Conversion of user CSS to user JS

Greasy Fork can convert user CSS to user JS format. @-moz-document rules are converted into JavaScript if statements, building the CSS to apply. This CSS is appended to <head> in a <style> element.

The presence of some user CSS features precludes conversion to user JS format. When these features are detected, user JS conversion will not be done.

Greasy Fork's user JS may load the CSS somewhat differently than user CSS does.

If you find the user JS conversion doesn't work, you should choose the option to make it unavailable when you update your user CSS.