How to find unused classes in my HTML?

Issue

There are lots of tools for finding unused CSS rules in stylesheets, such as Chrome Audits and the Dust-Me Selectors add-on for Firefox (unfortunately not compatible with Firefox Quantum).

But what about the other way around?

How do I find classes that are in my HTML, that do not exist in my stylesheets?

Solution

This may be helpful: https://code.google.com/p/find-unused-classes/ . According to the description:

It shows classes that exist in css selectors and do not exist on html page and like-verse.

As Jim said, be warned that some classes may be unused by your stylesheets but still used in JavaScript.

Answered By - BadgerPriest