Tweetdeck, the Mac app billed by Twitter as “the most powerful Twitter tool for real-time tracking, organizing, and engagement,” has just received a major update.

First and foremost, the latest update to Tweetdeck adds support for sending and viewing photos in direct messages.

Photo support in direct messages was introduced by Twitter just three weeks ago to its official iOS app, in what is considered a direct response to the increasing popularity of Snapchat. A couple of days ago, it was added to the popular third-party Twitter client Tweetbot 3 — albeit offering just the viewing part since sending images in direct messages is not yet supported by Twitter’s public API.

But seeing as Tweetdeck is owned by Twitter itself, it’s not surprising that it has been updated with said capability as well. Just tap the camera icon when composing a direct message to attach an image from your Mac to your message.

The new Tweetdeck update also adds the ability to add tweets to custom timelines via URL. Introduced to Tweetdeck last November, custom timelines are special columns that you can control by selecting the tweets you want to include in them.

Previously, adding tweets to custom timelines was possible only via drag-and-drop, the More Actions menu, or the keyboard shortcut “C.” Now, though, the same can be done by adding tweets by URL. Just enter the tweet URL at the bottom field of a custom timeline to add the corresponding tweet.

Finally, the latest update to Tweetdeck fixes a bug that causes the login session to not persist across restarts.

The new version of Tweetdeck is available now in the Mac App Store for free. The app is compatible with OS X 10.6 or later.