PNG to ICO Converter
Drop your PNG images here
Convert PNG to ICO — free, instant, no upload
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Standard favicon: 32×32. For high-DPI displays use 64×64 or larger. Windows icons use 256×256.
How to Convert PNG to ICO
Click Browse Files or drag & drop your PNG images onto the converter above. You can select multiple files for batch conversion.
Set the compression quality using the slider — higher values preserve more detail, lower values produce smaller files. Optionally enable resizing to change the output dimensions.
Click Convert to ICO and your files will be processed instantly in your browser. Download them individually or all at once.
🔒 All image conversions happen 100% in your browser. Your files are never uploaded to any server — completely private, free, and unlimited.
Why Convert PNG to ICO?
Create favicons for your website directly from PNG images — essential for browser tabs and bookmarks.
PNG vs ICO — Format Comparison
| Feature | PNG | ICO |
|---|---|---|
| Full Name | PNG (Portable Network Graphics) | ICO (Windows Icon) |
| Compression | Lossless | Lossless |
| Transparency | ✅ Yes | ✅ Yes |
| Animation | ❌ No | ❌ No |
| Color Depth | 24-bit or 32-bit (with alpha channel) | Up to 32-bit with alpha |
| Best For | Graphics with transparency, logos, icons, screenshots, text-heavy images, line art. | Website favicons, Windows application icons, desktop shortcuts. |
About the PNG Format
PNG is a lossless image format that preserves every pixel of your image perfectly, no matter how many times you save it. It supports full alpha transparency, making it the go-to choice for logos, icons, and any image that needs to be placed over different backgrounds. PNG files are typically larger than JPEG files for photographs, but they excel at preserving sharp edges, text, and flat-color graphics.
PNG was developed in 1996 as a patent-free replacement for the GIF format. It was designed to improve upon GIF by offering better compression, true color support, and full alpha transparency.
✅ Advantages
- Lossless compression — no quality loss
- Full alpha transparency support
- Perfect for screenshots, logos, and graphics
- Sharp text and edge preservation
❌ Disadvantages
- Larger file sizes than JPEG for photographs
- No animation support (use APNG or GIF instead)
- Overkill for simple photographs where lossy is acceptable
About the ICO Format
ICO is the standard icon format used by Microsoft Windows and web browsers for favicons (the small icons displayed in browser tabs). An ICO file can contain multiple image sizes and color depths within a single file, allowing the operating system or browser to choose the most appropriate version. For web developers, creating a proper ICO favicon is essential for browser compatibility and professional website appearance.
The ICO format was created by Microsoft for use in the Windows operating system, dating back to Windows 1.0 in 1985. While modern browsers also support PNG favicons, ICO remains the most universally compatible format for website icons.
✅ Advantages
- Universal favicon format for all browsers
- Can contain multiple sizes in one file
- Full transparency support
- Required for older browser compatibility
❌ Disadvantages
- Limited to icon-sized images
- Not suitable for general image storage
- Larger than necessary for single-size icons
- Somewhat outdated — PNG favicons are increasingly preferred
Frequently Asked Questions
Is it free to convert PNG to ICO?
Yes, completely free with no limits. Our converter runs in your browser — no uploads, no registration, no hidden costs.
Will I lose image quality?
ICO uses lossless compression, so your image quality will be perfectly preserved during conversion.
Are my files uploaded to a server?
No. All image conversions happen 100% in your browser using the Canvas API. Your files never leave your device, making this the most private way to convert images.
Can I convert multiple PNG files at once?
Yes! Simply drag and drop multiple files or select them with the file browser. All files will be converted in batch with a single click.