As you may know, web browsers allow you to open multiple tabs and it's very convenient to not have to remember what you have already visited. However, sometimes you find yourself trying to find what you've already read so you can get back to the page.

This is not necessary, you don't have to remember every link you have already seen, there is another way. Install Unread Tab and add it to the tabs you open in the browser. The extension will keep track of your unread tabs and will show you the background and current status of the tab.