Reasons for large images not appearing?


#1

I’ve just enabled summary cards with large images for https://speakerdeck.com/leereilly/risk. All of the meta’s displaying with the exception of the image. In this case, the image size is 54k @ 1024x78px, and the response shows:

HTTP/1.1 200 OK
x-amz-id-2: aNBA2ursM1EPRESzyfQsvgvlGA3x8du9OuCXvtwbZ6VwTzzUAufyrurC+BJAaxj1
x-amz-request-id: 31B8253BDCB73D8D
Date: Fri, 21 Feb 2014 19:40:53 GMT
Cache-Control: max-age=315576000
Last-Modified: Fri, 20 Jan 2012 19:17:28 GMT
ETag: "ad3f804d9ad8f3b464898c68af21d752"
Accept-Ranges: bytes
Content-Type: binary/octet-stream
Content-Length: 55032
Server: AmazonS3

Relevant code snippet from the page:

It passes the Twitter card validator test and looks like it should work, but the images aren’t showing. Can anyone tell me why…?

Cheers,
Lee


#2

https://speakerd.s3.amazonaws.com/robots.txt prevents Twitterbot to download the image.
More info here: https://dev.twitter.com/docs/cards/getting-started#crawling