https://support.mozilla.com/en-US/kb/Images+or+animations+do+not+show

You can use these steps to check if images are blocked: * Open the web page that has the images missing in a browser tab. * Click the website favicon ([[Site Identity Button]]) on the left end of the location bar. * Click the "More Information" button to open the "Page Info" window with the Security tab selected (also accessible via "Tools > Page Info"). * Go to the <i>Media</i> tab of the "Tools > Page Info" window. * Select the first image link and scroll down through the list with the Down arrow key. * If an image in the list is grayed and there is a check-mark in the box "<i>Block Images from...</i>" then remove that mark to unblock the images from that domain.