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.

Honeyview is a free, portable, lightweight and very fast universal image viewer and comic reader, developed by Bandisoft from South Korea. It comes with clean and simple user interface, powerful features, and fast reading ability, can quickly zoom in/out the picture and perform filter processing through the means of optimization, and is a rare image browser and comic reader.

nomacs is a free, open-source and cross-platform universal image viewer & simple editor from Austria. If you have many photos to view, edit or manage, this software will be a very convenient choice. In addition to the common image formats, it also supports some proprietary image file formats such like RAW and PSD.

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.

WebP is a new modern image format that supports both lossy and lossless compression launched by Google for Web use. In the same quality, it has much smaller file size than JPEG and PNG formats of images. If all goes well, WebP could soon become the new standard of Web images.