Convert WebP to ICO
Your files are processed on your device. We never upload them.
How to convert WebP to ICO
- 01A ▸Choose your WebP image, or drop it on the page.
- 02A ▸Tick the icon sizes you need. The usual four are already ticked.
- 03A ▸Select Make ICO, then download the icon.
About WebP to ICO
Where WebP files come from
Logos and graphics saved from websites often arrive as WebP. Windows shortcuts, folder icons, and older favicon setups need an .ico file, and most icon makers don't accept WebP.
What changes
- The picture is drawn at each size you tick (16 to 256 pixels) and every size is stored in one .ico file, so each place that shows the icon can pick the size it needs.
- Transparency is kept in every size.
- A picture that isn't square is fitted inside the square with see-through space around it.
- Each size is stored as a PNG inside the icon, which Windows Vista and later, and every browser, read.
- An animated WebP gives a still icon of its first frame.
Measured
A 1024 by 1024 pixel logo saved as WebP, and our 12-megapixel sample photo as WebP, made into icons with the 16, 32, 48, and 256 pixel sizes in Chrome on a laptop. Phone timings are still to be measured.
| Logo, WebP to ICO | 20 KB to 17 KB |
|---|---|
| Photo, WebP to ICO | 222 KB to 66 KB |
| Time for the logo in Chrome (laptop) | 0.1 seconds |
| Time for the photo in Chrome (laptop) | 0.4 seconds |
In your browser
Every current browser reads WebP and draws each icon size itself. The icon file is put together by the page's own code, so nothing extra is downloaded.
Limits
- The largest size an ICO file can hold is 256 by 256 pixels. For bigger app icons, use WebP to PNG.
- Very old programs (before Windows Vista) can't read icon sizes stored as PNG.
- Fine detail in a large picture disappears at 16 pixels. Simple shapes and bold lines make the clearest small icons.
Other options
- WebP to PNG: for app icons larger than 256 pixels, or a PNG favicon.
- WebP to SVG: a vector version of a logo that stays sharp at any size.
- PNG to ICO: the same tool for PNG images.
Questions
What sizes should a favicon ICO have?
16 and 32 pixels cover browser tabs and bookmarks. 48 is used by Windows, and 256 by large Windows icons. The tool ticks those four for you.
Are my images uploaded?
No. Your files are processed on your device. We never upload them.
Does the icon keep transparency?
Yes. See-through parts of the WebP stay see-through in every size, so the icon sits cleanly on any background.
What happens if my image isn't square?
Icons are square, so the picture is shrunk to fit and centred, with see-through space above and below or at the sides. Nothing is cut off. For a different framing, crop the image to a square first.
Can I use the ICO as a website favicon?
Yes. Name it favicon.ico and put it in your site's root folder, or link it with a link rel="icon" tag. Every browser reads ICO files.
Does it work with animated WebP?
Only the first frame is used, because icons can't move. The result tells you when an image was animated.