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HDR Converter
HDR conversion in your browser, free and unlimited. Files never leave your machine. reaConverter for Windows handles the other 800+ formats in batch.
How to Convert .hdr Images in Bulk
1. Install reaConverter
2. Select HDR Files
3. Start Conversion
Step by step
See It in Action
For quick and effortless HDR 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.
GIS Toolkit
Do more with your GIS data
Need HDR data as something anyone can open? reaConverter renders imagery and elevation grids into standard images and documents without QGIS or ArcGIS, and works through whole folders in one pass.
- Render imagery, elevation grids and scanned charts to TIFF, PNG, JPG or PDF
- Resize, crop and set DPI on the output in the same run
- Bring tiles, scenes and grids from many sources into one consistent format
- Convert incoming survey and field data automatically with Watch Folders
- Script GIS conversions from the command line for pipelines and scheduled jobs
- Keep cadastral, utility and client data on your PC: nothing is uploaded
User reviews
From those who tried it
Average User Rating:Last updated on July 30, 2026
Questions & Answers
HDR images: Frequently Asked Questions
What are HDR files?
The HDR (High Dynamic Range) file format is used to store images with a broader range of color and brightness levels than standard formats. It preserves rich details in both dark and bright areas of a scene, making it ideal for realistic lighting in 3D rendering, photography, and visual effects. HDR files often use floating-point precision and are commonly applied in imaging workflows that require high fidelity and accurate tone mapping.
Can reaConverter open HDR files?
reaConverter fully supports the HDR image format – open, edit, and export HDR files to any other popular file format with ease.
Do I need QGIS or ArcGIS to convert HDR files?
No. reaConverter reads HDR files on its own, so the conversion needs no GIS installation and no licence. It handles whole folders at once, which suits survey archives, tile sets and data deliveries that have to reach people working in other software.
How do I change HDR to another format?
reaConverter is a user-friendly tool for converting HDR files. Once installed on your computer, it allows you to convert all your .hdr files at once with just a few clicks. You can even convert hdr images directly from Windows Explorer using the right-click menu — fast and convenient.
Why choose offline conversion with reaConverter?
Keep your sensitive data 100% private with offline processing that never exposes files to cloud risks. Our software meets strict compliance standards (GDPR, HIPAA, CCPA) while handling confidential documents for legal, healthcare and financial sectors.
Can I convert HDR online?
If you only want to convert a few HDR images, you are welcome to try our free online HDR converter.
How can I turn HDR files on my computer to another format?
The best way to convert HDR images 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 HDR.
How can I automate HDR 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 HDR 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 hdr converter.
What else can I do with reaConverter?
Convert GIS filesConvert CAD formatsSet file dateConvert vector imagesSet new DPI
What formats can I convert a HDR file to?
Discover More
Beyond HDR conversion
Convert .hdr files in batches of any size, with editing and processing applied along the way. The same tool also handles 800+ other formats, including CAD, medical imaging, and GIS.
