So, do you mean that Images on certain websites aren't appearing? Let's try a few things that might help. First, try clearing your cache ([[How to clear the cache|How to clear the cache]]). Firefox stores temporary copies of frequently visit websites to your computer to speed web browsing, but that store sometimes doesn't work properly. Clearing it will help us determine if there is an issue there or not. If that doesn't work, the article [[Websites look wrong|Websites look wrong]] has several steps you can take to try to resolve your issue. Let me know if this helps.