Why convert HEIC to AVIF?
HEIC is Apple's High Efficiency format and the iPhone default, storing photos at roughly half the size of JPEG. AVIF is a next-generation format built on the AV1 codec, producing the smallest files of any mainstream format at a given quality.
AVIF supports an alpha channel, so you get a transparency-capable file to layer or edit — though the conversion cannot invent transparency the HEIC never had. AVIF is supported across all modern browsers and is one of the best choices for website performance and Core Web Vitals.
Pixohub converts HEIC to AVIF entirely inside your browser using the HTML canvas API and an in-browser HEIC decoder, so your images are never uploaded to a server. That makes conversion instant, completely private, and free — turn as many HEIC files into AVIF as you like. Reach for AVIF whenever you need cutting-edge web delivery where the very smallest file size wins.
HEIC vs AVIF: what to expect
HEIC is best for space-efficient iPhone and iPad photos, while AVIF shines for cutting-edge web delivery where the very smallest file size wins. Keep your original HEIC if you may later need the source file, and export a AVIF copy for sharing and the web.
Optimizing for the web? After converting, shrink the result further with our image compressor, resize it to exact dimensions with the image resizer, or convert an entire folder in one go using bulk format convert.