WAIncognito by 9gabr

This is an unofficial port of the extension.

FEATURES:

• Adds a new menu in WhatsApp™ Web that lets you toggle on and off the sending of:
  
  • Read receipts for messages (two blue ticks mark)
  • "Last Seen" updates (presence)
• Works for groups
• Works for statuses/stories
• Keeps deleted messages and restores them later
• Lets you set a safety timeout that allows you to automatically send the read receipts after a certain time from opening the message. During this time you are given a cancel button, which prevents the receipt from being sent.
• When read receipts are blocked, the unread messages counteres show up transperent, and when you read them they turn red. This helps to tell when you are in invisible mode and it is safe to click on chats.
• If you want to mark a spesific chat as read anyway, you can open the sub-menu of it and choose "mark as read". A warning will show up and when you confirm, a read receipt will be sent.

Github

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LEGAL
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WhatsApp is a trademark of WhatsApp Inc., registered in the U.S. and other countries. This extension is an independent project developed by Tomer H. and has no relationship to WhatsApp or WhatsApp Inc.