or all of them together.
- The site recommends starting with a 512×512 or 1024×1024 pixel source for the best results.
- An "instant icon download" option lets you skip the preview step.
Where money might come in
The page mentions "App Icon Management" and "App Stores for your Clients" as separate offerings, but it does not state a price or a free/paid boundary for those. Treat the resizer as free and the management services as something to ask about directly if you need them.
A practical scenario
You have a 1024×1024 PNG and need every iOS and Android size for a release. Upload it, download the bundle, and drop the files into your project. That whole loop costs nothing. If you later need a team to store master icons and be alerted when Apple or Google adds new required sizes, that is the kind of ongoing service the site hints at but does not price on this page.
Next step
Check the "Icon Sizes" and "My Icons" links on the site before uploading, so you know which platform set you need. If you only need a quick one-off resize, you can ignore the login and management parts entirely.
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