Do you want to backup your bookmarks.
Here is the tutorial how to do.
Backup ( Export)
1. Open Firefox
2. In the menu bar Go to Bookmarks > Organize Bookmarks .
3. A new Window will open. Which would look like picture below.
4. See that Import & Backup at top of the window.
5. Click it .
6. If you are thinking of switching to another browser click export HTML ( Almost all browsers support HTML Bookmarks).
7. If you want to use the same Click only 'Backup'.
8. Choose the location where you want to save the file.
9. You are done.
Importing
1. Importing is easier too.
2. Follow Expoting steps 1-5.
3. If you are importing from HTML file click Improt HTML.
4. Locate the file and ok.
5. If you are importing the firefox bookmarks select Restore > Choose File.
6. Locate and done.
Enjoy