Supports all major graphic formats ( BMP, JPEG, JPEG 2000, animated GIF, PNG, PCX, TIFF, WMF, ICO, and TGA), with a focus on popular digital camera RAW formats such as Canon's CR2 and CR3, and Sony's ARW.If in fullscreen mode, pops up an image gallery, detailed image information, editing options, or program options at the border being touched by the mouse.Preview of quality loss when saving in lossy file formats (such as JPEG).Portable version to be used without installation, typically installed on USB flash drive, including all user settings.Color space management (partial, it ignores the monitor profile).Batch operations including rename and convert.

Custom order arranging, via drag-and-drop, and automatic renumbering.

Support for multi-monitor configuration.

Relatively fast HQ image thumbnail viewing, using Lanczos resampling algorithm.The program also includes basic image editing tools. FastStone Image Viewer is an image viewer and organizer for Microsoft Windows, provided free of charge for personal and educational use, as of version 7.0.

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