Dollchan Extension is a robust Firefox add-on designed to optimize user interactions on imageboards like 4chan and 2ch. This extension elevates the functionality of its predecessor user script by offering a variety of features that significantly enhance the browsing experience. Users can send posts without needing to refresh, receive notifications for new threads, and hide posts based on customizable settings. Additionally, it allows for complete thread saving, direct expansion of threads on index pages, and seamless navigation through linked posts and media.

The extension also introduces endless scrolling for index pages, embeds video players for links, and enables image uploads with preview thumbnails in reply forms. Its compatibility with various imageboard engines further broadens its usability. With convenient hotkeys for quick access to features and the ability to apply personalized CSS rules, Dollchan Extension provides a comprehensive toolkit for anyone looking to improve their imageboard usage.