Twitter rolled out an update today that makes it easier to view photos and videos on the site, specifically photos and videos in profiles or search results.
Now when someone tweets a photo, you can click on it directly from search results or that person’s profile page and view a larger version of the picture without being taken to another page.
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Media galleries on Twitter now include video from partners who are already supported in Expanded Tweets. That means you see videos from Vine, YouTube, and Vimeo show up in the Media Gallery.