Facebook pictures are small now on my iphone?

Starting yesterday when i got on facebook using safari on my iphone, all the pictures showed up small, not full screen like normally. This happens on my timeline, my profile, cover photos, other peoples profiles. But when i click the image its normal size. This is really frustrating. Any ideas on how to fix it? I asked my friend who also has an iphone if hers was doing the same &'and she said no. On the facebook app it shows up fine but that app doesn't update all the stuf that the internet version does &'and it doesn't put posts in order from most recent!

There could be some problem with the app but also things on timeline, profile and cover, are if done with another site it's pretty easy on phones. You could have a look at the website i included as source, and give it a try.
Best wishes.

Yes, the same thing is happening to me all of a sudden. It's driving me crazy!