How do I convert ICO to AVIF?

Upload your ICO file above. It is converted to AVIF automatically (change the output format or quality in the Settings tab if you need to), then click Download. There is nothing to install.

Does converting ICO to AVIF lose quality?

AVIF is lossy by default, so some fine detail is discarded to make the file smaller. Raise the quality or switch on lossless in Settings for a closer copy.

Will the AVIF keep the transparent background?

Yes. AVIF supports smooth, partial transparency, so transparent areas stay transparent.

ICO or AVIF: which should I use?

Use ICO for website favicons and Windows app or shortcut icons. Use AVIF for the smallest high-quality images for websites and apps. Keep in mind the main drawback of AVIF: it is slow to create and many editing apps and older devices can’t open it.

An ICO file bundles one picture at several sizes, from 16 to 256 pixels, so browsers and Windows can pick the sharpest version for a tab, bookmark or desktop shortcut.

Is the ICO to AVIF converter free?

Yes. Convert, preview and download a single result without creating an account. Premium adds batch conversion (many files into one ZIP) and larger uploads.

Convert ICO to AVIF — Smallest High-Quality Images

Convert ICO to AVIF online for very small web images that keep transparency. No software to install. Preview one free or batch-convert with Premium.

Drop your ICO file or click to browse

Why convert ICO to AVIF?

Transparent areas stay transparent: AVIF supports smooth, partial transparency just like ICO.
AVIF is made for the smallest high-quality images for websites and apps.

What to expect when converting ICO to AVIF

AVIF uses lossy compression by default; raise the quality or switch on lossless in Settings for a closer copy.
Your original ICO file isn’t changed: you download a new AVIF copy.

ICO vs AVIF

功能	ICO	AVIF
全名	Windows Icon	AV1 Image File Format
Origin	Created by Microsoft for Windows icons	Released by the Alliance for Open Media in 2019
压缩	Lossless images at several sizes	Lossy or lossless
Transparency	Yes — smooth, partial transparency	Yes — smooth, partial transparency
动画	否	是
颜色	Full colour with transparency	8, 10 or 12 bits per channel, including HDR
Where it opens	Browsers (as favicon.ico), Windows and icon editors	Current Chrome, Edge, Firefox and Safari 16+; fewer editing apps
最适合	website favicons and Windows app or shortcut icons	the smallest high-quality images for websites and apps
Main drawback	icons are square and at most 256 × 256 pixels	it is slow to create and many editing apps and older devices can’t open it

In short: choose ICO for website favicons and Windows app or shortcut icons; choose AVIF for the smallest high-quality images for websites and apps.

Frequently asked questions

How do I convert ICO to AVIF?: Upload your ICO file above. It is converted to AVIF automatically (change the output format or quality in the Settings tab if you need to), then click Download. There is nothing to install.
Does converting ICO to AVIF lose quality?: AVIF is lossy by default, so some fine detail is discarded to make the file smaller. Raise the quality or switch on lossless in Settings for a closer copy.
Will the AVIF keep the transparent background?: Yes. AVIF supports smooth, partial transparency, so transparent areas stay transparent.
ICO or AVIF: which should I use?: Use ICO for website favicons and Windows app or shortcut icons. Use AVIF for the smallest high-quality images for websites and apps. Keep in mind the main drawback of AVIF: it is slow to create and many editing apps and older devices can’t open it.
What is a ICO file?: An ICO file bundles one picture at several sizes, from 16 to 256 pixels, so browsers and Windows can pick the sharpest version for a tab, bookmark or desktop shortcut.
Is the ICO to AVIF converter free?: Yes. Convert, preview and download a single result without creating an account. Premium adds batch conversion (many files into one ZIP) and larger uploads.

使用 ICO to AVIF 可以做什么

在开始之前查看主要功能。

Convert ICO files to AVIF online
Choose AVIF quality or switch to lossless
Switch to any other output format in Settings
Batch-convert many ICO files into one ZIP
Preview the result before you download

使用这个工具

设置参考

ICO to AVIF 的可用控件。

设置

输出格式下拉框: Chooses the file type you download. The page opens on its own output format; switch to any other format before converting.选项: JPGPNGWebPAVIFGIFTIFFBMPICOPDF
质量滑块范围: 20–100 · 默认: 90: For JPG, WebP, AVIF and image-to-PDF output: higher keeps more detail but makes a bigger file; 60–80 suits most photos. Documents (Publisher, XPS, EPS…) become PDFs with every page and sharp text, with no quality setting.
无损模式开／关: For WebP and AVIF output: keeps every pixel exactly (best for logos, graphics and transparency) at the cost of a larger file.
背景填充取色器: For JPG, BMP and image-to-PDF output, which can’t store transparency: the colour that fills transparent areas (white by default).