Convert HEIC to AVIF online for free
1: Choose multiple local HEIC files or enter the URL of an online HEIC file. 2: Choose "AVIF" as target format and set options. 3: Click the "START CONVERSION" button to convert HEIC files to AVIF online.
Choose filesChoose files or enter remote file URLenter remote file URL
Set conversion options (optional)
High Efficiency Image File Format
File extension: .heif, .heifs, .heic, .heics
As HEIC is a container format, it can contain still images and image sequences (where a file contains more than one single image) that are coded in different formats. Currently, these include HEVC and H.264/MPEG-4 AVC (and JPEG for thumbnail/secondary images), though other coding formats may be added in the future. The main filename extension is .heic (for HEVC codec).
AV1 Image File Format
File extension: .avif
AV1 Image File Format (AVIF) is an image file format specification for storing images or image sequences compressed with AV1 in the HEIF file format. It competes with HEIC which uses the same container format, built upon ISOBMFF, but HEVC for compression. Version 1.0.0 of the AVIF specification was finalized in February 2019.