Windows Icon Sizes — Full Reference
Windows uses ICO files for desktop applications and PNG-based tile assets for UWP and Microsoft Store apps. A single ICO file can contain multiple resolutions, and getting the right set ensures your app looks crisp in every context — from the taskbar to File Explorer large icon view.
Required Sizes
| Size | Format | Purpose |
|---|---|---|
| 256x256 | ICO | Large icon view in Explorer |
| 48x48 | ICO | Medium icon view |
| 32x32 | ICO | Desktop and list view |
| 16x16 | ICO | Small icon view and taskbar |
| 150x150 | PNG | Medium tile (UWP) |
| 310x310 | PNG | Large tile (UWP) |
| 44x44 | PNG | App list icon (UWP) |
| 50x50 | PNG | Store listing icon |
Best Practices
- 1Include 16, 32, 48, and 256px resolutions in a single multi-resolution ICO file.
- 2Use PNG compression for the 256px layer inside the ICO to keep file size reasonable.
- 3Generate separate PNG tile assets (150px, 310px, 44px) for UWP and Microsoft Store submissions.
- 4Test your icon at all sizes in File Explorer by switching between Small, Medium, Large, and Extra Large icon views.
Common Mistakes
- Creating an ICO with only one resolution — Windows looks blurry if the needed size is missing from the ICO.
- Not including 256px in the ICO — Explorer large view will upscale a smaller icon, causing pixelation.
- Forgetting UWP tile assets — Microsoft Store apps need separate PNG tiles beyond the ICO file.
- Using BMP encoding for 256px inside ICO — PNG compression inside ICO is smaller and sharper.
Generate Windows Icons Instantly
Upload one image and get a multi-resolution ICO file plus all UWP tile assets — ready for desktop apps and the Microsoft Store.
Open GeneratorFrequently Asked Questions
What sizes should a Windows ICO file contain?
A Windows ICO file should contain 16x16, 32x32, 48x48, and 256x256 pixel images. The 256px layer should use PNG compression inside the ICO container.
What is the difference between ICO and PNG for Windows?
ICO is a container format that holds multiple resolutions in one file — used for .exe icons and shortcuts. PNG files are used separately for UWP tiles and Microsoft Store assets.
Do I need different icons for the Windows Store?
Yes. Microsoft Store apps require separate PNG tile assets (44px, 150px, 310px) in addition to the standard ICO file used for desktop shortcuts.