Visited is a free add-on for the Firefox web browser that enables you to override custom visited link colors on websites that use these modifications.
Visited links by default display in a different color than links that have not been visited. These different link colors act as visual indicators on websites, that make it clear on first sight whether you have opened a link on a page or not. This is especially useful on sites with dynamic listings, like Hacker News for instance or Reddit where contents change often throughout the day, but also for research to distinguish visited resources from unvisited.
One of the issues that you may experience on today's Internet are sites which change the visited link color via CSS so that it looks like to the normal link color on the site. This means that you cannot longer distinguish between links that you have visited already, and links that you have not visited.
Update: Firefox ships with an option to enforce the default link colors of the web browser. You need to load about:preferences#content in the browser's address bar and click on the Colors button there.
There you find options to "override the colors specified by the page with your selections above". If you set that value to always, Firefox attempts to override whichever custom styling the page in questions use.
Visited is a Firefox add-on that paints all visited links in a color of your choosing. It overrides the defined link colors on all websites, so that visited links can be distinguished from unvisited ones.
The default link color has been set to gold, which should highlight visited links clearly on most pages, but not all. It is possible to change the color in the advanced Firefox preferences (and unfortunately not in an options menu via the about:addons page).
To change the link color, you need to enter about:config in the Firefox address bar to open the advanced configuration of the browser. Filter for the parameter extensions.visited.color.visited and change the value with a double-click. You can enter a color name or color code beginning with # in the value field. You can for instance change it to #800080 to turn the visited link color to purple.
The feature can be activated or deactivated with the shortcut code Alt-v for text links, or Alt-Shift-v for image links. It is unfortunately not possible to disable the painting of links on selected sites (it is for instance irritating in admin consoles and interfaces).
Firefox users can download and install the add-on at the official Mozilla Add-ons repository.
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Ghacks is a technology news blog that was founded in 2005 by Martin Brinkmann. It has since then become one of the most popular tech news sites on the Internet with five authors and regular contributions from freelance writers.