How to convert WEBP to ICO online
- 1
Drop your WEBP file
Drag your Web Picture Format file onto the box above, or click it to pick a file.
- 2
Wait a few seconds
Conversion starts on its own and runs on your device, not on a server.
- 3
Download your ICO
Click Download to save the Windows Icon Format file.
WEBP vs ICO: format overview
Web Picture Format
Google (On2 Technologies acquisition) · 2010
- Compression
- hybrid
- Color depth
- 8-bit
- Transparency
- Yes
- ✓ 30% smaller than JPEG, 26% smaller than PNG
- ✓ Supports both lossy and lossless
- ✗ Not supported in some older apps
Windows Icon Format
Microsoft · 1985
- Compression
- lossless
- Transparency
- Yes
- ✓ Multiple resolutions in a single file
- ✓ Required format for Windows app icons and favicons
WEBP magic bytes: 52 49 46 46 xx xx xx xx 57 45 42 50
ICO magic bytes: 00 00 01 00
Why convert WEBP to ICO?
WebP has become a common output format for web graphics pipelines, image optimization services, and CDNs. If your logo or site icon was exported as WebP, you may need to convert it to ICO to use it as a favicon — browsers and operating systems still use ICO as the standard favicon container.
ICO bundles multiple image resolutions (16×16, 32×32, 48×48 pixels) into one file, letting the browser pick the appropriate size depending on the context: browser tab, bookmark bar, home screen shortcut, or Windows taskbar pinned site. Converting WebP to ICO handles both the format translation and the downsizing automatically.
For the conversion to look good, the source WebP should be a square graphic — a logo, icon, or simple mark. Photographs and complex scenes don't work well at icon sizes because the detail becomes unreadable at 16×16 pixels. Transparent backgrounds in WebP (WebP supports full alpha) translate cleanly into ICO's transparency support. After generating the ICO, validate it with a favicon checker or RealFaviconGenerator to confirm it renders correctly across Chrome, Firefox, and Safari before deploying it to production.
Quality & file size: WEBP to ICO
Typical sizes: WEBP 1–3 MB (12MP photo); ICO 10–100 KB (multi-size icon).
ICO will not bring back detail that WEBP compression already removed, but it adds no further loss — handy when you need to edit the image.
Frequently asked questions
Can I use a WebP with a transparent background to make a favicon?
What size should my WebP be before converting to ICO?
Your WEBP file never leaves this tab — FormatDrop has no endpoint that receives file data. How it works