Twitter Image Downloader is a Firefox extension designed to enhance the experience of downloading images from Twitter and TweetDeck. Users can easily download images by right-clicking on them, which reveals a context menu option labeled 'download original image.' This feature simplifies the downloading process significantly, as images are automatically renamed using the poster's username and tweet ID, following a systematic naming convention. The format for saved images is '[username]-[tweetID.extension],' ensuring clarity and organization, especially when multiple images are uploaded in a single tweet.

Despite its efficiency, the extension does encounter limitations when used with TweetDeck, particularly with images linked through anchor tags, which can affect the renaming process. In such instances, the name defaults to '[username]-[tweetID].[extension].' Users are required to refresh their Twitter page prior to the initial use of the extension. Additionally, there is a possibility that the extension may become unavailable due to updates on Twitter or Chrome, and while a source code repository is accessible, not all user support requests may be fulfilled.