As of now, Resizr can rotate your images! This is not a huge feature, but it does help some people who needed it.
Images can be rotated 90 degrees clockwise or counter clockwise, or made upside down.
Also a minor fix: when images are scaled larger than 800 pixels wide, the image will not overflow outside of the 800 pixel html element it’s placed in. This fixes a strange bug for users of IE who were having the image overflow rescale other bits of HTML, making the slider widget work in a “not so smooth” manner.
I hope to continue to add more features as time allows.
Resizr is a free online tool for resizing photos. It's easy to use and will always be free! Resize A Photo Now!