问题
I have a webpage with some standard open graph meta tags for Facebook. My problem is that if I place a link to the page in a facebook status message it shows only 2 of 5 images. The 2. and the 3. but not the others.
My first thought was: I did something wrong so I checked the page with the FB Debugger but there it shows all images. I waited a week now but the problem did not solve it self.
Any thoughts on this?
This bug might be related, but it also has no solution: https://developers.facebook.com/bugs/107341092730662
回答1:
The issue is related to the dimensions of images you provide. The images that omitted from appearance in feed are those having ratio of sides more than 3:1.
The page you provided have 5 images (those with ratio more than 3 will not be used by Like Button):
250 × 67 -> ratio 3.73
250 × 186 -> ratio 1.34 (this image will work)
250 × 166 -> ratio 1.5 (this image will work)
251 × 59 -> ratio 4.25
172 × 54 -> ratio 3.18
There point is to avoid usage of too long or too wide images that may not be suitable for displaying in small sizes in feed.
回答2:
I have seen conflicting information on whether the image has to be 50px x 50px, or as large as 200px x 200px. As of today (9 Sept. 2012), it is clear to me from both experience and from FB's own documentation, that:
the MINIMUM size of a graphic must be 200px x 200px, to be successfully used as the og:image.
Otherwise, I believe the aspect ratio and format info have not changed from that noted by previous posters.
回答3:
I found that thiswarning occured if there is a space at the end of the desciption.
来源：https://stackoverflow.com/questions/10042523/facebook-does-not-show-all-open-graph-images