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ICNS to WebP converter, without the upload.

Turn ICNS icons into WebP. It is converted in your browser, so the file never leaves your device.

Drop ICNS files here

or choose from your computer paste with Ctrl V

Ready · other file types work too0 bytes uploaded, ever

Convert to

How to convert ICNS to WebP

  1. Add your ICNS icons

    Drop ICNS files onto the box above, or click it to choose them. ToAny reads the file's contents to detect the type, so a wrong extension does not matter.

  2. WebP is already chosen

    Press Convert. Open Options first if you want to change the defaults. The work happens in this tab.

  3. Download

    Save the WebP, or download everything as one ZIP if you converted several files.

Why ToAny

  • Private by construction

    The ICNS to WebP converter is part of this page and runs inside your browser. Your icons are never sent to ToAny or to anyone else.

  • No upload, no queue

    Nothing has to travel to a server and back, so the conversion starts the moment you press Convert, even on a slow connection.

  • Free, without an account

    No sign-up, no email address and no watermark. Add several files and download them together as a ZIP.

ICNS to WebP: what to expect

ICNS opens only on a Mac and in icon tools. WebP is smaller than JPG or PNG at similar quality and keeps transparency. ICNS is at home in macOS application and folder icons; WebP is the usual choice for images on websites.

The defaults suit most files. Under Options you can set the quality, aim for a target file size and resize the result.

The WebP encoder is a WebAssembly module that downloads the first time you convert to WebP and is cached afterwards. If the icon file holds several sizes, the largest one is converted.

ICNS vs WebP

ICNS

macOS icon

ICNS is the icon container of macOS. One file holds the same icon at many sizes, from 16 to 1024 pixels including Retina versions, each with transparency. Every Mac app carries one in its bundle.

Opens in macOS Preview and Finder, Xcode and icon editors; not browsers

ICNS converter
WEBP

WebP image

WebP is Google's image format for the web. It is typically a quarter to a third smaller than JPG or PNG at similar quality and supports both transparency and animation. Browsers handle it well; older editors, printers' portals and some messaging apps do not.

Opens in All current browsers; many older desktop apps and upload forms do not accept it

WebP converter
ICNS compared with WebP
ICNSmacOS iconWEBPWebP image
Stands forApple Icon ImageWebP
TypeRaster image (icon)Raster image
CompressionLosslessLossy or lossless
TransparencyYesYes
AnimationNoYes
IntroducedAround 2001, by Apple2010, by Google
Opens inmacOS Preview and Finder, Xcode and icon editors; not browsersAll current browsers; many older desktop apps and upload forms do not accept it
Best formacOS application and folder iconsImages on websites
File extension.icns.webp

Questions

Are my icons uploaded anywhere?

No. The ICNS to WebP conversion runs inside your browser, on your own phone or computer. The file is not sent to ToAny or to anyone else.

Does converting ICNS to WebP reduce quality?

A little: ToAny writes WebP in its lossy mode, so a small amount of detail is traded for a much smaller file. At the default setting the difference is hard to notice. You can raise the quality under Options; there is no lossless setting.

Can I convert several ICNS files at once?

Yes. Add as many as you like, convert them together and download each result or all of them as one ZIP.

How do I convert ICNS to WebP on Windows, Mac, iPhone or Android?

The steps are the same everywhere because ToAny runs in the web browser: open this page in a current version of Chrome, Edge, Safari or Firefox, add the ICNS file, press Convert and save the WebP. There is nothing to install.

Is there a file size limit?

Pictures of up to 120 megapixels are accepted (for example 12,000 by 10,000 pixels); a larger one is refused with a message. Beyond that the limit is your device's memory, since nothing is uploaded; a computer copes with large files better than a phone.