If you need to copy all web addresses (URLs) from your open tabs to the clipboard, there is a solution. It does not seem easy to do this automatically, as Firefox offers no such option. However, it can be done quickly and easily. You do not even have to install extensions.
Let's see how it's done in one σελίδα of Firefox that has a few tabs open:
From tools of the menu open Preferences.
In the Preferences window, you will find in the first tab the setting for your Home Page. In the case of below pictures, the home page frame is empty, so we will lose nothing. If you've saved a home page, when you're done you'll need to go through it again.
Now, click on "Use current pages." All tabs URLs that are open in your browser will be copied to the "Home Page" box.
You can copy them from there by selecting them all with Ctrl + A and then Ctrl + C.
When copying the URLs from the "Home Page" you will notice that they are separated by the character "|."
If the addresses you copied are many and the character removal process it seems tiring, we can automatically remove it.
open her (our beloved) free application Notepad ++ and paste the URLs you want to edit.
Follow the path Search - Replace or in Greek Search - Replace
In the first frame you will see enter the character you want to replace (|)
and in the replacement box type 
as shown in the figure below
Immediately then click Replace All or Replace All and you will see the result shown in the above image.
