Editing Batch Converting Image Files

== `ffmpeg` ==

Use `ffmpeg`. 

If `ffmpeg` is not available on the command line, install with `brew install ffmpeg`.

== Batch convert `webp` to `jpg` ==

<syntaxhighlight lang=bash>
$ for i in *.webp; do ffmpeg -i "$i" "{i%.webp}.jpg"; done
</syntaxhighlight>

== Batch convert `png` to `jpg` and scaling images proportionally ==

The `scale=1024:-1` tells ffmpeg to scale the images to 1024 pixels wide. The height will be scaled proportionally. To scale to a consistent height of 800 pixels, `scale=-1:800`.

<syntaxhighlight lang=bash>
$ for i in *.png; do ffmpeg -i "$i" -vf scale=1024:-1 "converted/${i%.*}.jpg"; done
</syntaxhighlight>