To convert ICO to AVIF, choose your ICO icons above, adjust the options if needed and press "Convert to AVIF". The AVIF downloads instantly: free, with no sign-up, and the file never leaves your device.
About the ICO to AVIF Converter
Convert ICO to AVIF online for free, with no account and no watermark. ICO files only open in a handful of programs, so switching to AVIF is the quickest way to get the smallest next-generation web images for the smallest possible website images and Core Web Vitals optimisation.
The converter decodes your ICO with your browser's own image engine and writes the AVIF with a small open-source AVIF encoder, so quality settings are applied precisely. Because everything happens on your own device, your icons are never uploaded, stored or seen by anyone else, which makes it safe for ID photos, Aadhaar or PAN scans and personal pictures.
What to expect: transparency is preserved because both ICO and AVIF support an alpha channel; AVIF is compressed, and the quality slider lets you trade file size against detail; camera metadata such as GPS location is removed because the image is re-encoded.
How to use the ICO to AVIF Converter
- Click "Choose files" or drag your ICO icons onto the box. You can add several at once.
- Adjust the AVIF quality slider (85 is a good default) and, if you like, set a maximum width to resize.
- Press "Convert to AVIF". The conversion runs on your device and shows its progress.
- Download each AVIF file, or use "Download all (ZIP)" when you converted several.
- Open the result in Chrome or Edge to check it; your original ICO is never changed.
Tips & benchmarks
- AVIF encoding is slower than JPG; a quality of 50–65 already looks excellent and gives tiny files.
- ICO is lossless and AVIF is not, so keep your original ICO as the master copy and use the AVIF for sharing.
- Password-protected (encrypted) archives cannot be converted; extract them with the password first.
- Keep the file name simple (letters, numbers and hyphens) if you plan to upload the AVIF to a website or government portal.
Frequently asked questions
How do I convert ICO to AVIF?
Click "Choose files", select your ICO icons, adjust the options if you want, and press "Convert to AVIF". The AVIF downloads immediately; with several files you can download everything as one ZIP.
Is this ICO to AVIF converter free and safe?
Yes. It is completely free, with no sign-up, no daily limit and no watermark. The conversion runs inside your browser, so your icons never leave your phone or computer and nothing is stored on News Appite's servers.
Will converting ICO to AVIF reduce the quality?
AVIF is a compressed format, so a little detail is discarded. At the default quality of 85 the difference is invisible for normal viewing; raise the slider to 95 if you need maximum detail.
Can I convert several ICO files at once?
Yes. Add as many ICO files as you like; they are converted one after another and you can download them individually or together as a ZIP.
Does it work on iPhone, Android and Mac?
Yes. The converter works in any modern browser, including Chrome, Safari, Edge and Firefox, on Android, iPhone, iPad, Windows, macOS and Linux. No app is needed.
What is the difference between ICO and AVIF?
ICO (Windows Icon) is a multi-size icon file best suited to website favicons, Windows shortcuts, desktop apps and folder icons. AVIF (AV1 Image File Format) is a next-generation web image best suited to the smallest possible website images and Core Web Vitals optimisation.
Is there a file size limit?
There is no upload limit, because nothing is uploaded. The practical limit is your device's memory: files of a few hundred megabytes work on most computers, and phones handle smaller files comfortably.
Can I convert ICO to AVIF under a size limit such as 50 KB?
Yes. Lower the quality slider and set a maximum width (for example 800 px) to shrink the file. For an exact limit, run the result through our Compress Image to 20 KB, 50 KB or 100 KB tools, which find the best quality that fits automatically.
ICO ko AVIF kaise kare?
Is page par "Choose files" dabaiye, apni ICO file chuniye aur "Convert to AVIF" par click kijiye. AVIF file turant download ho jaati hai. Ye bilkul free hai, sign-up nahi chahiye, aur aapki file kisi server par upload nahi hoti.
ICO vs AVIF: format comparison
| ICO | AVIF | |
|---|---|---|
| Full name | Windows Icon | AV1 Image File Format |
| Type | Multi-size icon file | Next-generation web image |
| Created by | Microsoft, 1985 | Alliance for Open Media, 2019 |
| Compression | PNG or bitmap images inside one file | Lossy or lossless (AV1) |
| Transparency | Yes | Yes |
| File extension | .ico | .avif |
| MIME type | image/x-icon | image/avif |
| Best for | Website favicons, Windows shortcuts, desktop apps and folder icons | The smallest possible website images and Core Web Vitals optimisation |
| Opens in | Windows Explorer, every browser (as a favicon), Visual Studio and icon editors | Chrome, Edge, Firefox, Safari 16+, Android 12+ and recent versions of GIMP |
What is a ICO file?
ICO is the Windows icon format, and it is still the standard favicon.ico that browsers request for every website. One ICO file can hold several sizes, such as 16, 32 and 48 pixels, so the icon looks crisp everywhere.
What is a AVIF file?
AVIF is a royalty-free image format built on the AV1 video codec and released in 2019. It is often 30–50% smaller than JPG at the same visual quality and supports transparency and HDR, making it the most efficient image format browsers support today.
Need it the other way round? Use the AVIF to ICO Converter.
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