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HEIC to ICNS converter, without the upload.

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

Drop HEIC 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 HEIC to ICNS

  1. Add your HEIC photos

    Drop HEIC (HEIF) 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. ICNS is already chosen

    Press Convert. There is nothing else to set. The work happens in this tab.

  3. Download

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

Why ToAny

  • Private by construction

    The HEIC to ICNS converter is part of this page and runs inside your browser. Your photos 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.

HEIC to ICNS: what to expect

HEIC does not open in most browsers, on many Windows PCs or in a lot of upload forms. ICNS is what macOS expects for app and file icons. HEIC is at home in saving storage on Apple devices; ICNS is the usual choice for macOS application and folder icons. ICNS cannot bring back detail that HEIC compression already removed; it simply stores the result without further loss, in a larger file.

Most browsers other than Safari cannot read HEIC themselves, so a HEIC decoder of under 1 MB is downloaded the first time and kept in the browser cache. The picture is fitted into a square, with empty margins if it is not square, and written at 16, 32, 64, 128, 256 and 512 pixels (and 1024 when the source is at least that large), each as a PNG inside the icon file.

HEIC vs ICNS

HEIC

HEIC photo

HEIC is what iPhones have saved photos as since iOS 11 in 2017. It uses the HEVC video codec to store a photo in roughly half the space of a JPG. Outside Apple's own apps, support is patchy: Windows needs an extension and most websites refuse it.

Opens in iPhone, iPad and Mac natively; Windows needs extra codecs; most browsers cannot display it

HEIC converter
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
HEIC compared with ICNS
HEICHEIC photoICNSmacOS icon
Stands forHigh Efficiency Image ContainerApple Icon Image
TypeRaster imageRaster image (icon)
CompressionLossy (HEVC)Lossless
TransparencyYesYes
AnimationImage sequencesNo
Introduced2015, by the Moving Picture Experts Group (adopted by Apple in iOS 11)Around 2001, by Apple
Opens iniPhone, iPad and Mac natively; Windows needs extra codecs; most browsers cannot display itmacOS Preview and Finder, Xcode and icon editors; not browsers
Best forSaving storage on Apple devicesmacOS application and folder icons
File extension.heic, .heif, .hif.icns

Questions

Are my photos uploaded anywhere?

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

Does converting HEIC to ICNS reduce quality?

No further quality is lost: ICNS stores the decoded pixels exactly. It cannot restore what HEIC compression already discarded, and the file will be larger.

Can I convert several HEIC 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 HEIC to ICNS 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 HEIC file, press Convert and save the ICNS. 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.