Windows Photo Viewer, a built-in picture viewing program in Windows, is not only very slow to open large pictures, but also very laborious to view large-sized pictures (you need to reach the top with great effort, and then drag and drop pictures with great effort). In order to obtain a faster, more efficient, and better image viewing experience, we often need to use a third-party image viewer.

ACDSee (now called: ACDSee Photo Studio) was ever one of the long-standing (first released in 1994), most popular image browsing software that came with friendly UI, simple & humanized operation, high-quality and very fast image decoding method, comprehensive image formats support and powerful graphics file managing functions. All this won and accumulated the most users around the world for it (it basically was must-have especially for architecture and image processing related industries, including photography enthusiasts and professional graphic designers.