The HDR format is associated with ArcInfo, a piece of software initially released in the 1980s by the Environmental Systems Research Institute (ESRI). ArcInfo represents a geographic information system and it was originally designed only for command-line operation, but in recent years it had a graphical user interface release as well. HDR files are considered rare and are difficult to open using regular image viewers.
The quick and simple way to handle your files is to get a quality piece of software, such as reaConverter. This software is extremely efficient in managing a wide range of batch conversions. As you will soon realize, reaConverter will help you avoid spending countless hours trying to figure out how to convert multiple HDR files as once.
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