An image viewer (also known as image browser) is a desktop application that can quickly display or handle stored graphical images in different graphics file formats. It can render images according to properties of the display such as display resolution, color depth, and color profile. Other image viewers have advanced features like editing and web publishing.

Below are a selection of Image Viewers that provide more features than the default application and how they compare against it.

This article overviews five image viewers available for Ubuntu and also includes at the end a list of another five ones which either are no longer maintained or are based on older libraries (KDE3 for example).

Gwenview is one of the best image viewers ever existed. It is fast, quick, modern, shiny, particularly in full-screen mode, and has basic photo editing functions.

This article overviews 8 popular image viewers available in the Ubuntu repositories.

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This article is about how to use the Pinta graphical editor to edit pictures and covers some of its most important features. Pinta is a lightweight image editor for Linux and is far more easier to handle than Gimp but still has a large variety of tools and features to use.

If your desktop hardware includes a graphics processing unit (GPU), you can do some cool image processing with the CVL suite of tools, which includes in image viewer, an image tone mapper, and a command-line tool for non-interactive image processing.

ISO Master is a graphical editor for ISO images with support for ISO9660, RockRidge, and Joliet file names. It is useful for extracting, deleting, or adding files and directories to or from an ISO image. It is based on the bkisofs and GTK2 libraries.