There are 10 other file types using
the HDR file extension!

empty icon.hdr - Procomm Plus message header

empty icon.hdr - DataFlex header data

empty icon.hdr - ArcView header data

hdr icon.hdr - Radiance map

empty icon.hdr - InstallShield setup header

empty icon.hdr - MicroSim PCBoard hole-drill schedule report

empty icon.hdr - ENVI header data

empty icon.hdr - Transport Fever texture

empty icon.hdr - Microsoft IIS Server NNTP header data

empty icon.hdr - Mail.dat header data

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HDR file extension - Photomatix HDR image

What is hdr file? How to open hdr files?

File type specification:

Bitmap image file type icon Bitmap image file type

The hdr file extension is also related to Photomatix software and used for its default HDR image format.

In image processing, computer graphics, and photography, high dynamic range imaging (HDRI or just HDR) is a set of techniques that allows a greater dynamic range of exposures (the range of values between light and dark areas) than normal digital imaging techniques. The intention of HDRI is to accurately represent the wide range of intensity levels found in real scenes ranging from direct sunlight to shadows.

Also used for another image formats like Apollo HRDU, Analyze from Mayo Foundation Biomedical Imaging Resource etc. Probably unrelated, just sharing same extension and file type.

The default software associated to open hdr file:

Photomatix Pro icon

Photomatix Pro  Microsoft Windows software

Company or developer:

Photomatix Pro is a program used to create, edit and process HDR images and photographs.

Help how to open:

You can work with these HDR files using Photomatix software.

How to convert:

Use compatible tools to export *.hdr files to other formats.

List of software applications associated to the .hdr file extension

Recommended software programs are sorted by OS platform (Windows, macOS, Linux, iOS, Android etc.)
and possible program actions that can be done with the file: like open hdr file, edit hdr file, convert hdr file, view hdr file, play hdr file etc. (if exist software for corresponding action in's database).

Click on the tab below to simply browse between the application actions, to quickly get a list of recommended software, which is able to perform the specified software action, such as opening, editing or converting hdr files.

Software that open hdr file - Photomatix HDR image

Programs supporting the exension hdr on the main platforms Windows, Mac, Linux or mobile. Click on the link to get more information about listed programs for open hdr file action.

Microsoft Windows:

Main software associated with hdr file by default:
Photomatix Pro small icon Photomatix Pro
Other suggested software:
Adobe Photoshop small icon Adobe Photoshop

Apple macOS / Mac OS X:

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