Convert JPG to JBG

Understanding JPG and JBG file formats

JPG (or JPEG) is a widely used raster image format known for its efficient lossy compression, making it ideal for photographs and web images. JBG (Joint Bi-level Image Experts Group), also known as JBIG, is a format designed for lossless compression of bi-level (black and white) images, commonly used in fax transmissions and document imaging.

Why convert JPG to JBG?

Converting a JPG to JBG is useful when you need to store or transmit black and white images with high compression efficiency and without quality loss, such as scanned documents or faxes.

How to convert JPG to JBG

Since JBG is intended for bi-level images, you should first convert your JPG to black and white (1-bit) before saving as JBG. Here’s how you can do it:

Using XnConvert (Windows, macOS, Linux)

1. Download and install XnConvert from the official website.
2. Open XnConvert and add your JPG file.
3. Go to the Actions tab and add the Convert to Black & White action.
4. Switch to the Output tab, set the format to JBIG (*.jbg).
5. Click Convert to start the conversion.

Using IrfanView (Windows)

1. Install IrfanView and the IrfanView Plugins pack.
2. Open your JPG file in IrfanView.
3. Go to Image → Convert to Greyscale and then Image → Decrease Color Depth to 2 colors (black/white).
4. Go to File → Save As and select JBIG (*.jbg) as the output format.

Best software for JPG to JBG conversion

• XnConvert – Free, cross-platform, batch conversion, supports JBG export.
• IrfanView – Free for non-commercial use, requires plugins for JBG support.
• ImageMagick – Command-line tool, supports advanced batch processing and scripting.

Tips for successful conversion

• Ensure your JPG is suitable for bi-level conversion; JBG is best for black and white images.
• Preview the black and white result before saving to JBG to avoid loss of important details.
• For batch conversions, XnConvert and ImageMagick are highly recommended.