Convert ICO to AVIF on Mac
Convert ICO files to AVIF format on your Mac with Jollycat. Windows icon format containing multiple image sizes in a single file. Required for Windows application icons and favicons. All processing runs locally on your Mac — no cloud processing and no uploads required for conversion.
ICO vs AVIF
| Property | ICO | AVIF |
|---|---|---|
| Type | lossless | both |
| Compression | PNG or BMP embedded | AV1-based lossy/lossless |
| Transparency | Yes | Yes |
| Animation | No | Yes |
| Bit Depth | 8/32-bit | 8/10/12-bit |
| File Extension | .ico | .avif |
| Key Advantage | Multiple sizes in one file | Best compression ratio available |
How to Convert ICO to AVIF on Mac
Open your ICO file
Drag and drop your .ico file onto the Jollycat icon in your macOS dock or menu bar. Jollycat instantly detects the format.
Select AVIF format
Pick AVIF from the list of output formats. Optionally adjust quality, resolution, or compression settings.
Convert and save
Click Convert and Jollycat processes the file instantly on your Mac. No uploads required, no waiting — everything runs locally on Apple Silicon.
When to Convert ICO to AVIF
AVIF advantages
Best compression ratio available. HDR and wide color gamut.
ICO limitations
Limited to 256x256. Windows-centric format.
Common use cases
Next-gen web images, HDR photography, Bandwidth optimization.
ICO to AVIF Conversion Tips
AVIF uses AV1 intra-frame coding, typically 20% smaller than WebP and 50% smaller than JPEG.
Frequently Asked Questions
Is the ICO to AVIF conversion free?
Jollycat is a one-time purchase for $9.99. Once purchased, you can convert ICO to AVIF and use all 1,650+ conversion paths with no limits.
Does converting ICO to AVIF require an internet connection?
No. Jollycat processes everything locally on your Mac. Your ICO files never leave your device — all conversion happens offline using Apple Silicon.
Can I batch convert multiple ICO files to AVIF?
Yes. Drag multiple ICO files onto Jollycat and convert them all to AVIF at once. Batch processing is built in.
Ready to Convert ICO to AVIF?
Jollycat handles ICO to AVIF conversion and 1,650+ other format conversions. All offline on your Mac.
Get Jollycat for Mac