C4 Converter

Stop converting C4 files one by one. reaConverter processes entire folders — drag, drop, click Convert, done.

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C4 Files
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How to Convert .c4 Files in Bulk

1. Install reaConverter

Download reliable C4 conversion software to convert multiple .c4 files and folders in one go.
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Install reaConverter

2. Select C4 Files

Select C4s from a folder or drag and drop them into reaConverter, then choose the desired output format.
reaConverter - Load C4 files

3. Start Conversion

Click Convert to start the bulk conversion of all selected C4 files. The process will begin right away.
reaConverter - Start C4 conversion

Convert C4 on your PC

For quick and effortless C4 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 C4 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 November 26, 2025
"I was skeptical at first, but reaConverter exceeded my expectations. The interface is intuitive, and the advanced settings let me tweak outputs perfectly. Plus, the customer support is fantastic!"
Sarah Lane
Sarah Lane
Satisfied Customer
"For cross-platform compatibility, JPEG remains the gold standard. reaConverter’s precision conversions ensure perfect results every time, whether for presentations, websites, or client deliverables."
Paul Baker
Paul Baker
Happy User
"I'm really impressed with this software - it converts files between formats incredibly fast!"
Lin Zhang
Lin Zhang
Happy User
"Enable shell integration for lightning-fast file conversions directly from Windows Explorer."
R. Lewis
R. Lewis
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
"Exactly what I needed! Simple, fast, and no bloat. I use reaConverter Lite to resize and convert batches of images for documents. The presets make it super easy, and everything works smoothly."
Mark Jones
Mark Jones
Happy User

C4 files: Frequently Asked Questions

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.

Can reaConverter open C4 files?

reaConverter fully supports the C4 file format – open, edit, and export C4 files to any other popular file format with ease.

How do I change C4 to another format?

reaConverter is a user-friendly tool for converting C4 files. Once installed on your computer, it allows you to convert all your .c4 files at once with just a few clicks. You can even convert c4 images directly from Windows Explorer using the right-click menu — fast and convenient.

Can I convert C4 online?

If you only want to convert a few C4 files, you are welcome to try our free online C4 converter.

How can I turn C4 files on my computer to another format?

The best way to convert C4 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 C4.

How can I automate C4 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 C4 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 c4 converter.

What else can I do with reaConverter?

Copy EXIF dataChange file creation dateConvert Gerber imagesCrop imagesConvert RAW files

What formats can I convert a C4 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 

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Explore our efficient C4 file converter that saves you time and effort by converting multiple .c4 files into different formats.
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