What is ICO Converter?
Free online ICO converter. Convert PNG to ICO format for favicons. 16x16, 32x32, 48x48 and multi-size ICO files. Suitable for web development and branding.
▶Use Cases4 scenarios
- ◆Website favicon
- ◆App icons
- ◆Bookmark icons
- ◆Brand identity
▶How to Use4 steps
- 1Upload PNG
- 2Choose output size
- 3Click Convert
- 4Download ICO
▶Features4 features
- ✓Multi-size
- ✓One-click
- ✓Favicon-ready
- ✓Free
▶FAQ7 questions
What is an ICO converter?
An online image-to-icon converter. Input: PNG, JPG, or other image formats. Output: Windows icon (.ico) files in 16x16, 32x32, and multi-size variants. Used for website favicons, desktop app icons, and folder icons. All conversion runs locally in your browser.
What ICO sizes do I need?
16x16 and 32x32 are recommended for browser tabs and bookmarks.
Is transparency preserved?
Yes, ICO supports alpha channels.
What image formats are supported?
Supports PNG/JPG to ICO for website favicons.
How large of an image can I use?
Up to 10MB per file, resolution limit 4000×4000px.
Are images uploaded to a server?
No. All processing happens locally in your browser. Images never leave your device.
Can I process multiple images at once?
Currently one image at a time.