• First, open Firefox and visit the sites whose addresses you want to copy in multiple tabs. If you’ve already been browsing with a bunch of tabs open, you’re already set.
• At the top of the Firefox window, right-click any tab and choose “Select All Tabs” from the menu that appears.
• Once all the tabs are selected, right-click a tab again and select “Bookmark Tabs.”
• In the “New Bookmarks” window that opens, click the “Name” field and type any name that you’d like. Click the “Folder” drop-down menu and choose “Bookmarks Toolbar.” Then click “Add Bookmarks” at the bottom.

Open the bookmarks list in Firefox by pressing Ctrl+B on Windows or Command+B on Mac. In the Bookmarks list on the left of the Firefox window, find “Bookmarks Toolbar” and click the arrow beside it.

In the expanded Bookmarks Toolbar folder, right-click the folder that you created earlier and select “Copy.”

Open a text editor (such as Notepad on Windows or TextEdit on Mac), right-click anywhere in a blank text document, and select “Paste.” Alternatively, press Ctrl+V on Windows or Command+V on Mac.

The addresses of all your open tabs are now available in your text document. When you’re done, return to Firefox, right-click the temporary bookmarks folder that you just created, and select “Delete.”