Convertr

AVIF to ICO Converter

Convert your Audio, Video and other Files from one format to another online for free!

Convert image files

AVIF

AVIF is a modern image format based on the AV1 video codec. It offers much better compression than JPG at similar quality and supports transparency, high dynamic range, and wide color. Current browsers support AVIF, but some older apps and editors cannot open it yet.

ICO

ICO is the icon format of Microsoft Windows. A single ICO file can hold several images in different sizes, such as 16x16, 32x32, and 256x256 pixels. ICO files are used for application icons and website favicons.

What happens when AVIF becomes ICO

Source format

AVIF can use lossy or lossless compression and supports transparency and high bit depth.

Target format

ICO is the image source or target format for this conversion path.

What changes

The AVIF pixels are decoded and written using ICO compression and color capabilities.

What is preserved
Pixel dimensions and visible composition are preserved unless resize or crop settings are selected.
What may be lost
ICO cannot preserve transparency. Transparent pixels must be flattened against a background color.
Codec and quality implications
Color profile handling, bit depth, chroma sampling, and compression settings can change appearance or file size.
Realistic limitations
Multi-page, layered, animated, camera-raw, or very large images may be flattened, reduced to one frame, or rejected if the decoder cannot safely read them.

Conversion steps

  1. Upload a AVIF file no larger than 1 GB.
  2. Confirm that ICO is selected as the target.
  3. Download the ICO file and check the result before deleting your source.

Troubleshooting

The AVIF file is rejected or will not open.
Confirm that the file is not empty, password-protected, or corrupt and that its real format matches the extension.
The ICO file is larger than expected.
Choose a more efficient codec or lower quality setting when available. Lossless and uncompressed targets are often larger by design.
Transparency, color, or animation changed.
Choose a target that supports the needed feature and keep the original file; JPG cannot store transparency or animation.

Privacy and file retention

Uploads and converted files are processed automatically and irreversibly deleted within 24 hours. You can delete them sooner with the delete control. Convertr does not read, mine, sell, or manually review file contents.

Read the privacy policy

Useful alternatives

AVIF to AVIFUse this when AVIF better matches the app, codec, or editing workflow you need.AVIF to BMPUse this when BMP better matches the app, codec, or editing workflow you need.ICO to AVIFUse this when AVIF better matches the app, codec, or editing workflow you need.