Why convert WebP to ICO?

Windows and browsers require the .ico format specifically for application icons and favicons — no other format is accepted, regardless of how good WebP's own compression already is.

Can I generate a multi-size ICO from a WebP source?

Yes. The ICO output defaults to a multi-size package covering 16, 32, 48, 64, 128, and 256 px from your single WebP image, or you can pick a single size from the dropdown.

Does WebP's transparency survive in the ICO?

Yes, cleanly. Every ICO frame this tool writes is genuine PNG-compressed image data inside a real ICO container (ICONDIR plus one entry per size), and PNG supports the same kind of full alpha channel WebP does, so transparency carries through to every icon size.

What happens if my source WebP is animated?

Only the first frame is used. Every size in the ICO package is generated from that one frame; the animation itself is not carried into the icon.

Are my files uploaded?

No. Conversion runs locally in your browser and does not upload your file to Looty Tools servers.

What is validated before conversion?

The file must actually be a WebP — the tool checks the RIFF/WEBP signature bytes, not just the filename or extension, before decoding.

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WebP to ICO Converter

Convert WebP images to a Windows ICO icon directly in your browser — generate a single size or a multi-size icon package.

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WebP to ICO processes files locally in your browser.

What WebP to ICO conversion does

Convert a WebP image into a Windows ICO icon package directly in your browser. Because ICO frames here are PNG-compressed internally, WebP's alpha channel carries over cleanly — one of the few conversions on this site where the target format keeps everything the WebP source already had, transparency included.

How to convert WebP to ICO

Choose a WebP file.
Pick a single icon size, or leave the default multi-size package selected.
Select Convert & download.
Save the .ico file from your browser downloads.

Why use this conversion

ICO is simply the format Windows — and browsers, for favicons — require for icons. A square WebP image, transparency included, becomes a real multi-resolution .ico ready to install as an app icon or favicon.

Transparency and output quality

Each embedded size keeps the source WebP's alpha channel intact, because every ICO entry is genuine PNG-compressed image data rather than a legacy uncompressed bitmap — WebP's transparency and ICO's PNG-based frames are a natural match. Each icon entry uses PNG compression internally, so a single-size ICO from a WebP source stays reasonably compact; the default multi-size package is larger since it bundles six separately-encoded resolutions from the one image.

Privacy and local processing

Processing occurs locally in the browser.
Files are not uploaded to Looty Tools for conversion.
Converted files remain on your device.

Limits and known issues

Input: WebP (.webp) only, up to 25.0 MB and 8,192 px per side.
Each icon size is produced by resizing the full image onto a square canvas, so a non-square WebP source gets stretched to fit — square source images produce the cleanest icons.
If the source WebP is animated, only its first frame is used to generate every icon size; the animation is not preserved anywhere in the ICO package.
Metadata is not preserved in the downloaded file.

Related tools

Guides

WebP to ICO FAQ

Why convert WebP to ICO?: Windows and browsers require the .ico format specifically for application icons and favicons — no other format is accepted, regardless of how good WebP's own compression already is.
Can I generate a multi-size ICO from a WebP source?: Yes. The ICO output defaults to a multi-size package covering 16, 32, 48, 64, 128, and 256 px from your single WebP image, or you can pick a single size from the dropdown.
Does WebP's transparency survive in the ICO?: Yes, cleanly. Every ICO frame this tool writes is genuine PNG-compressed image data inside a real ICO container (ICONDIR plus one entry per size), and PNG supports the same kind of full alpha channel WebP does, so transparency carries through to every icon size.
What happens if my source WebP is animated?: Only the first frame is used. Every size in the ICO package is generated from that one frame; the animation itself is not carried into the icon.
Are my files uploaded?: No. Conversion runs locally in your browser and does not upload your file to Looty Tools servers.
What is validated before conversion?: The file must actually be a WebP — the tool checks the RIFF/WEBP signature bytes, not just the filename or extension, before decoding.