I've been doing some research and I came across this little number: http://www.xpertdeveloper.com/2012/10/webpage-screenshot-with-html5-js/ that allows you to turn HTML into a blob (essentially as a screenshot)... HTML2Canvas does this, too, but not quite as well: http://html2canvas.hertzen.com/
However the problem is that's where I'm stuck. I'd ideally like to render HTML to an image (either as a blob or a local file) and upload it to Facebook via the Graph API.
My problems start with < 3.0 Android browsers not being able to accommodate blobs. Has anyone come up with a solution that would work on Phonegap Build that would allow me to do this? Since I'm on Build I'm probably limited to Javascript, HTML5, and whatever Android / Safari allows.
The question is old, but maybe the answer will help someone.
You can use the screenshot plugin for iOS and Android.
For details, read the Documentation on Github