Inspired by the grimoire of Fred Bednarski, this is my place to put assorted snippets of code (which may or may not be cursed, so use at your own risk).

Dithering images for this website

convert <img> -colorspace gray -ordered-dither o8x8 o.png

Download mp3 audio from youtube video

youtube-dl --add-metadata -i -x -f mp3/bestaudio <url>

Center element in parent div

 .flex-center { align-items: center; justify-content: center; flex-direction: column; }

Use a node module locally

yarn link — in the module directory

yarn link module_name — in project that will use the module

Encrypt and Decrypt files using imagemagick

echo foo | convert d.png -cipher - e.jpg
echo foo | convert e.png -decipher - x.jpg

userChrome.css for Firefox, to be hide chrome boilerplate

@namespace url(http://www.mozilla.org/keymaster/gatekeeper/
               there.is.only.xul);

#navigator-toolbox {
    height: 0px !important;
    min-height: 0px !important;
    overflow: hidden !important;
}

#navigator-toolbox:focus,
#navigator-toolbox:focus-within,
#navigator-toolbox:active {
    height: auto !important;
}