There is no actual icon to turn add-on on & off for tabs

Not need any permission, very tiny expansion (only 15K Byte), The only drawback is that the GUI is too simple， and interval fixed to 5 seconds.

Missing interval settings...

TH

1
Please, add the option to change interval.
2
Also, it would be great to see context menu (as an alternative to the button) for the tabs (RMB).

And... did you have an "autoreload" on github?