Transform your HEIC files into AVIF format instantly within your browser.
HEIC is Apple's file extension for images encoded under the High Efficiency Image File Format (HEIF) standard, using HEVC (H.265) compression. Apple made it the default photo format on iPhones starting with iOS 11, since it stores images at roughly half the file size of an equivalent-quality JPEG. As a container format, a single HEIC file can also bundle image bursts, depth data, or Live Photo sequences together. The main friction point is compatibility: older software, most Windows PCs, and many web platforms still can't open HEIC natively, which is the main reason people convert it to JPG.
AVIF (AV1 Image File Format) is a royalty-free image format based on the AV1 video codec, with its first specification published in 2019 by the Alliance for Open Media. It currently offers some of the best compression efficiency of any mainstream image format, often producing noticeably smaller files than WebP at the same visual quality, while also supporting HDR color and transparency. Browser support has grown quickly since 2020, and AVIF is increasingly used on high-traffic websites to cut bandwidth and improve load times, though encoding and decoding remain more computationally demanding than older formats.
Our client-side processing architecture delivers lightning-fast file transformations while maintaining strict privacy standards.
Yes, all conversion tools on ImgDomino are completely free with no registration required.
Yes, this tool is completely free with no registration, no watermark, and no conversion limit.
No, the conversion happens locally in your browser using JavaScript. Your files are never uploaded to any external server.
There's no fixed limit enforced by the tool since everything runs in your browser rather than on a server.
For most everyday uses, the visual difference is negligible.