Convert C4 to HPG

Convert C4 to HPG without uploading files anywhere. reaConverter works entirely on your PC — fast, private, and handles thousands of files at once.

Manual C4 to HPG conversion wastes hours. reaConverter automates the process — just add files and click Convert. Everything happens offline on your computer — no uploads, no cloud risks.

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How to Convert Multiple C4 Files to HPG?

1. Download and Install reaConverter

reaConverter is a standalone Windows app — download, install, and start converting C4 files in under two minutes.

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Install reaConverter

2. Load your C4 files

Open reaConverter and add your C4 files. You can load individual files, entire folders, or even nested subfolders.

Drop your C4 files into the window or use File menu to browse and select folders.

Load your C4 files into reaConverter

3. Select HPG as output format

Choose HPG as the target format. Pick a destination folder or let reaConverter save files alongside the originals.

Select HPG as output format

4. Start C4 to HPG conversion

Hit Convert and let reaConverter do the work. The progress window shows status for each file in real time.

Start Conversion

After conversion, find your HPG files in the output folder. Click 'Show converted files' to open it directly.

C4 to HPG Converter

reaConverter offers the fastest, simplest solution for converting your C4 files into HPG in seconds - all files processed on your PC for maximum privacy and speed.

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Do more with your files

Converting C4 files for use in a workflow? 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 January 17, 2026
"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
"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
"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
"Finally an app that actually opens my weird files! Saves me from format frustration daily."
Kyle Brooks
Kyle Brooks
Happy User

C4 to HPG Conversion: FAQ

What are C4 files?

A C4 file represents an Edmics or Jedmics bi-level raster image. Jedmics stands for "Joint Engineering Data Management Information and Control System" and represents an initiative of the US Department of Defense. C4 Jedmics files contain bitmap images intended for military use and are considered very rare files.

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 C4 to HPG?

Yes! reaConverter instantly converts .c4 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.

Can I convert C4 to HPG online?

If you only need to convert a few C4 files to HPG format, feel free to try our free online free online C4 to HPG converter — perfect for small batches with no installation needed!

How can I turn C4 files into HPG on my computer?

The best way to change C4s 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 C4 to HPG.

How can I automate C4 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 C4 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 c4 to hpg converter for batch processing.

What else can I do with reaConverter?

Convert GIS filesConvert vector filesConvert picture color spaceChange file dateChange format settings

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