Online Tool Store
ICO to WEBP
Extract every image size embedded in an .ico file and convert each one to WEBP, with transparency preserved, entirely in your browser.
🔒 This tool runs entirely in your browser. Your files are never uploaded to a server.
An icon file often holds several sizes at once — every one it contains is extracted and converted separately.
No file yet — choose an .ico and its images appear here as WEBP.
How the ICO to WEBP converter works
- Choose an .ico file.
- The tool reads the icon's binary structure to find every image size bundled inside it.
- Each one is decoded — whether it's stored as a PNG or a raw bitmap — and re-encoded as WEBP, ready to preview and download individually or all at once.
How ICO files are structured
An .ico file starts with a small header listing how many images it contains, followed by an entry for each one describing its size, color depth, and where its data sits in the file. Each embedded image is stored either as a full PNG or as a raw Windows bitmap (DIB) with an optional 1-bit transparency mask — this tool decodes both formats before converting to WEBP.
FAQ
Why does an .ico file produce multiple WEBP images?
Icon files commonly bundle several sizes of the same image together — 16×16, 32×32, 256×256, and more — so the app can pick the right one for each context. Every size embedded in the file is extracted and converted separately.
Does the transparency get preserved?
Yes — WEBP supports an alpha channel, so any transparent areas in the original icon (including 1-bit transparency masks used by older icon formats) are preserved in the converted image.
What if a size can't be converted?
A small number of very old icon formats (1-bit or 4-bit color depth) aren't supported and are skipped — the summary tells you exactly which sizes were skipped and why, rather than silently dropping them.
Is my icon file uploaded anywhere?
No. The ICO file is parsed and every image re-encoded entirely in your browser — nothing is sent to Online Tool Store or any other server.
How we compare
| Feature | Online Tool Store | CloudConvert | GIMP (desktop app) |
|---|---|---|---|
| Extracts every embedded size at once | ✓ | One size per conversion | ✓ |
| No install required | ✓ | ✓ | Desktop app install |
| File never uploaded to a server | ✓ | Uploads to server | ✓ |
For pulling every size out of an .ico file as WEBP in one step, the Online Tool Store ICO to WEBP converter does it right in your browser.