`cavif` — PNG/JPEG to AVIF converter

Encoder/converter for AVIF images. Based on rav1e and avif-serialize, which makes it pure Rust, with no C code!

Installation

Alternatively, build it from source. It requires:

Then run in a terminal:

bash cargo install cavif

Run in a terminal (hint: you don't need to type the path, terminals accept file drag'n'drop)

bash cavif image.png

It makes image.avif. You can adjust quality (it's in 1-100 scale):

bash cavif --quality 60 image.png

You can also specify multiple images (encoding is multi-threaded, so the more, the better!).

text cavif [OPTIONS] IMAGES...

--quality=n — Quality from 1 (worst) to 100 (best). The numbers have different meaning than JPEG's quality scale. Beware when comparing codecs.
--speed=n — Encoding speed between 1 (best, but slowest) and 10 (fastest, but a blurry mess). Encoding of AVIF is pretty slow, so you need either a) beefy multicore machine b) avoid large images c) patience.
--overwrite — Replace files if there's .avif already. By default existing files are left untouched.
-o path — Write output to this path instead of samefile.avif. If multiple input files are specified, it's interpreted as a directory.
--quiet — Don't print anything during conversion.
--premultiplied-alpha — Warning: currently incompatible with libavif. Improves compression of transparent images by clearing RGB of fully transparent pixels and lowering quality of semi-transparent colors.
--dirty-alpha — Don't change RGB values of transparent pixels. By default irrelevant color of transparent pixels is cleared to avoid wasting space.