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AVIF to ICO converter
Free AVIF to ICO converter in your browser. Files stay on this device. Nothing is uploaded.
Drop images here
or click to choose. Paste works too.
Files never leave this device. Conversion runs in your browser.
Why convert AVIF to ICO?
AVIF is lossy (cutting-edge web images when browser support is acceptable). ICO is lossless (icons and favicons that need the ICO container). Converting AVIF to ICO remaps pixels into the target container in your browser.
What changes in the file
- Output is lossless ICO; existing AVIF artifacts are preserved, not repaired
- Transparency is supported in the ICO output
- You can resize, adjust quality where relevant, and strip EXIF on export
- Conversion runs on this device — the file is not uploaded
How to convert AVIF to ICO
- Drop one or more AVIF files onto the converter (or pick them from disk).
- Confirm the output is set to ICO, then adjust quality, size, or metadata if needed.
- Download the converted ICO file — processing never left your browser.
About AVIF
AVIF is a next-generation image format based on the AV1 video codec. It typically yields smaller files than WebP or JPG at similar quality and supports transparency and high bit depth.
About ICO
ICO is the Windows icon container format. It can hold one or more raster images at different sizes and is still used for favicons and desktop shortcuts.
Common questions
Is this AVIF to ICO converter free?
Yes. Formatly converts AVIF to ICO in the browser at no charge and without an account.
Do you upload my AVIF files?
No. Decoding and encoding run locally with browser APIs and WebAssembly codecs when needed. Files stay on this device.
Will converting AVIF to ICO reduce quality?
ICO is lossless, so the export keeps the decoded pixels. If the source was already lossy (AVIF), prior compression artifacts remain.