Vertopal
Tools
CONVERTERS
Upload to Clouds
Drop Files Anywhere to Upload

Convert J2K to G4

Convert J2K images to G4 format, edit and optimize images online and free.

Convert J2K to G4
Loading Uploader...
if you have uploaded a file, it will be displayed.
Confirm Cancel

JPEG 2000 Code Stream Syntax (.j2k)

The J2K file extension stands for JPEG 2000 Code Stream Syntax, a part of the JPEG 2000 standard developed by the Joint Photographic Experts Group (JPEG). Introduced in 2000, JPEG 2000 offers superior image compression and quality compared to the original JPEG format. The J2K codestream is highly flexible, supporting both lossy and lossless compression, and allows for scalable decoding, which means images can be efficiently accessed at various resolutions and quality levels. This makes J2K ideal for applications requiring high-quality image storage and transmission, such as medical imaging, digital cinema, and satellite imagery.

J2K Converter

CCITT Group 4 Fax Image (.g4)

The G4 file extension is linked to the CCITT Group 4 Fax Image format, recognized by the International Telecommunication Union (ITU) for its ability to compress monochrome images without data loss. This format is integral to fax technology, employing a two-dimensional coding system that identifies image patterns, resulting in high compression ratios and minimized file sizes, key for efficient document transmission.

G4 Converter More About G4

How to convert J2K to G4?

  1. Upload J2K File

    Choose any J2K image from your computer, or drag & drop a J2K file onto this page.

  2. Select J2K Tools

    Check the file preview quickly and use J2K to G4 tools if you need to change the conversion settings.

  3. Download Your G4

    After the convert is complete, click on the Download button to get your G4 image.

Convert J2K to G4

Frequently Asked Questions

How to change J2K format to G4?

To change J2K format to G4, upload your J2K file to proceed to the preview page. Use any available tools if you want to edit and manipulate your J2K file. Click on the convert button and wait for the convert to complete. Download the converted G4 file afterward.

Convert Files on Desktop

macOS
Windows
Linux

Convert J2K to G4 on macOS

Follow steps below if you have installed Vertopal CLI on your macOS system.

  1. Open macOS Terminal.
  2. Either cd to J2K file location or include path to your input file.
  3. Paste and execute the command below, substituting in your J2K_INPUT_FILE name or path. $ vertopal convert J2K_INPUT_FILE --to g4

Convert J2K to G4 on Windows

Follow steps below if you have installed Vertopal CLI on your Windows system.

  1. Open Command Prompt or Windows PowerShell.
  2. Either cd to J2K file location or include path to your input file.
  3. Paste and execute the command below, substituting in your J2K_INPUT_FILE name or path. $ vertopal convert J2K_INPUT_FILE --to g4

Convert J2K to G4 on Linux

Follow steps below if you have installed Vertopal CLI on your Linux system.

  1. Open Linux Terminal.
  2. Either cd to J2K file location or include path to your input file.
  3. Paste and execute the command below, substituting in your J2K_INPUT_FILE name or path. $ vertopal convert J2K_INPUT_FILE --to g4

Loading, Please Wait...