AVIF to ICO converter: free, fast and secure
Convert AVIF to ICO online for free with ConvertKaro. It is fast, private and works on any phone or computer. AVIF is new, so desktop apps, older phones and many upload forms cannot open it yet. ICO is far more compatible. ICO is the format browsers use for favicons and Windows uses for app and folder icons.
Unlike most converters, ConvertKaro never uploads your images. The conversion happens on your own device, so it is quicker, there are no file limits, and your photos stay private.
How to convert AVIF to ICO in 3 steps
- Add your AVIF files. Tap “Select files” or drag and drop one or more .avif images into the box above. You can also paste a screenshot with Ctrl+V.
- Adjust the options. Nothing to set: every common icon size is included automatically.
- Download your ICO. Conversion starts instantly. Download each ICO file, or all of them at once as a ZIP.
Why use ConvertKaro AVIF to ICO? Free, fast and secure
Here is what makes this AVIF to ICO tool different from most websites.
100% Free
Every feature of this tool is free for everyone. We do not lock better quality or bigger files behind a paid plan.
Fast results
Your file is processed right inside your browser, so there is no upload or download queue. Most jobs finish in a second or two, even on a slow mobile connection.
Secure and private
Privacy is built in: the conversion runs locally with JavaScript, so your data is never sent to us or anyone else. Close the tab and everything is gone.
No signup, no watermark
No registration and no watermark, ever. What you download is exactly your file.
Works on every device
Works in Chrome, Safari, Edge and Firefox on Android, iPhone, Windows, Mac and Linux. No app to install.
Quality you control
The ICO output keeps the full resolution of your AVIF, with high-quality resizing and correct colours.
ConvertKaro vs other online converters
| ConvertKaro | Typical online tool | |
|---|---|---|
| Price | Free forever, every feature | Free trial, then paid plans |
| Your files | Stay on your device | Uploaded to a server |
| Signup | Not needed | Often required |
| Watermark or ads on result | Never | Common on free plans |
| Speed | Instant, no upload wait | Depends on upload speed |
| Daily limits | None | Usually limited |
AVIF vs ICO: what is the difference?
This table shows the main differences between AVIF and ICO.
| AVIF | ICO | |
|---|---|---|
| Full name | AV1 Image File Format | Windows Icon |
| Type | Raster, lossy or lossless | Raster container |
| Compression | Lossy and lossless (AV1) | PNG inside |
| Transparency | Yes | Yes |
| Animation | Yes | No |
| File size | Smallest | Small |
| Support | Chrome, Edge, Firefox, Safari 16+; few desktop apps | Browsers (favicons), Windows |
| Best for | High-performance websites, modern apps | Website favicons, Windows app and folder icons |
What is AVIF?
AVIF is the newest mainstream image format, based on the AV1 video codec. It often makes files 30–50% smaller than JPG and noticeably smaller than WEBP at the same visual quality, with support for transparency, HDR and wide colour. Modern browsers display AVIF, but many desktop apps, older phones and upload forms still cannot open it.
What is ICO?
ICO is the icon format used for website favicons and Windows icons. One .ico file can contain several sizes of the same picture (16, 32, 48 up to 256 pixels) so the system can pick the right one for tabs, bookmarks, the taskbar or the desktop.
When should you convert AVIF to ICO?
- Website favicons for the browser tab
- Windows app and shortcut icons
- Folder icons
- Bookmarks and pinned sites
Tips for the best ICO results
- Use a square logo of at least 256×256 pixels with a transparent background. For a full favicon package with Apple and Android icons, use the Favicon Generator.
- You can convert many AVIF files at once. They are processed one after another and can be downloaded together as a ZIP.
- Keep your original AVIF files until you have checked the converted ICO images.
How AVIF to ICO keeps your photos and images private
Most online converters upload your file to their server, process it there and send it back. That costs time, uses your data pack and means a copy of your file sits on someone else’s computer. AVIF to ICO works differently: the page loads the tool into your browser, and your photos and images are processed by your own phone or computer. The file never travels over the internet, so it cannot be leaked, stored or misused.
Using AVIF to ICO on your phone
AVIF to ICO is designed for small screens. Buttons are large, options are simple, and downloads save directly to your phone storage. On iPhone, downloaded files appear in the Files app under Downloads; on Android they go to the Downloads folder.
Who uses AVIF to ICO?
AVIF to ICO is used every day by people from many backgrounds, for example:
- Students uploading photos and signatures to exam and admission forms
- Online sellers preparing product photos for Instagram, Meesho, Amazon and Shopify
- Office staff handling ID cards, scans and screenshots
- Bloggers and web designers who need fast-loading images
- Anyone sharing pictures on WhatsApp, email or social media
Supported input: JPG, JPEG, PNG, WEBP, HEIC/HEIF (iPhone), AVIF, GIF, BMP, TIFF and SVG.
Frequently asked questions
Will converting AVIF to ICO reduce quality?
Each icon size is resized with high-quality smoothing. Start from a large, square image for the sharpest favicon.
Does ICO keep transparency from AVIF?
Yes. ICO supports transparency, so transparent areas in your AVIF stay transparent.
Can I convert multiple AVIF files to ICO at once?
Yes. Select or drop as many AVIF images as you like. Each one is converted separately, and you can download them all together as a ZIP file.
Which sizes are inside the ICO file?
The icon contains 16, 32, 48, 64, 128 and 256 pixel versions, which covers browser tabs, bookmarks, the Windows taskbar and desktop shortcuts.
Is AVIF to ICO really free?
Yes. AVIF to ICO on ConvertKaro is 100% free with no limits, no signup and no watermark. There is no paid version.
Is it safe to use AVIF to ICO online?
It is one of the safest ways to do it, because nothing is uploaded. All processing happens locally on your device, and the files disappear when you close the page.
Does AVIF to ICO work on mobile?
Yes. It works in Chrome and Safari on Android phones and iPhones, as well as on tablets and computers. No app is needed.
Is there a file size limit in AVIF to ICO?
No upload means no server limit. The only limit is your device’s memory, which comfortably handles everyday files and even large batches.
Will ConvertKaro add a watermark or ask me to sign up?
No. There is no watermark, no login and no email required. Your downloaded file is exactly your result.
Does AVIF to ICO work offline?
Once this page has finished loading, the tool keeps working even if your internet connection drops, because all processing happens on your device.