Convert PNG to ICO Online
PNG is a lossless raster image format built to replace GIF with better compression, full alpha transparency, and broad color profile support. ICO files bundle multiple raster icon sizes in a single container for Microsoft Windows, typically ranging from 16×16 to 512×512 pixels. AnyConvert converts PNG to ICO securely without installing desktop software.
PNG to ICO Converter
Convert your PNG files to ICO format quickly and easily. Upload your file and download the result.
Max file size: 50MB
Why convert PNG to ICO?
Switching from PNG helps you avoid larger file sizes than modern lossy formats for photographic images. ICO excels at stores multiple icon resolutions and color depths in a single asset, making it a better fit when clients or platforms expect windows desktop application icons.
Windows Icon File also offers native integration with windows executables, installers, and shortcuts. That means your converted files stay useful for windows desktop application icons and favicons for legacy browsers that still expect .ico files.
PNG strengths
- Lossless compression that preserves sharp edges and text perfectly
- Full alpha transparency support, including partial transparency (alpha channel)
- Widespread browser and operating system support without additional codecs
ICO advantages
- Stores multiple icon resolutions and color depths in a single asset
- Native integration with Windows executables, installers, and shortcuts
- Supports full alpha transparency for crisp rendering against any background
Key differences
| Feature | PNG | ICO |
|---|---|---|
| Compression | Lossless | Lossy or lossless |
| Transparency / Alpha | Supports alpha channel | Supports alpha channel |
| Typical file size | Moderate (lossless compression) | Varies (depends on chosen codec) |
| Best suited for | User interface assets, logos, and icons that need crisp edges and Charts, diagrams, and text-heavy graphics shared online | Windows desktop application icons and Favicons for legacy browsers that still expect .ico files |
| Standard | Open, royalty-free specification | Proprietary or partially restricted |
Before you convert
- Keep a backup of your original file before converting so you can roll back if needed.
- Export any critical metadata (EXIF, IPTC, ID3, or captions) because ICO may not retain it.
- Review known pain points: Does not support embedded animation (unlike GIF or APNG variants). Adjust your source file accordingly.
Quality tips
- Use the resize controls to match the pixel dimensions your project actually needs.
- Download the result immediately and open it in the target application to verify everything matches expectations.
Where ICO fits best
Once you have the converted file, you can plug it straight into windows desktop application icons, favicons for legacy browsers that still expect .ico files, and distribution packages that must include multiple dpi variations. ICO is the format teams expect in those environments, so you spend less time re-exporting or explaining compatibility issues.
Common ICO use cases
- Windows desktop application icons
- Favicons for legacy browsers that still expect .ico files
- Distribution packages that must include multiple DPI variations
Tools that open ICO
- GIMP
- IcoFX
- RealWorld Icon Editor
Frequently asked questions
Does converting PNG to ICO reduce quality?
No—ICO preserves the original fidelity. You still want to open the converted file once to confirm fonts, colors, or audio loudness survived the transfer.
Is there a file size limit for converting PNG?
Yes—uploads up to 150 MB convert reliably in the browser. For larger assets, split them into smaller segments first so the process stays responsive.