AVIF to ICO Converter

Easily convert AVIF to ICO online — fast and free

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Format Freedom

Break free from AVIF compatibility issues — ICO is supported by a much wider range of tools, devices, and operating systems.

Straightforward Steps

No learning curve — upload your AVIF file, pick ICO as output, and download. The entire process is designed for simplicity.

Privacy Protection

Your uploaded AVIF files are removed right after conversion, and ICO results are deleted from servers within 24 hours — your data stays private.

How to convert AVIF to ICO

1

Select files from Computer, Google Drive, Dropbox, URL or by dragging it on the page.

2

Choose ico or any other format you need as a result (more than 200 formats supported)

3

Let the file convert and you can download your ico file right afterwards

About formats

AVIF (AV1 Image File Format) is a modern image format derived from the AV1 video codec, developed by the Alliance for Open Media and specified in February 2019. The format leverages the intra-frame coding tools of AV1 — a royalty-free video codec backed by Google, Apple, Microsoft, Amazon, Netflix, and other major technology companies — to compress still images with substantially higher efficiency than JPEG, PNG, or even WebP. AVIF stores images in the HEIF (High Efficiency Image File Format) container, supporting both lossy and lossless compression, HDR (high dynamic range) with wide color gamuts up to 12-bit depth, alpha transparency, and animated sequences. At equivalent visual quality, AVIF files are typically 30-50% smaller than WebP and 50-70% smaller than JPEG, representing the largest compression improvement in mainstream image formats in over a decade. One advantage is exceptional compression efficiency — AVIF delivers visually indistinguishable images at dramatically lower file sizes, directly reducing bandwidth consumption and improving page load times for web content. The royalty-free licensing model provides another key strength: unlike HEIC/HEIF which relies on patent-encumbered HEVC, AVIF's AV1 foundation is free for anyone to implement without licensing fees. Browser support has reached broad adoption, with Chrome, Firefox, Safari, and Edge all rendering AVIF natively. The format is rapidly gaining adoption for web images where quality-to-size ratio is paramount.
Initial release: February 8, 2019
ICO is the icon file format for Microsoft Windows), introduced with Windows 1.0 in 1985 and serving as the standard container for application icons, file type icons, and shortcut icons throughout the Windows ecosystem. An ICO file bundles multiple image variants within a single container — each at different sizes (16x16, 32x32, 48x48, 256x256, and others) and color depths (4-bit, 8-bit, 24-bit, 32-bit with alpha) — allowing Windows to select the most appropriate image for each display context, from tiny taskbar buttons to large desktop icons. The container structure consists of an ICONDIR header, an array of ICONDIRENTRY records describing each variant, and the image data itself. Since Windows Vista, ICO files support embedded PNG-compressed images for the larger sizes (typically 256x256), dramatically reducing file size while maintaining quality with full alpha transparency. One advantage is automatic size adaptation — Windows pulls the optimal resolution from the ICO container for each context (Explorer list view, desktop tile, Alt-Tab preview), ensuring crisp display without the application managing separate image files. The format's operating system-level integration is another core strength: ICO files serve as the identity mechanism for executables, file associations, and shortcuts across all Windows versions, and web browsers use favicon.ico for website identity in tabs and bookmarks. ICO creation and editing is supported by image editors like GIMP, Inkscape, and dedicated icon tools, and the format remains essential for Windows application development.
Developer: Microsoft
Initial release: 1985

Frequently Asked Questions

Why convert AVIF to ICO?

ICO lets you create Windows icons and website favicons from AVIF images — necessary when building application assets or branding elements for the web.

Which apps support ICO files?

Windows Explorer, IcoFX, Greenfish Icon Editor, GIMP. Most modern operating systems also have built-in support or free viewer options available.

Is the AVIF to ICO conversion free?

You can convert AVIF to ICO for free on convertio.co. Larger or more frequent conversions are available with a subscription plan.

Is batch AVIF to ICO conversion available?

Absolutely — upload multiple AVIF files simultaneously and convert them all to ICO at once. Batch mode saves considerable time on repetitive conversions.

What happens to my uploaded files?

Your AVIF files are automatically deleted right after conversion. The resulting ICO files remain available for download for 24 hours, then they are permanently removed.

How long does AVIF to ICO conversion take?

Most conversions complete within seconds. Processing time depends on file size and server load, but the entire workflow typically finishes in under a minute.

AVIF to ICO Quality Rating

4.8 (1,905 votes)
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