Exporting from Chrome
Click the customize button (three vertical dots).
Click Bookmarks.
Click Bookmark manager.
...
In the bookmark manager, click the customize button (three vertical dots).
Click Export bookmarks.
...
Save the bookmark file to your Documents folder. This file can be used to recover your bookmarks if they’re ever lost or if you transfer to a new computer.
...
Exporting from Microsoft Edge
Click the favorites button.
Click the more options button.
Click Export favorites and save the favorites file to your Documents folder.
...
Exporting from Firefox
For Firefox, it’s easiest to use the keyboard shortcut to export favorites.
Click Ctrl+Shift+O.
...
Click Import and Backup.
Click Export Bookmarks to HTML…
Save the file to your Documents folder.
...