Chrome: Twitter’s web interface generally pales in comparison to dedicated apps like Tweetbot, but Previeweet adds much-needed image thumbnails to your timeline to make the interface more app-like.
The extension is incredibly simple. Once you install it, just refresh your timeline, and you’ll suddenly see thumbnails to the right of Tweets with multimedia that weren’t there before. The thumbnails also include a small icons indicating whether they’re pulling from YouTube, Instagram, Twitter, or some other source. Of course, officially-sanctioned services like Vine videos and Twitter photos will still open a large preview within the Tweet if you click the thumbnail, but others like Instagram will open a new tab.
If you’re stuck using Twitter’s web interface, you should also consider learning its keyboard shortcuts and installing the Classic Retweet extension. These add-ons won’t make it quite as powerful as a native app, but they certainly narrow the gap.