Hi,
Starting from Firefox version 88, "View Page Info" is no longer available from the right-click page context menu. It can still be accessed from the Site Information panel panel:
- Click the padlock icon on the address bar
- Click the right > arrow and then click "More Information" in the next panel.
Alternatively, "Page Info" is available from the Menu bar, under the Tools menu and also by using the Ctrl + i (Windows/Linux) or Command + i (Mac) keyboard shortcut.
See the Firefox Page Info window article for more information.
