The Page Info window gives you details about the page you're on and also lets you set custom permissions for that website. To open the Page Info window:
The Page Info window is organized into different panels. Each panel is described below.
The General panel includes basic information about the page such as its title, content type and size, as well as more technical data from the page source.
The Meta field displays any metatags located in the page's source code. These can include specifications on file type, character encoding, author, keywords, and more.
The Media panel displays the URL and type of all the backgrounds, images, and embedded content (including audio and video) that loads with the page. You can click on any item to find out more about it including its:
For any item, you can choose to save it to your hard drive by clicking the Save As… button.
Checking this optionpreference will prevent pages under the specified domain from loading images automatically.
Lists the URL and type of any web feeds associated with the page. To subscribe to a feed, click on its link in the list.
The Permissions panel lets you override optionspreferences for the domain listed after Permissions for. Uncheck the Use Default box to specify whether the page is allowed or blocked from doing the indicated action.
Lists installed plugins and specifies whether the domain should Always ask, Allow, or Block each plugin from loading. The Why do I have to click to activate plugins? article explains how these permissions are set for specific sites.
Specifies whether Firefox is allowed to tell the listed domain where you're located, using Location-Aware Browsing.
Specifies whether the listed domain is allowed to hide the mouse pointer.
Specifies whether the listed domain is allowed to launch the extension or theme installation dialog box. See the Security and passwords settings article for instructions on how to add or remove installation permissions for sites.
Specifies whether the listed domain may load images automatically.
Specifies whether the listed domain is allowed to store offline content.
Specifies whether the listed domain may launch pop-ups. See Settings for web content, pop-ups, fonts, and languages for instructions on how to add or remove pop-up permissions for sites.
Specifies whether the listed domain is allowed to send Push notifications.
Specifies whether the listed domain may set cookies. See Settings for privacy, browsing history and do-not-track for instructions on how to add or remove cookie permissions for sites.
Specifies whether the listed domain is allowed to use your camera. This applies to sites that have video or image capture capabilities, such as video chat sites. You can set this to Always Ask, Allow, or Block.
Specifies whether the listed domain is allowed to use your microphone. This applies to sites that have audio recording capabilities, such as voice conferencing sites. You can set this to Always Ask, Allow, or Block.
The Technical Details section displays whether the connection is encrypted for privacy reasons, and if so, what type or strength of encryption was used.