Convert PNG to ICO Format
Turn any PNG image into a Windows ICO file. Our tool lets you embed multiple sizes (16x16 to 256x256) into one ICO, perfect for application or folder icons.
Standard sizes: 16, 32, 48, 64, 128, 256
How the PNG to ICO Converter Works
Upload your PNG image file. The converter accepts PNG files with or without transparency. Select the icon sizes you want to include in the final ICO file.
ICO files can contain multiple sizes in one file. Choose from standard sizes: 16x16, 32x32, 48x48, 64x64, 128x128, and 256x256 pixels. Including multiple sizes ensures your icon looks sharp at any display size.
Click convert and download your ICO file. The converter preserves transparency from your PNG. The resulting ICO works as a favicon, Windows application icon, or system icon.
When You'd Actually Use This
Creating website favicons
Your logo is a PNG but browsers need favicon.ico. Convert it to ICO format. Include 16x16 and 32x32 for browser tabs and bookmarks.
Building Windows applications
Windows executables need .ico files for application icons. Convert your app logo PNG to ICO. Include multiple sizes for different Windows views.
Customizing folder icons
Windows lets you set custom folder icons. Convert your PNG designs to ICO format. Apply them to organize folders visually.
Making desktop shortcuts
Custom shortcuts need custom icons. Convert PNG logos or images to ICO. Right-click shortcut properties to apply your custom icon.
Creating software installers
Installer packages need ICO icons. Convert your product logo to ICO format. The icon appears during installation and in Add/Remove Programs.
Designing browser themes
Custom browser themes may need ICO files. Convert PNG assets to ICO for theme packages. Works for Chrome, Firefox, and Edge themes.
What to Know Before Using
Square images work best.ICO icons are square. If your PNG is rectangular, it will be cropped or padded. Start with a square PNG for best results.
Include multiple sizes.Windows uses different sizes in different contexts. File Explorer shows 48px, taskbar shows 16px. Include 16, 32, 48, and 256 for full coverage.
Transparency is preserved.PNG alpha transparency converts to ICO transparency. This creates smooth edges instead of jagged borders. Essential for non-square designs.
256px is the max standard size.ICO format supports up to 256x256 pixels. Larger PNG files will be scaled down. For modern high-DPI displays, 256px provides enough detail.
Pro tip: For favicons, include at least 16x16 and 32x32. Modern browsers also support PNG favicons, but ICO provides best compatibility across all browsers including older versions.
Common Questions
What's the maximum PNG file size?
Most browsers handle uploads up to 10MB. For icon conversion, PNG files should be much smaller - typically under 1MB. Large files may process slowly.
Can I convert multiple PNGs at once?
This tool converts one PNG at a time. For batch conversion, use desktop software like IcoFX or online batch converters.
Does ICO support animation?
Standard ICO doesn't support animation. For animated icons, use GIF format. Windows cursors (.ani) support animation but require different tools.
Why include so many sizes?
Windows picks the best size for each context. Without multiple sizes, Windows scales the icon, which can look blurry. Pre-rendered sizes stay sharp.
Can I convert ICO back to PNG?
This tool only converts PNG to ICO. For the reverse, use an ICO to PNG converter. Note that multi-size ICOs will extract as separate PNG files.
What color depth does ICO support?
Modern ICO supports 32-bit color with alpha transparency. Older formats supported 24-bit, 8-bit, and even 1-bit. This tool uses 32-bit for best quality.
Will this work on Mac?
ICO is primarily a Windows format. Mac uses ICNS files. For Mac icons, convert PNG to ICNS using macOS tools or online ICNS converters.
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