ICO to WebP Converter

Turn ICO icons and favicons into WebP images that keep their transparency - lossless by default, so edges stay crisp. For the widest support pick ICO to PNG.

How to convert ICO to WEBP

  1. Add your ICO files. Drop up to 50 ICO files into the box, paste one, or paste a website address to grab its favicon.
  2. Check the size. The largest image inside the icon is ticked. Click other thumbnails to add more sizes.
  3. Lossless or smaller. Lossless is on by default and keeps every pixel. Turn it off and set the quality for an even smaller file.
  4. Convert and download. Press Convert to WebP. One or two files download directly, more come as a ZIP.

Need the WebP as an icon again? WebP to ICO builds every size from it.

Lossless or lossy WebP?

Icons are made of flat colours and sharp edges.

Lossless WebP stores them exactly and is usually smaller than the same PNG - that is why it is the default here.

Lossy WebP gets smaller still, but can blur thin lines. Around 85 is a good compromise for big icons on a web page.

ICO vs WebP

ICOWebP
TransparencyYesYes, full alpha
Sizes per fileSeveralOne
CompressionNone or PNGLossless or lossy
Favicon supportEvery browserMost modern browsers
Best forWindows icons, favicon.icoImages on web pages

For a website favicon, keep a favicon.ico as a fallback - the Favicon Generator makes the full set.

Tips

  • Using Safari? Safari cannot write WebP yet. Use Chrome, Edge or Firefox for this one, or convert to PNG.
  • Only small sizes inside? Open Resize - small icons are enlarged pixel-sharp.
  • Want to see every layer first? The ICO Analyzer shows them all.

Frequently Asked Questions

Drop your ICO into the box and press Convert to WebP. The largest size is used and the WebP is lossless by default.

Yes. WebP supports full transparency, so soft edges and transparent corners stay exactly as in the icon.

Lossless keeps every pixel and is usually smaller than PNG. Lossy is smaller still but can soften thin lines - good for large icons used as pictures.

No. Your browser converts the icon. Only a pasted link from a site that blocks direct downloads goes through our server, and it is not stored.

Yes. Click the other thumbnails or press All. Each size gets its own file, named like icon-32x32.webp.

Most modern browsers accept it, but older ones only read ICO. Keep a favicon.ico too - PNG to ICO or the Favicon Generator make one.

Guides & Tutorials

All 40 guides
Guide How to Tell What Format an Image File Is (5 Easy Ways) Jul 8, 2026 · 9 min read Read Guide Old vs New ICO Files: Bitmap Icons, PNG Icons and Every Icon Type Explained Sep 28, 2026 · 7 min read Read Comparison ICO vs SVG: Which Icon Format Should You Use? Jun 2, 2025 · 4 min read Read