cavif

Convert an image to AVIF format

$ cavif [path/to/image.png]

$ cavif --quality [80] [path/to/image.jpg]

$ cavif --speed [6] [path/to/image.png]

$ cavif -o [path/to/output.avif] [path/to/image.png]

$ cavif -o [path/to/output_dir/] [image1.png] [image2.jpg]

$ cavif --overwrite [path/to/image.png]

cavif [--quality 1-100] [--speed 1-10] [-o path] [--overwrite] [--quiet] file...

cavif is a command-line tool written in Rust for converting PNG and JPEG images to AVIF (AV1 Image File Format). AVIF uses AV1 video codec compression, offering superior compression ratios compared to JPEG while maintaining image quality.
By default, output files are saved with the same name but with an .avif extension. Existing files are not overwritten unless --overwrite is specified.

--quality 1-100

Output quality level. Higher values mean better quality and larger files. Default varies by input

Encoding speed. 1 is slowest with best compression, 10 is fastest but lower quality. Default: 4

Output path. For multiple inputs, treated as a directory

Replace existing .avif files instead of skipping them

Suppress output during conversion

Speeds 1-2 are extremely slow but produce ~3-5% smaller files. Speeds 7+ significantly degrade compression and are not recommended.
There is no lossless compression mode; quality 100 produces unreasonably large files without being truly lossless.
Requires Rust 1.67 or later if building from source.

cavif was created by Kornel Lesinski as a pure Rust implementation of an AVIF encoder. AVIF itself was standardized in 2019 by the Alliance for Open Media, leveraging the AV1 video codec for still image compression.

cwebp(1), convert(1)