Convert QTK to CG4

Turn QTK camera files into CG4 quickly. reaConverter handles batch RAW conversion with options for exposure, color, and quality.

Online converters too slow for your QTK files? reaConverter works locally and handles unlimited batches. All processing runs locally on your PC, so your files stay private and secure. Handles camera RAW files with professional color management options.

1. Download and Install reaConverter

First, grab reaConverter from the download button below. Installation is fast, and the software runs offline — no account or signup needed. Apply image edits like resize, crop, or color adjustment while converting.

Install reaConverter

2. Load your QTK files

Open reaConverter and import your .qtk files. No file limits, no slowdowns. Add as many as you need.

You can drag-and-drop files, browse to a folder, or add entire directory trees including subfolders.

3. Select CG4 as output format

Pick CG4 as the output format. Set the destination folder and optionally configure resolution, quality, or file naming.

4. Start QTK to CG4 conversion

Click the Convert button to start. reaConverter will process all your files with the settings you selected.

When finished, your new .cg4 files will be waiting in the destination folder.

QTK to CG4 Converter

reaConverter offers the fastest, simplest solution for converting your QTK files into CG4 in seconds - all photos processed on your PC for maximum privacy and speed.

Download Free Trial

Do more with your images

Converting QTK 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.

Image editing tools

User Reviews

Average User Rating:
Last updated on January 25, 2026

"reaConverter saved our team hundreds of hours by digitizing decades of CG4 archives in weeks—not months. Its resolution scaling preserved every detail, even in files older than some team members!"

Anna K.

Satisfied Customer

"Your solution was buried deeper in search results than it should be. After struggling with unclear alternatives, I found your guides — finally, instructions that made sense for a first-time user like me. Excellent work!"

Richard E. Miller

Satisfied Customer

"Converts files in seconds! Finally a tool that's both fast and simple to use."

Wei Chen

Happy User

"I'd been searching for reliable conversion software forever — reaConverter has everything I need! After installing and watching the tutorial, I had my files converted to the perfect format in minutes. Flawless experience!"

Sanjay Mehta

Satisfied Customer

"An ultra-fast solution for minimizing file sizes. The entire conversion process takes just 3 minutes!"

Logan B.

Satisfied Customer

"I use the online converter — it’s quick and hassle-free!"

Jian Wong

Happy Online User

QTK to CG4 Conversion: FAQ

Can reaConverter convert QTK to CG4?

Yes! reaConverter instantly converts .qtk to .cg4 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 QTK to CG4 online?

If you only need to convert a few QTK files to CG4 format, feel free to try our free online free online QTK to CG4 converter — perfect for small batches with no installation needed!

How can I turn QTK files into CG4 on my computer?

The best way to change QTKs to CG4s 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 QTK to CG4.

How can I automate QTK to CG4 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 QTK files to CG4 using the command prompt?

reaConverter provides full access to all its features via Windows command line, including a high-performance command-line qtk to cg4 converter for batch processing.

What else can I do with reaConverter?

Convert Gerber images Crop images Convert DICOM images Resize photos Change file creation date