ICO to AVIF Converter

Convert ICO to AVIF free and get every size inside the icon as separate AVIF images with transparency preserved. AVIF is the newest web image format, typically producing even smaller files than WEBP. Upload up to 20 ICO files or paste a favicon URL. Prefer wider compatibility? Use the ICO to PNG or ICO to WEBP converters, or inspect icons first with the Icon Analyzer.

Drop your .ico files here, or click to select them manually!

Up to 20 ICO files, max 5MB each.

Convert from URL

Download all files as an archive:

or download them individually:

Your AVIF files will appear here,

once you convert them.



Popular Tools: ICO to PNG ICO to WEBP AVIF to ICO Icon Analyzer PNG to ICO

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Convert ICO from URL

Enter the URL of the ICO file you want to convert to AVIF:

How to Convert ICO Files to AVIF

  1. From computer: Drag and drop your ICO file onto the converter or click to browse and select it manually.
  2. Convert from URL: Click the "Convert from URL" link, paste the direct URL to an ICO file (like a favicon), and click Convert.
  3. Download: Once converted, download individual AVIF files for each icon size contained in the ICO.
Need sample files to test? Browse the ICO sample files.

Why Convert ICO to AVIF Format?

ICO files are designed for Windows icons and favicons, but AVIF is the newest and most efficient web image format - built on the AV1 codec, it typically beats both PNG and WEBP on file size at the same visual quality. Converting ICO to AVIF lets you:

  • Serve the smallest possible icon graphics on your website, improving page speed and Core Web Vitals.
  • Keep full transparency - the alpha channel from your icon is preserved.
  • Use modern picture element fallback chains: AVIF first, then WEBP, then PNG.
  • Extract every embedded icon size as a separate AVIF file in one pass.
All current browsers support AVIF, but for older software use the ICO to PNG converter. To go the other way, try AVIF to ICO.

FAQ - ICO to AVIF Converter

Is this ICO to AVIF converter free to use?

Yes! This ICO to AVIF converter is completely free with no hidden charges, watermarks, or subscription fees. Convert as many files as you need without any cost.

What is AVIF and why use it?

AVIF is a modern image format based on the AV1 video codec. It typically produces smaller files than both PNG and WEBP at the same visual quality, with full transparency support. All current major browsers support AVIF.

Will I get multiple AVIF files from one ICO?

Yes! ICO files typically contain multiple sizes (16x16, 32x32, 48x48, 256x256, etc.). Our converter extracts each size as a separate AVIF file, giving you all available resolutions from the original icon.

Is transparency preserved during conversion?

Yes, all transparency from your ICO file is fully preserved in the AVIF output using an alpha channel. Your converted images will have the same transparent areas as the original icon.

Can I convert a website's favicon to AVIF?

Absolutely! Use the "Convert from URL" feature to paste any favicon URL (usually at domain.com/favicon.ico) and extract all icon sizes as AVIF files.

Can I convert multiple ICO files at once?

Yes, batch conversion is supported. Upload up to 20 ICO files simultaneously and convert them all to AVIF format in one operation. When you convert more than 2 files, a ZIP archive with a README is created automatically.

How can I verify my ICO file before converting?

Use our Icon Analyzer to inspect your ICO file's contents, including all embedded sizes, color depths, and compression details before conversion.

What if the conversion doesn't work?

Ensure your ICO file is valid and not corrupted. You can verify it with our Icon Analyzer. If issues persist, try a different browser or contact our support team.

Icon Conversion Stats

Recently Converted Icons
30 Live trend (15m)
293 Icons Last hour
12am (257) Peak hour
64.7M Total Icons converted

Analyze Your Icons with the Icon Analyzer

Before converting, check what's inside your ICO files. Our Icon Analyzer reveals all embedded sizes, color depths, and transparency information to help you understand exactly what you're working with.