I'm not aware of any way to do that. Even when you use Chrome's "pretty print" feature, you don't get back to the original un-minified version of the JS resource, since there are often white space differences, and comments that have been removed. So it'd be next to impossible to match things up with the original using any automated tool.

@@EWWWImageOptimizer in dev tools you actually can see the original files coverage

@@vladioffe I'm having a hard time visualizing what you're actually asking then, and either way, I don't have any answers for you, sorry!

If you're using a custom theme and those lines aren't used anywhere on the site, sure. Otherwise, theme updates will overwrite your changes, and you certainly have to be careful of removing too much. I mostly would use the coverage tab to find CSS files that are completely unused, and the theme CSS seems unlikely to be one of those.

I'm not aware of any functionality like that within Chrome, and I wouldn't use this tool as a 100% accurate way of detecting unused CSS. For example, if it says a stylesheet is only 43% used, that could be because some of the elements that it affects aren't displayed on the page you're looking at. Or it could be footer CSS that hasn't been "used" yet because you didn't scroll that far. So you can use the coverage tab as a guide, but know that it's not 100% perfect.

Not at the moment, but will probably be a feature in future.

@@jsskulio it's 2022 and we're still looking for them, i desperately need it for my work

@@nassimback me tooooo

There's a newer video where I show how to use our SWIS plugin to disable unused assets (red ones): kzfaq.info/get/bejne/Z9amnNOU0baoaKs.html

If your CSS is minified (as it should be), Google apparently broke the coverage functionality, and you'll only see a red or green for one or two lines near the top. I checked it just now, and the Coverage section no longer works the way it used to. If you know how to put your site into SCRIPT_DEBUG mode, you may be able to make your site load un-minified CSS files temporarily, but some plugins/themes won't support that.

Then you use the SWIS plugin to disable unused CSS (and JS) files: docs.ewww.io/article/97-disabling-unused-css-and-js

@@shanebishop959 thank you.

@@AhmadZaytoun Hi, I cannot see Shane's reply to your comment. Same question here, what to do now on the red CSS and JS? This is video is awesome but incomplete.

@@edgarlacson Sorry. I forgot what he had replied.

@@AhmadZaytoun hi, I found it from other videos. :) thanks for your reply anyway