HEIC to ICO Converter
FileFlip converts HEIC to ICO entirely inside your browser, using ImageMagick compiled to WebAssembly. The file is never uploaded to a server: it is read off your disk, converted on your own machine, and saved back by the browser. That means no file-size limit, no queue and no account.
How do I convert an HEIC file to ICO?#
- Drop your HEIC file onto the converter at the top of this page, or click it to pick one from your computer. You can add as many as you like.
- Leave the target set to ICO and the conversion starts on its own. FileFlip downloads 14.1 MB of WebAssembly the first time and nothing after that, then runs ImageMagick on your own machine.
- Save the ICO file. Your browser writes it straight to your downloads folder, because there was never a server holding it.
Does converting HEIC to ICO lose quality?#
ICO is a lossless format, so nothing further is lost here, but nothing is recovered either. Whatever the HEIC encoder already threw away is gone, and the ICO file will usually be several times larger for exactly the same content.
Is it safe to convert HEIC files online?#
Yes, because nothing is uploaded. FileFlip converts HEIC files inside the browser tab you already have open, using WebAssembly builds of the same engines a desktop converter would install. Your file is read from your own disk into the page's memory, and no request carrying it is ever made.
You do not have to take that on trust. Open your browser's network panel, run a conversion, and you will see the engine come down and your file go nowhere. There is no upload, no server-side copy, no retention window, and no account tied to what you converted.
How FileFlip works lists every engine, its version and its download size, and shows how to check for yourself that nothing leaves your machine.
What HEIC to ICO actually does to the file#
Converting HEIC to ICO runs on ImageMagick, downloads 14.1 MB of WebAssembly the first time and nothing after that, writes a lossless file that cannot recover what the source already discarded, keeps transparency, and drops EXIF metadata, ICC colour profile, animation frames and extra images.
| Engine | ImageMagick |
|---|---|
| Conversion path | One step: HEIC → ICO |
| Downloaded to your browser | 14.1 MB, once, then cached by your browser |
| Quality | Lossless output, but nothing is recovered |
| You get back | One file |
| Where it runs | In a background worker, so the page stays responsive |
What survives the conversion
| What is in the file | This conversion | Why |
|---|---|---|
| EXIF metadata | Dropped | The target format has nowhere to put it. |
| ICC colour profile | Dropped | The target format has nowhere to put it. |
| Transparency | Kept | Carried through into the converted file. |
| Animation frames | Dropped | The target format has nowhere to put it. |
| Extra images | Dropped | The target format has nowhere to put it. |
Worth knowing before you start:
- ImageMagick is asked for a single image, so only the first frame, page, or icon size is read
What is an HEIC file?#
An HEIC file contains one or more images saved in the High Efficiency Image Format, the container Apple has used for iPhone and iPad photos since iOS 11 because it stores the same picture in roughly half the space of a JPEG.
Keep photos as HEIC while they stay on Apple devices, where the space saving is free and nothing loses quality.
Convert HEIC to JPG when a file has to leave the Apple ecosystem, which in practice means uploading it anywhere, emailing it to someone on Windows, or printing it.
What is an ICO file?#
An ICO file packs several copies of the same picture, each a different pixel size and color depth, into one Windows icon container so the operating system can pick whichever copy fits the taskbar, the desktop, or a File Explorer thumbnail.
Use ICO for Windows application icons, desktop shortcuts, and website favicons, where the operating system or browser needs to choose the right size automatically.
Convert ICO to PNG when the image needs to be edited freely, resized to a size the icon doesn't already contain, or used anywhere other than Windows or a browser favicon.
HEIC to ICO questions people ask#
Why are my iPhone photos HEIC instead of JPG?
iPhones save photos as HEIC by default because the format stores the same image in about half the space of a JPEG. Changing Settings, Camera, Formats to Most Compatible switches new photos to JPEG, though it does not convert the pictures already in your library.
Does converting HEIC to JPG lose quality?
Converting HEIC to JPG re-encodes the image with a different lossy codec, so a small amount of detail is discarded. At high JPEG quality the difference is not visible at normal viewing sizes, but the resulting file is usually larger than the HEIC it came from, and 16-bit colour is reduced to 8-bit.
Can Windows open HEIC files?
Windows 11 shows HEIC files only after the HEIF Image Extensions are installed from the Microsoft Store, and the HEVC Video Extensions they depend on are a paid download. Converting to JPG avoids the codec entirely and works on any version of Windows.
What happens to a Live Photo when I convert HEIC to JPG?
A Live Photo stores a still image and a short video as separate items. Converting the HEIC keeps the still frame and discards the motion, because JPEG holds exactly one image and has nowhere to put the video.