Convert HDRI to HPG

HDRI to HPG made simple. Add files or folders, pick your settings, click Convert. reaConverter handles the rest — even thousands of files.

HDRI to HPG conversion is faster with the right tool. reaConverter handles everything from a few files to thousands in one batch. Processes files consistently every time, with full control over quality and output settings.

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How to Convert Multiple HDRI Images to HPG?

1. Download and Install reaConverter

reaConverter is a standalone Windows app — download, install, and start converting HDRI files in under two minutes. Built-in editing tools let you resize, crop, or watermark as you convert.

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Install reaConverter

2. Load your HDRI files

Launch reaConverter and drop in your HDRI files. The software queues everything for batch processing with consistent settings.

Add files by dragging them in, browsing folders, or using the right-click menu from Windows Explorer.

Load your HDRI files into reaConverter

3. Select HPG as output format

Pick HPG as output format and choose the destination folder where you want to save new .hpg files.

Select HPG as output format

4. Start HDRI to HPG conversion

Then simply press the Convert button and your conversion will begin in no time!

Start Conversion

Once the conversion is complete, you can find your HPG files in the destination folder you selected.

HDRI to HPG Converter

reaConverter offers the fastest, simplest solution for converting your HDRI files into HPG in seconds - all images processed on your PC for maximum privacy and speed.

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Do more with your images

Converting HDRI images for use in a larger project? With reaConverter, you can convert, edit, and enhance your images in one streamlined process.

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.

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User Reviews

Average User Rating:
Last updated on January 24, 2026
"reaConverter handles HPG files flawlessly. I use it to convert plot files to PDF for approvals, and the output is always accurate. The automation through Watch Folders and command-line is a big plus for speeding up our workflow."
Daniel M.
Daniel M.
Mechanical Engineer
"Finally, an HPG Converter That Just Works! Last week, we processed 237 HPG blueprints in 18 minutes. Previously, this took half a workday!"
Kevin Nguyen
Kevin Nguyen
Satisfied Customer
"An efficient all-in-one solution for image conversion and light editing, designed for maximum user-friendliness."
Elena Anderson
Elena Anderson
Happy User
"Enable shell integration for lightning-fast file conversions directly from Windows Explorer."
R. Lewis
R. Lewis
Happy User
"After 200+ conversions on my budget laptop (i3-1115G4/4GB RAM/Win11), reaConverter outperforms heavyweight tools. Zero crashes, low CPU usage during batch processing, and no internet dependency - exactly what professionals need."
Walter Morgan
Walter Morgan
Satisfied Customer
"5/5⭐ Finally! Does what it promises - converts AND tweaks images without complicated menus. Perfect for quick jobs."
J. Mitchell
J. Mitchell
Satisfied Customer

HDRI to HPG Conversion: FAQ

What are HDRI files?

SilverFast’s 64-bit HDRi RAW file is a TIFF that preserves a full 16-bit-per-channel RGB scan plus a separate 16-bit infra-red channel, giving 64 bits per pixel. The visible data stays completely unprocessed—no sharpening, gamma, or colour tweaks—while the IR map lets SilverFast’s iSRD (or compatible tools) later remove dust and scratches non-destructively, making it an ideal “digital negative” for archival film workflows.

What are HPG files?

HPG is a vector image format created in a standard programming language called HPGL (Hewlett-Packard graphics language). Other extensions created in this language include PLT, HP2 and PL2. All are called "plotter files" and are created by drawing programs such as AutoCAD to be printed using a device specialized in vector graphics. An HPG file uses a line series of two-letter codes to render an image and can also include parameters.

Can reaConverter convert HDRI to HPG?

Yes! reaConverter instantly converts .hdri to .hpg with perfect quality preservation. With its batch processing feature, you can convert multiple files at once in just a few clicks. You can even convert images directly from Windows Explorer using the right-click menu — fast and convenient.

What is reaConverter used for?

reaConverter is a software program used for converting images and other types of files from one format to another. It supports a wide range of file formats and allows users to convert multiple files at once, making it a valuable tool for graphic designers, photographers, and other professionals who work with digital images. reaConverter also includes features for resizing, cropping, and editing images, along with batch processing capabilities that help automate repetitive tasks.

Can I convert HDRI to HPG online?

If you only need to convert a few HDRI files to HPG format, feel free to try our free online free online HDRI to HPG converter — perfect for small batches with no installation needed!

How can I turn HDRI files into HPG on my computer?

The best way to change HDRIs to HPGs on your PC is to install 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 to HPG.

How can I automate HDRI to HPG files conversion?

reaConverter supports all the most useful automation features such as right-click сonversion and Watch Folders for the most efficient automated files conversion in any software of this type.

Is there a way to convert HDRI files to HPG using the command prompt?

reaConverter provides full access to all its features via Windows command line, including a high-performance command-line hdri to hpg converter for batch processing.

What else can I do with reaConverter?

Convert GIS filesCopy EXIF dataConvert PDFAdd watermark on photoSet file date

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