Convert AVIF to ICNS on Mac
Select the AVIF files in Finder, press ⌥ F, choose ICNS and press Return. FileFlip saves each ICNS next to its original and works without an internet connection.
How to convert AVIF to ICNS with FileFlip
Select the AVIF files
In Finder or on the Desktop. One file, or a whole folder with ⌘ A.
Press ⌥ F
FileFlip opens next to the selection and lists the formats it can make from AVIF. Type “ICNS” to jump to it.
Choose ICNS and press Return
The ICNS files appear next to the originals with the same names. The AVIF files stay as they are.
AVIF and ICNS
AVIF is still new, so plenty of apps and upload forms can’t open it. ICNS is what macOS uses for app and folder icons.
What changes when you convert
- ICNS is lossless, so the image is saved without further loss.
- ICNS holds icon sizes up to 1024 × 1024 pixels, so a square source image of at least that size works best.
| Property | AVIF | ICNS |
|---|---|---|
| Full name | AV1 Image File Format | Apple Icon Image |
| Made by | Alliance for Open Media | Apple |
| Compression | Lossy or lossless (AV1) | Usually PNG inside |
| Transparency | Yes | Yes |
| Best for | Small, high-quality images on the web | Mac app, folder and file icons |
| Opens in | Current versions of Chrome, Firefox and Safari; macOS 13 and later; many apps can’t open it yet | macOS; rarely anything else |
| File extension | .avif | .icns |
| In FileFlip | Opens and saves | Opens and saves |
Other ways on a Mac
For one file now and then you may not need FileFlip. These work with what’s already on your Mac.
Preview
Open the AVIF in Preview, choose File → Export, pick ICNS from the Format menu and click Save. If ICNS isn’t listed, hold Option while you click the Format menu. For several files, open them together, select all thumbnails in the sidebar and choose File → Export Selected Images.
Good for a few files now and then.
Terminal
The sips command converts images in place or into a new file.
sips -s format icns image.avif \
--out image.icnsBuilt into macOS. Use a square image; run sips --formats to check what your macOS version supports.
Questions about AVIF and ICNS
Does converting AVIF to ICNS lose quality?
ICNS is lossless, so the image is saved without further loss.
Can I convert many AVIF files at once?
Yes. Select them all in Finder, press ⌥ F and choose ICNS. Progress moves to the menu bar, so you can close the panel and keep working.
What size should the source image be?
Square, and ideally 1024 × 1024 pixels, the largest size an ICNS file holds.
Where is the ICNS file saved?
Next to the original, with the same name and the .icns extension. The AVIF file isn’t changed. In Settings you can choose a different folder instead.
Can I convert ICNS back to AVIF?
Yes, FileFlip converts ICNS to AVIF as well.
Are my files uploaded anywhere?
No. FileFlip converts files on your Mac and works with the internet turned off.
Convert a whole folder of images at once
FileFlip also handles video, audio, PDFs, documents and data files. Requires macOS 14 Sonoma or later.
Coming soon for Mac