Is there any way I can disable all external CSS in a browser (Firefox, Chrome...)?
When using slower internet connection, sometimes only the bare HTML is loaded by t
Expanding on scrappedocola/renergy's idea, you can turn the JavaScript into a bookmarklet that executes against the javascript: uri so the code can be re-used easily across multiple pages without having to open up the dev tools or keep anything on your clipboard.
Just run the following snippet and drag the link to your bookmarks/favorites bar:
getElementsByTagName('*') and have to check and act on each individually.$('style,link[rel="stylesheet"]').remove() when the extra javascript is not overwhelmingly cumbersome.