It looks and feels good.
Standard it implements it on all articles etc. But you can also exlude articles and categories, which is very useful.
However there is one thing for me I'm not that satified for:
You can select the width in pixels, ONLY. I have a responsive / scalable site and I cannot transform it for 100% width.. :(
All css is implemented in the plugin, no css files, so media queries aren't also possible.
But for the rest, standard non-scalable site it's great!
Thank you for your review!
You set the size for the browser output (max width), the box automatically scales to smaller widths like in your responsive template!