Click the "Opera" button in the upper-left corner of the Opera browser window.
Click "Bookmarks," then click "Manage Bookmarks."
Click the "File" button at the top of the window, and then click "Export Opera Bookmarks" if you want to continue using your bookmarks with Opera. If you want to use your bookmarks with another browser such as Firefox, click "Export as HTML" instead.
Navigate in the file browser window to the location on your computer where you want to save your bookmarks.
Type a name in the "File Name" field that will help you identify the bookmark file in the future, and then click the "Save" button to save the bookmark file.