*click the Control Center 'i' icon at the left end of the location/address bar

You can find this permission in "Tools -> Page Info -> Permissions" *https://support.mozilla.org/en-US/kb/page-info-window-view-technical-details-about-page ---- You can inspect cookies and passwords and permissions for the domain in the currently selected tab via these steps: *click the Control Center 'i' icon at the left end of the location/address bar *click the arrow to expand the security message *click "More Information" to open "Tools -> Page Info" *click "Permissions" to inspect and modify permissions *click "Security" to inspect and modify cookies and passwords in a standalone window