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HDRi Converter
Fast HDRI conversion for Windows. reaConverter processes large batches reliably, without crashes or timeouts.
How to Convert .hdri Images in Bulk
1. Install reaConverter
2. Select HDRI Files
3. Start Conversion
Step by step
See It in Action
For quick and effortless HDRI 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.
Edit & Enhance
Do more with your images
Converting HDRI images for use in a workflow? Touch up, transform, apply editing and effects to your images during conversion.
Our range of editing options includes such image processing actions as Resize, Rotate, Crop, Color Replace, Watermarks and more. Adjust actions include RGB, HLS, HSV, Brightness and Contrast. Auto-processing options are also available, such as auto-rotate and auto-crop.
User reviews
From those who tried it
Average User Rating:Last updated on July 29, 2026
Questions & Answers
HDRI images: Frequently Asked Questions
What are HDRI files?
The HDRi image format (High Dynamic Range image with infrared) is a specialized 64-bit RAW format designed to capture and store a wide range of luminance levels along with additional spectral data. Unlike standard HDR formats, HDRi includes an infrared channel alongside traditional RGB data, enabling more detailed image analysis and post-processing, especially in scientific, surveillance, and remote sensing applications. Its 64-bit depth allows for extremely high precision and dynamic range, preserving subtle variations in light and shadow across all channels. This format is ideal for advanced workflows requiring both visible and non-visible light information.
Can reaConverter open HDRI files?
reaConverter fully supports the HDRi image format – open, edit, and export HDRI files to any other popular file format with ease.
How do I change HDRI to another format?
reaConverter is a user-friendly tool for converting HDRI files. Once installed on your computer, it allows you to convert all your .hdri files at once with just a few clicks. You can even convert HDRI images directly from Windows Explorer using the right-click menu — fast and convenient.
Can I convert HDRI online?
If you only want to convert a few HDRI images, you are welcome to try our free online HDRI converter.
How can I turn HDRI files on my computer to another format?
The best way to convert HDRI 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 HDRI.
How can I automate HDRI 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 HDRI 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 hdri converter.
What else can I do with reaConverter?
Convert GIS filesConvert Gerber filesChange color spaceConvert RAW photosConvert DICOM files
What formats can I convert a HDRI file to?
Discover More
Beyond HDRI conversion
Convert .hdri 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.
