Can I force a re-parse of a page so that visited links are treated as unvisited?
I'm looking for a way of viewing a used page as if for the first time - i.e. of re-parsing it so that the visited links revert to the colour etc that css defines for unvisited links.
Alle svar (1)
You can clear the visited history of that page.
Another way is to disable the visited link colors. You can do that by (temporarily) setting the pref layout.css.visited_links_enabled to false on the about:config page.
To open the about:config page, type about:config in the location (address) bar and press the "Enter" key, just like you type the url of a website to open a website.
If you see a warning then you can confirm that you want to access that page.