Does converting AVIF to ICO improve the image quality?

No. AVIF already threw detail away when it was saved, and that detail does not come back. Writing the lossless ICO preserves the picture you have now, but the file is usually several times larger.

What happens to transparency?

It survives. Both AVIF and ICO carry an alpha channel, so transparent areas stay transparent.

Is there a file size limit?

No limit that we impose. The only ceiling is your device's memory, so a very large photo or a long recording may take a few seconds.

Are my files uploaded anywhere?

No. The conversion runs inside this browser tab, so the file never leaves your device — go offline once the page has loaded and keep converting.

AVIF to ICO converter

Convert AVIF files to ICO right in your browser. Nothing is uploaded, there is no sign-up, and there is no file limit.

Runs on your device
No upload, no queue
Batch + ZIP download

Drop files here, or click to choose

Supports PNG, JPG, WEBP, AVIF, BMP, GIF, SVG, HEIC, TIFF and ICO — and writes GIF, TIFF and PDF too. Files stay on your device.

Convert to

Max width (px, optional)

Quality

How to convert AVIF to ICO

Drop your AVIF file onto the box above, or click it to browse.
Choose ICO as the output format.
Press convert, then download the result.

AVIF vs ICO

AVIF works well for modern sites squeezing every kilobyte. ICO works well for favicons and app icons. The table below compares the two on the things that usually decide the choice.

	AVIF	ICO
Compression	Lossy	Lossless
Transparency	Yes	Yes
Best for	modern sites squeezing every kilobyte	favicons and app icons

Questions about AVIF to ICO

Does converting AVIF to ICO improve the image quality?: No. AVIF already threw detail away when it was saved, and that detail does not come back. Writing the lossless ICO preserves the picture you have now, but the file is usually several times larger.
What happens to transparency?: It survives. Both AVIF and ICO carry an alpha channel, so transparent areas stay transparent.
Is there a file size limit?: No limit that we impose. The only ceiling is your device's memory, so a very large photo or a long recording may take a few seconds.
Are my files uploaded anywhere?: No. The conversion runs inside this browser tab, so the file never leaves your device — go offline once the page has loaded and keep converting.

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