Convert HEIC to AVIF Online Free
HEIC is Apple's default photo format, storing high-quality images at roughly half the size of JPG. AVIF is a cutting-edge image format based on the AV1 video codec with excellent compression. FileConverter turns your HEIC into AVIF online in seconds - free, privacy-first, and with no software to install or account to create.
HEIC and AVIF are sibling formats — both spun out of video codecs (HEVC and AV1 respectively). Converting moves your photo from Apple's ecosystem-bound container to the open, royalty-free one the web is standardising on, at a similar or smaller size.
What changes when you convert HEIC to AVIF
Both HEIC and AVIF are compressed image formats, so expect a small quality shift rather than a perfect copy. Start from the largest, highest-quality HEIC available to get the cleanest AVIF result.
About the HEIC format
HEIC (based on HEIF) is the format iPhones and iPads use by default. It keeps excellent quality in a compact file, but many Windows apps, websites, and email clients still cannot open it, which is why converting to JPG is so common. In everyday use, HEIC is chosen for iPhone and iPad photo storage and saving space while keeping photo quality. It opens in Apple devices natively; needs conversion for many Windows and web tools.
About the AVIF format
AVIF often beats WebP and JPG on file size at the same visual quality, and it supports HDR, wide colour, and transparency. Browser support is now broad, though some older desktop apps still cannot open it. In everyday use, AVIF is chosen for high-efficiency web images, HDR and wide-gamut photography online and replacing large JPGs to cut bandwidth. It opens in modern browsers and recent operating systems.
HEIC vs AVIF
HEIC is best known for about half the size of JPG at similar quality, while AVIF stands out for best-in-class compression efficiency. Choosing between them comes down to where the file needs to go next.
Common use cases
People convert HEIC to AVIF for jobs such as high-efficiency web images, HDR and wide-gamut photography online and replacing large JPGs to cut bandwidth. It is especially common when a HEIC file arrives from one system but needs to work in another that standardises on AVIF.
When to convert HEIC to AVIF
Reach for HEIC to AVIF when your destination expects AVIF — for example high-efficiency web images, HDR and wide-gamut photography online and replacing large JPGs to cut bandwidth. It is the right move when you receive a HEIC file but the app, website, or person you are working with cannot use it. Bear in mind that limited support in older software and print tools, so keep your original HEIC if you might need it again.
How to convert HEIC to AVIF
- Open the converter with HEIC to AVIF pre-selected using the button below.
- Upload your HEIC file (drag and drop or browse) within the size limit shown on this page.
- Confirm AVIF is selected as the target format.
- Start the conversion and download your AVIF file the moment it is ready.
Quality tips
Always start from the largest, highest-quality HEIC you have. If AVIF still needs to fit a size or pixel budget, run the result through our Compress or Resize tools rather than re-saving repeatedly, which degrades quality.
Platform compatibility
The HEIC to AVIF converter works on Windows, macOS, Linux, Android, and iOS - anywhere with a modern browser. No plugins or permissions are required to export AVIF.
File size limits
Images up to 200MB
Troubleshooting
- If the file exceeds the limit shown below, compress images, trim video, or split archives before retrying.
- If conversion fails, confirm the extension matches the real format — renaming a file alone does not change its contents.
- SVG and HEIC inputs sometimes need a moment longer on the first conversion.
- Transparency does not survive every target format — use PNG or WebP if an alpha channel matters.
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