I'm trying to capture an image of a website using wkhtmltoimage. It is not working for webpages built using Polymer. For example,
wkhtmltoimage https://elements.polymer-project.org/browse?package=google-web-components aaa.jpg
leaves me with a long white rectangle for an image. I am getting similar results with wkhtmltopdf.
How can I capture an image of a website built with Polymer?