Click the Chrome menu icon at the top-right corner of your browser window, point to Bookmarks, and select Bookmark manager. (You can also quickly open the Bookmark manager by pressing Ctrl+Shift+O.)
Click the Organize menu and select Export bookmarks to HTML file. (To import your bookmarks later, select the Import bookmarks from HTML file option.)
Chrome will give the HTML file a name containing the current date.
Click the Firefox menu, point to Bookmarks, and select Show All Bookmarks. (You can also press Ctrl+Shift+B to quickly open the bookmarks library window.)
Click the Import and Backup menu and select Export Bookmarks to HTML. (The Backup option will create a .json file, which other browsers can’t open.) Use the Import Bookmarks from HTML option here to import bookmarks in the future.
Firefox will give the backup file a name of “bookmarks.html” by default. You may want to change the file name and add more information, such as the date.
Click the star-shaped favorites icon, click the little arrow to the right of Add to favorites, and select Import and Export.
Select the Export to a file option and click Next.
Check the Favorites checkbox and click Next.
Select the favorites you want to export – to export all your favorites, select the favorites folder at the top. (It’s selected by default.)
Provide a name for the file. It’s named bookmark.htm by default, but you may want to name it something like bookmarks_date.html. Click Export and IE will create a backup file.