HDRU Converter

Try our offline HDRU file converter. Every year thousands of users around the world save thousands of hours using reaConverter!

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reaConverter
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HDRU Files
Online

How to Convert .hdru Files in Bulk

1. Install reaConverter

Download reliable HDRU conversion software to convert multiple .hdru files and folders in one go.
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Install reaConverter

2. Select HDRU Files

Select HDRUs from a folder or drag and drop them into reaConverter, then choose the desired output format.
reaConverter - Load HDRU files

3. Start Conversion

Click Convert to start the bulk conversion of all selected HDRU files. The process will begin right away.
reaConverter - Start HDRU conversion

Convert HDRU on your PC

For quick and effortless HDRU file handling on your PC, reaConverter offers powerful conversion tools with batch processing. Best of all, it works entirely offline — ensuring your sensitive data never leaves your computer.

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Do more with your files

Converting HDRU files for use in a larger project? reaConverter offers many ways to process files, so you can customize them according to your requirements.

Our range of editing options includes auto-processing options such as auto-rotate, auto-crop, watermarking and more. Change Color Space, copy Metadata, set DPI, manage ICC Profile, control Bit Depth.

Conversion features
Image editing

User Reviews

Average User Rating:
Last updated on September 01, 2025
"An efficient all-in-one solution for image conversion and light editing, designed for maximum user-friendliness."
Elena Anderson
Elena Anderson
Happy User
"We use reaConverter in our department to handle image and document conversions for multiple teams. The Watch Folders function is brilliant — I configured different folders for different workflows, and now everything happens automatically in the background. No more manual conversions or missed files. Rock-solid performance!"
James L.
James L.
IT Manager
"I firmly believe working with JPEG — the universal format supported by all devices and apps—is the wisest choice. reaConverter handles these conversions flawlessly."
Ava Thomas
Ava Thomas
Happy User
"Our volunteer team uses reaConverter to prepare images for fundraising campaigns. The learning curve was minimal, and the results are professional-grade. The customer support team even helped us customize a workflow — fantastic service!"
Jason P. Bailey
Jason P. Bailey
Non-Profit Coordinator
"Before reaConverter, I was the ‘File Conversion Guy’ at work — a title I never asked for and definitely didn’t want. Then I found the Watch Folders feature, and suddenly I was free! Now, files convert themselves while I sip coffee and pretend I'm still working hard. My coworkers think I'm a wizard. Thanks reaConverter, for saving my sanity and boosting my fake productivity!"
Ben H.
Ben H.
Overwhelmed Office Hero
"This program is incredibly simple and user-friendly, even beginners can use it with ease. It supports batch processing, works offline, and runs smoothly on my aging Acer Aspire laptop. Best of all, the output quality is outstanding!"
Kevin Harris
Kevin Harris
Happy User

HDRU files: Frequently Asked Questions

What are HDRU files?

The HDRU image format is not commonly used and is specifically linked to an outdated image software, Apollo HDRU. Viewing HDRUs with standard image viewers can be a challenge due to their rarity and age. For this reason, it is recommended to convert HDRUs to more widely accessible formats such as PNG or JPG, if you happen to come across one.

Can reaConverter open HDRU files?

reaConverter fully supports the HDRU file format – open, edit, and export HDRU files to any other popular file format with ease.

How do I change HDRU to another format?

reaConverter is a user-friendly tool for converting HDRU files. Once installed on your computer, it allows you to convert all your .hdru files at once with just a few clicks. You can even convert hdru images directly from Windows Explorer using the right-click menu — fast and convenient.

Can I convert HDRU online?

If you only want to convert a few HDRU files, you are welcome to try our free online HDRU converter.

How can I turn HDRU files on my computer to another format?

The best way to convert HDRU files on your PC is to get a quality piece of software, such as reaConverter. This software is extremely efficient in managing a wide range of batch files conversions, including conversion from HDRU.

How can I automate HDRU files conversion?

reaConverter supports all the essential automation features, such as right-click сonversion and Watch Folders, for the most efficient automated file conversion in any software of its kind.

Can I convert HDRU files using scripts or the command-line interface?

reaConverter provides full access to all its features from the Windows command-line shell, including the command-line hdru converter.

What else can I do with reaConverter?

Convert vector filesConvert picture color spaceCopy IPTC dataConvert DICOM filesResize photo

What formats can I convert a HDRU file to?
ai  apng  avif  bmp  bpg  cal  cg4  cgm  cin  dcx  dds  dgn  dis  drw  dwf  dwg  dxf  emf  epi  eps  fax  fits  flif  gbr  gif  hpg  hru  ico  iff  iges  igs  jp2  jpeg  jpg  jxl  jxr  mif  mtv  pcl  pct  pcx  pdf  pgm  pic  plt  png  ppm  prc  ps  psd  qoi  qrt  rad  rla  sgi  shp  svg  svgz  tga  tif  tiff  webp  webpll  wmf  wmz  wpg  wrl  xbm  xpm 

Discover more

Explore our efficient HDRU file converter that saves you time and effort by converting multiple .hdru files into different formats.
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