BookmarkAndClose

The chrome extension is here https://chrome.google.com/webstore/detail/tabhoarder/ghaiildlkpmlhlbmpcjjachjcciohhpn?hl=en

Start up:

Head to chrome://extensions in your browser

Click developer-mode checkbox in the top right corner

Click Load unpacked extension which will ask you to load a file.

Upload the BookmarkAndClose folder