Convert HEIC to AVIF Online
HEIC is the default photo format on iPhone since iOS 11 — great for storage, poorly supported outside Apple devices. Converting to AVIF happens instantly, right in your browser. AVIF gives the smallest file sizes of any format here, but support in older browsers and some software is still limited.
Why Convert HEIC to AVIF
iPhones save photos as HEIC by default, so moving them to a Windows PC, an older app, or a web upload form often hits a compatibility wall without any clear explanation why. Converting to AVIF gets you the smallest possible file size, where the audience’s software supports it — done instantly, for free, without installing anything or creating an account.
HEIC vs AVIF: Technical Specs
Quick verdict: Pick HEIC for iPhone photos, Apple ecosystem, AVIF for next-gen web images, smallest file sizes.
.heic, .heif.avifimage/heicimage/avifHow It Works & Privacy Guarantee
Converting your HEIC file to AVIF happens in three steps, entirely on your device: your browser reads the HEIC file into memory, decodes and re-encodes it as AVIF using built-in browser technology (Canvas and WebAssembly), and hands you the finished file as a direct download.
At no point does the file get sent to a server. There’s no upload step to intercept, no account that could be breached, and nothing stored after you close the tab — the conversion simply couldn’t leak your file even if something went wrong, because it never left your browser in the first place.
HEIC to AVIF FAQ
What should I know about converting to AVIF?
AVIF gives the smallest file sizes of any format here, but support in older browsers and some software is still limited.
What is HEIC, and why would I need to convert it?
HEIC is the default photo format on iPhone since iOS 11 — great for storage, poorly supported outside Apple devices.
Will converting HEIC to AVIF reduce quality?
We decode the original HEIC data and re-encode it at high quality, so any difference is minimal to the eye for normal use.
How do I convert HEIC to AVIF for free?
Drop your HEIC file into the box above and press Convert — the AVIF download is ready in seconds, with no account, no watermark, and no limit on how many files you convert.
Can I convert multiple HEIC files to AVIF at once?
Yes — drop in as many files as you need, convert them all in one go, and download everything together as a single ZIP instead of clicking download on each file individually.