I n Firefox, right-click a page, select View Page Info, and click Permissions. You can also click the website’s icon in your address bar and click More Information.

From here, you can change whether the website can use specific plugins, access your location, enter full-screen mode, and do other things. You can also control whether a website can load images from here, so you could prevent a particularly heavy website from loading images.

Firefox also has a permissions manager that lets you see which permissions you’ve configured for different websites and change them all in one place. It’s one of Firefox’s hidden about: pages. To access it, type about:permissions into your Firefox address bar and press Enter.

Please let us know if this solved your issue or if need further assistance.

Note that the about:permissions is gone in Firefox 45 and later.

There is possibly no need to set specific permissions for this website. When Firefox shows that no permissions are set then this means that all settings have their default value.

You can see a special padlock at the left end of the location/address bar.

• a padlock with a strike through means that mixed active content is blocked.
• a padlock with an exclamation mark attached means that mixed passive content (e.g. images) is present, but not blocked.

The shield icon, previously used for mixed active content, is now used for Tracking Protection.

• https://support.mozilla.org/en-US/kb/mixed-content-blocking-firefox
• https://support.mozilla.org/en-US/kb/control-center-site-privacy-and-security-firefox

• https://developer.mozilla.org/Security/MixedContent