We've been having a few problems with our images after we publish our articles. Within the posts they look fine. However, the feature image shown on our homepage for posts (e.g. 'how to sort out accommodation when you travel') are very blurry and pixelated. Please look at our site to see for yourself http://aspiringbackpacker.com
I've desperately been looking at how to fix this as think it looks unprofessional but have not been able to find an answer.
I am very basic with WordPress so any help you could give us would be much appreciated.