AVIF to ICO Converter
Instantly convert modern AVIF images into universally supported ICO files for website favicons and Windows apps.
Click to Select AVIF File
Upload your AVIF photo or graphic (.avif)
Configure Your Icon
Your AVIF has been automatically center-cropped into a perfect square.
Icon Settings
Transparency Supported
If your original AVIF had a transparent background, the output ICO will retain it perfectly.
How to Convert AVIF to ICO
Select Your File
Click the upload box and select the .AVIF logo or graphic you want to use as an icon.
Choose Icon Size
Our tool instantly frames the image into a perfect square. Select your desired resolution, from a classic 16x16 up to a sharp 256x256.
Save Your ICO
Click download. The tool manually builds a legitimate .ICO file structure instantly and saves it to your computer.
Why Use Our AVIF to ICO Tool?
Total Privacy Guarantee
Unlike legacy converters that force you to upload your files to an external server, Toolszu processes the AVIF locally using your browser's memory. Your file never leaves your computer.
Automatic Center-Crop
ICO files must be perfectly square. If you upload a rectangular AVIF image, our tool automatically finds the center and crops it perfectly without distorting or squishing your graphics.
Custom Built ICO Encoder
Web browsers cannot natively save images as `.ico` files. We wrote a custom Javascript encoder that physically structures the required ICO headers and pixel data, guaranteeing native Windows compatibility.
Preserves Transparency
AVIF supports transparent backgrounds, which is critical for website favicons and application logos. Our encoder natively preserves the alpha channel, so your icon looks great on dark or light backgrounds.
Frequently Asked Questions
The ICO format is a special image file format primarily used for computer icons in Microsoft Windows. It is also the universal standard format for website "favicons" (the small logo that appears in your browser tab next to the page title).
Historically, 16x16 or 32x32 pixels were the standard for simple browser tabs. However, modern displays, tablets, and smartphones require higher resolution. We recommend downloading the 256x256 px setting; modern browsers will automatically scale it down perfectly to fit their tabs.
No. Simply renaming the file extension does not alter the underlying data. An ICO file requires a specific 22-byte header to tell Windows and web browsers how to read the icon. Our tool restructures the file properly so it works.
Yes! Toolszu is completely free to use. There are no limits, no required sign-ups, and we never add watermarks to your downloaded files.