Twitter sharing not working

Note: Twitter recently announced that they removed the image preview from the Twitter Card validator. More information can be found here

There are a number of reasons that sharing on Twitter fails to display correctly. Twitter’s card validator will provide you with a lot of information that might help narrow down the issue.

Go to Twitter’s card validator.
Log in, if requested.
Enter the URL you wish to check.
Click ‘Preview card’.
A preview is displayed under ‘Card preview’.

Twitter shows the wrong title, description, or image

The most common cause for Twitter using the wrong image is wrong or multiple Twitter meta tags. Please view the source code for the page.

Multiple sets of Twitter meta tags

If the source code has multiple sets of Twitter meta tags, another plugin or theme feature is set up to create tags. If you are unsure what outputs the additional tags, a conflict check can help.

One set of Twitter meta tags

If the source code has one set of Twitter meta tags and the tags have the correct information but Twitter doesn’t use it, the URL was likely shared recently. Your content is cached by Twitter for 7 days after a link to your page with card markup has been published in a tweet.

If the source code has one set of Twitter meta tags and the tags have the wrong information, please check that custom tags have been set correctly.