change image size on profile

You can set the size of an image with width="..." and height="..." on the img tag, or else from CSS with width: and height: (remember to add units in this case, probably px). Hope this helps!

are you uploading them to imgur first? once it's on imgur you can choose the size that works best.

Almost all the time width="100%" does the trick. Just add it to the image tag like:

<img src="IMAGE_URL_HERE" width="100%" />