Like Firefox, Netscape is built on the Mozilla platform. Although you cannot automatically import all of your Netscape 9 information into Firefox, you can import your bookmarks or you can manually transfer other important data, or all of your profile data, from Netscape into Firefox.
Note: The folders that contain your Netscape and Firefox bookmarks and other profile data are hidden by default. You must enable viewing of hidden files and folders. Read this article for more information.
Importing your Netscape bookmarks
You can import your Netscape bookmarks into Firefox by using the Import feature of the Bookmarks Manager.
At the top of the Firefox windowOn the menu bar, click Bookmarks, and select Organize Bookmarks.... The Library window will open.
In the Library window, click Import and Backup and select Import HTML.... The Import Wizard for bookmarks will open.
Select From an HTML File and click NextContinue.
In the file picker that opens, navigate to your Netscape Navigator 9 profile folder.