I’ve been approved for using the card “summary_large_image” and only recently noticed that the large image isn’t appearing. After doing some research, it looks like the robots.txt was blocking access to our files folder. I’ve since whitelisted Twitterbot but still nothing is showing up.
Metadata from sample article:
<meta name="twitter:card" content="summary_large_image"> <meta name="twitter:site" content="@dpreview"> <meta name="twitter:creator" content="@dpreview"> <meta name="twitter:title" content="Activeon launches Solar X action camera that's powered by the sun"> <meta name="twitter:description" content="A solar-powered action camera that can take 70% of its charge from the sun in just 30 minutes has been announced by Activeon. The Solar X uses a 16MP CMOS sensor to shoot a combination of stills and video footage, and can supplement its two-hour internal battery with four hours of additional charge from a pair of solar panels mounted on its detachable charging case. Read more"> <meta name="twitter:image" content="http://www.dpreview.com/files/p/E~C0x100S800x600T600x450~articles/0901286456/solar.png"> <meta name="twitter:url" content="http://www.dpreview.com/news/0901286456/activeon-launches-solar-x-action-camera-that-s-powered-by-the-sun">