Convert ICO to AVIF
Convert ICO files to AVIF locally, completely free and with maximum privacy.
Drag and drop your files here
or click to browse local files (large files supported, limited only by browser RAM)
Upload FilesPlatform Statistics
How to convert ICO to AVIF
- Drop your .ico files above, or click Upload Files. You can add many files at once.
- AVIF is already selected as the output. Open the settings (gear icon) to fine-tune the result.
- Click Convert All. ImageMagick runs inside your browser through WebAssembly; nothing is uploaded.
- Download your .avif files as soon as each one finishes.
What to know about ICO to AVIF conversion
- AVIF supports both lossy and lossless compression and typically produces smaller files than older formats at the same visual quality.
- Transparency is preserved: AVIF supports an alpha channel just like ICO.
- AVIF is best for high-quality web images with the smallest possible file size, and opens in Chrome, Firefox, Edge and Safari 16+.
ICO vs AVIF
| Feature | ICO (Windows Icon) | AVIF (AV1 Image File Format) |
|---|---|---|
| Compression | lossless | lossy or lossless |
| Transparency | Yes | Yes |
| Animation | No | Yes |
| Best for | website favicons and Windows icons | high-quality web images with the smallest possible file size |
| Opens in | browsers, Windows and icon editors | Chrome, Firefox, Edge and Safari 16+ |
ICO (Windows Icon): An image file format for computer icons, widely used as website favicons.
AVIF (AV1 Image File Format): A cutting-edge image format offering outstanding compression efficiency and image quality based on the AV1 video codec.
Conversion options
- Quality (1–100)
- Resize by width, height or both (aspect ratio is preserved)
- Filters: grayscale, sepia, blur and sharpen
- Custom output file name
Frequently asked questions
Is it safe to convert ICO to AVIF here?
Yes. Your files are processed entirely on your own device by WebAssembly code running in the browser. They are never uploaded, so nobody else can see them, and the converter keeps working even if your connection drops after the page loads.
Is there a file size limit?
There is no server-side limit. The only limit is the memory available to your browser, typically 1.5–4 GB on desktop computers.
Can I convert several ICO files at once?
Yes. Add as many files as you like; they are converted in parallel according to your device's CPU cores, and you can apply the same settings to all of them.
Related conversions
Need the opposite? Convert AVIF to ICO.
Convert ICO to other formats
- ICO to JPG
- ICO to PNG
- ICO to PDF
- ICO to WEBP
- ICO to GIF
- ICO to SVG
- ICO to TIFF
- ICO to BMP
- ICO to JXL
- ICO to PSD
- ICO to TGA
- ICO to DDS
Convert other formats to AVIF
- JPG to AVIF
- PNG to AVIF
- PDF to AVIF
- WEBP to AVIF
- HEIC to AVIF
- GIF to AVIF
- SVG to AVIF
- TIFF to AVIF
- BMP to AVIF
- JXL to AVIF
- PSD to AVIF
- CR2 to AVIF
See every ICO converter and AVIF converter, or browse the full converter directory.