Remove seen from Facebook chat Using Mozilla Firefox

Remove seen from Facebook chat Using Mozilla Firefox

1. Go to Unseen installation page by clicking this. From there click Add to Firefox.

2. Click Install Now.

3. Add-on is now installed!

*If you ever have to, you can disable this add-on. For some reason Firefox doesn’t have this neat disable/enable button near address bar, so you have to do this hard way.

1. Click Firefox from top left corner and from there click Add-ons

2. Select Extensions from left panel.

3. Click Disable where you can see Unseen.