Command line utility to convert images to AVIF, requires Node.js 14.15.0+
$ npx avifBy default, will search current directory for image files and create AVIF variants.
Exit code is non-zero if one or more errors occured.
Options:
--input Input file name(s), supports globs/wildcards
[string] [default: "*.{jpg,jpeg,tif,tiff,webp,png,gif,svg}"]
--output Output directory, default is same directory as input
[string] [default: ""]
--quality Quality vs file size, 1 (lowest/smallest) to 100
(highest/largest) [number] [default: 50]
--effort CPU effort vs file size, 0 (fastest/largest) to 9
(slowest/smallest) [number] [default: 4]
--lossless Use lossless compression [boolean] [default: false]
--chroma-subsampling Set to '4:2:0' to use chroma subsampling
[string] [choices: "4:2:0", "4:4:4"] [default: "4:4:4"]
--overwrite Allow existing output files to be overwritten
[boolean] [default: false]
--append-ext Append .avif to the file name instead of replacing
the current extension (foo.jpg => foo.jpg.avif)
[boolean] [default: false]
--verbose Write progress to stdout [boolean] [default: false]
-h, --help Show help [boolean]
--version Show version number [boolean]
npx avif --verbosenpx avif --input="**/*.{jpg,jpeg}" --output="/another/path" --overwritenpx avif --input="images/*.*" --effort=0 --quality=30
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