XnView

XnView is a multi-platform software used for viewing, converting, organising and manipulating graphic & video files. It is free of charge for non-commercial usage and easy to use. Since it contains plenty of functions found in paid image viewers and supports many image file formats which even ACDSee, a very powerful image organizer does not support, it is quite popular among Internet users.

XnView is multi-lingual, it supports English, French, German, Spanish, Basque, Italian, Danish, Norwegian, Greek, Estonian, Croatian, Slovak, Russian, Ukrainian, Hebrew, Arabic, Simplified and Traditional Chinese, Korean, Japanese, Vietnamese, etc. The toolbar buttons can be modified to a certain extent, or be replaced by altering skins.

XnView can show IPTC/EXIF/XMP metadata, and write IPTC metadata (but can not do batch writing of IPTC metadata, and this is the feature some XnView users have been longing for).

Also, XnView has been able to support more and more file formats (mainly image file formats). Until now, it can read more than 400 image file formats, some audio and video file formats, and write 75 image file formats. A JPEG/PNG/TIFF file embeded with an ICC profile is supported by XnView as well.

XnView can search files that have the same filename or data, and can search for similar graphics as well.

In addition, The display of the histogram of a picture is possible (IrfanView does not have this function). And within a few mouse clicks, scripts can be created to convert, manipulate and rename a batch of images in one go.

Not yet common among imaging software is lossless (without new encoding) turning, flipping and cropping of JPEG files. Several image editing tools are included, for instance color and size manipulation, several filters and effects (full version even includes Harry's Filters 3.0). Creation of advanced slideshows is possible as well. Furthermore, it can upload images to an FTP site or Imageshack, burn images to a CD or DVD (Nero Burning ROM required) with a few clicks (full version only).