Is a little plugin that gives you the ability to preview your Wordpress site at various different (random) screen widths. It adds an additional preview to the Edit screen that loads the page preview at a random width and lets you test other widths as well.
-- Version 1.1
- Added a 'Responsive Preview' link to the Admin Bar.
Thanks Massive thanks to Brad Frost (@brad_frost). The preview is based entirely on his work creating ish. https://github.com/bradfrost/ish.