ICO to WebP Converter
Convert ICO to WebP free — no upload, no signup
To convert ICO to WebP, drop your ICO images into the box below, click Convert, then Download. Fylo does the work inside your browser, so nothing is uploaded and there's no signup or watermark. It makes lightweight, transparent copies of icons for the web.
Drop images here
or tap to browse · paste with Ctrl+V · add many at once
Your files never leave your device
Higher keeps more detail; lower makes smaller files.
Advanced
Pixel-perfect output for graphics, screenshots and text.
Leave empty to keep the original size.
How to convert ICO to WebP
Add your ICO files
Drag and drop ICO files into the box, tap to choose them, or paste with Ctrl+V. You can add many at once.
Check the quality
Leave WebP quality at the default 80 or adjust the slider — higher keeps more detail, lower makes smaller files.
Convert and download
Click Convert, then download each WebP or get them all in one ZIP.
Why convert ICO to WebP?
Use ICO to WebP when you want to display an icon on a modern web page at a fraction of the file size while keeping its transparent background.
Does converting ICO to WebP affect quality or size?
The largest icon image is extracted and saved as WebP with alpha. Icons are already small, so savings are modest per file but add up when a page lists hundreds of them.
What's the difference between ICO and WebP?
ICO is the Windows icon format and the classic favicon.ico. One ICO file holds several square images (16 to 256 px) so each screen can use the sharpest size.
WebP is Google's web image format. It supports lossy and lossless compression, transparency and animation, and is typically 25–35% smaller than JPG at similar quality.
Learn more: ICO format guide · WebP format guide
| Property | ICO | WebP |
|---|---|---|
| Compression | PNG or uncompressed bitmap entries | Lossy (VP8) or lossless (VP8L) |
| Transparency | Yes | Yes — full 8-bit alpha |
| Animation | No | Yes |
| Colour depth | Up to 32-bit + alpha | 24-bit + alpha |
| Typical size, 12 MP photo | Max 256 × 256 px | ≈ 1.5–3 MB |
| Support | All browsers (favicons), Windows | All modern browsers (Safari 14+, 2020) |
| Best for | Favicons, Windows app and shortcut icons | Website images, e-commerce, blogs |
| Introduced | 1985 | 2010 |
Frequently asked questions
Does WebP keep the icon's transparency?
Yes. WebP supports full 8-bit alpha in both lossy and lossless modes.
Should I use lossless WebP for icons?
Usually, yes — icons have sharp edges and few colours, which lossless WebP stores efficiently and exactly. Enable Lossless in Advanced.
Are my ICO files uploaded to a server?
No. Fylo converts ICO to WebP entirely inside your browser using a background Web Worker, so your files never leave your device. That's also why it's fast — there's no upload or download wait.
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