Not showing thumbnail



I am implementing web server now.
I want to show the thumbnail on twitter. but it doesn’t work now
this is my website url.
I already add twitter meta tag but when I tweet my url, just url is just upload.
How should I do for thumbnail to show up?


You should test your page in the cards validator. You’ll find that you don’t actually have a twitter:card field so there’s no card defined.

Also see our Troubleshooting and FAQ post for this category.

Note that you should not try to run your server on a non-standard port (:9999) for the cards crawler to work.

closed #3

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