FB unseen - Chrome
Blocks the ”seen” feature of the facebook messenger.
Sick of the new "seen" feature of facebook? Remove the read receipts with this extensions and your friends will no longer be able to see if you read their messages. You will still be able to see if they read your messages.
-(Additionally you get a button to mark messages explicit as read.)- Currently not working, sorry, visit my website for more information .
FB unseen - Chrome Website - FB unseen - Chrome