How to convert WebP to ICO
- Click Choose files or drop your WebP images into the box above — up to 10 at a time on the free plan.
- Optionally choose which icon sizes to include, from 16×16 up to 256×256 pixels.
- Conversion starts right away. Download each ICO file, or click Download all to get them as one ZIP.
WebP vs ICO
| WebP | ICO | |
|---|---|---|
| Compression | Lossy or lossless | Lossless |
| Transparency | Yes | Yes |
| Animation | Yes | No |
| Colors | 8 bits per channel, full alpha | Several sizes (16×16 to 256×256) in one file, full alpha |
| File size (photos) | Very small | Small |
| Opens on | All modern browsers (Chrome, Edge, Firefox, Safari 14+); some older apps and editors cannot open it | Windows, every browser (as a favicon) |
| Best for | Images on websites, where smaller files mean faster pages | Website favicons and Windows application or shortcut icons |
About WebP and ICO
What is WebP?
WebP was created by Google to make web pages load faster. Lossy WebP is typically 25–35% smaller than a JPG of similar quality, and lossless WebP is about a quarter smaller than PNG. It also supports transparency and animation. Many websites now serve WebP automatically, which is why images you download often end up as .webp files that older software refuses to open.
- Much smaller than JPG and PNG
- Transparency and animation
- Lossy and lossless modes
- Not accepted by some upload forms, print shops and older apps
- Windows Photo Viewer and older Photoshop versions cannot open it
What is ICO?
An ICO file bundles several square versions of the same icon — typically 16×16, 32×32 and 48×48 pixels, up to 256×256 — so Windows and browsers can pick the sharpest one for each place it is shown. It is still the most compatible format for a website favicon.
- Several sizes in one file
- Works as a favicon in every browser
- Transparency
- Only square images up to 256×256
- Not useful outside icons
Why GlideConvert?
- Private by design. Your files are converted on your own device by your browser — they are never uploaded to a server. That keeps them private, avoids upload waits and means there is no queue.
- Fast. Images convert in a fraction of a second; video uses your device’s hardware encoder.
- Free. No sign-up, no watermark. 10 images, 5 audio files or one video at a time — Pro lifts the limits and removes ads.
Frequently asked questions
Will converting WebP to ICO reduce quality?
No. ICO is lossless, so the result looks exactly like your WebP. Converting cannot bring back detail the WebP compression already removed, though, and the ICO file will usually be bigger.
Is transparency kept?
Yes. Transparent and semi-transparent areas are kept as they are.
Why do images I download save as WebP?
Many websites now deliver images as WebP because the files are smaller and pages load faster. Your browser saves the image exactly as it was delivered — which is why you end up with .webp files that older apps refuse to open.
Which sizes should a favicon ICO contain?
A website favicon usually contains 16×16, 32×32 and 48×48 pixel images; Windows app and shortcut icons also use 256×256. All of these are selected by default. For a complete favicon set (PNG, Apple touch icon and manifest) use the Favicon generator.
Can I convert several WebP images at once?
Yes. The free plan handles 10 images at a time, and you can download everything as a single ZIP. Pro removes the batch limit, converts files in parallel and supports files up to 4 GB.
Are my files uploaded to a server?
No. GlideConvert runs entirely in your browser: images are processed with the browser’s built-in codecs and WebAssembly, video and audio with hardware-accelerated WebCodecs (or a WebAssembly build of FFmpeg for older formats). Nothing is sent anywhere — you can even disconnect from the internet once the page has loaded.
Does it work on iPhone, Android, Mac and Windows?
Yes. It works in any up-to-date browser — Chrome, Edge, Safari, Firefox or Samsung Internet — on phones, tablets and computers, with nothing to install. On phones, extremely large images may be scaled down to fit within the browser’s memory limit; you will see a note if that happens.