There are many possible elements that can increase the size, weight and load of a WordPress website and does not escape from this danger. In fact, there are default behaviors of our beloved CMS contributing to overload the size of your website .
One such WordPress default behaviors that contribute to taking up extra space in your facility is the management that makes the images you upload . I mean ...
Each time you upload a picture to illustrate an entry, WordPress automatically creates other sizes , lower than you uploaded. The idea is good, do not think, but based on the fact that you do not need to use your post the full size of the images you upload , resizing of HTML (you know, is pulling or shrinking the image) but it is better to use a version that best matches the width of your WordPress theme , and by the way you reduce the load time of your home (especially).
Perhaps it will seem too radical, but if you think about it why would you go up the 8 Mb picture?, would not it be better to reduce the pixels before uploading? .
Normally, except in sites dedicated to photography, never need to upload images larger than the display size on a regular basis your WordPress theme , so would not it be better not occupy space unnecessarily expensive hosting?.
Meno leave your decision, but you know how to do, andvery easy.