hello, please try to [[Reset Firefox – easily fix most problems|reset firefox]] and see if this can address the issue...

If you have made changes to Advanced font settings like increasing the minimum/default font size then try the default minimum setting "none" and the default font size 16 in case the current setting is causing problems. *Tools > Options > Content : Fonts & Colors > Advanced > Minimum Font Size (none) Make sure that you allow pages to choose their own fonts. *Tools > Options > Content : Fonts & Colors > Advanced: [X] "Allow pages to choose their own fonts, instead of my selections above" It is better not to increase the minimum font size, but to use an extension to set the default page zoom to prevent issues with text not being displayed properly. If images are missing then check that you aren't blocking images from some domains. *Press the F10 key or tap the Alt key to bring up the hidden "Menu Bar" temporarily. *Check the permissions for the domain in the currently selected tab in "Tools > Page Info > Permissions" *Check "Tools > Page Info > Media" for blocked images *Select the first image link and use the cursor Down key to scroll through the list. *If an image in the list is grayed and "<i>Block Images from...</i>" has a check-mark then remove this check-mark to unblock images from this domain. Make sure that you do not block (third-party) images, the permissions.default.image pref on the <b>about:config</b> page should be 1. ---- Make sure that you haven't enabled a High Contrast theme in the Windows/Mac Accessibility settings. Make sure that you allow pages to choose their own colors. *Tools > Options > Content : Fonts & Colors > Colors : [X] "Allow pages to choose their own colors, instead of my selections above" Note that these settings affect background images. See also: *http://kb.mozillazine.org/Website_colors_are_wrong ---- There are extensions like Adblock Plus (Firefox/Tools > Add-ons > Extensions) and security software (firewall, anti-virus) that can block images and other content. See also: *https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes *http://kb.mozillazine.org/Images_or_animations_do_not_load *http://kb.mozillazine.org/Websites_look_wrong