JBG to XV Converter

Transform JBG images to XV — quick and free

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Works Everywhere

Convert JBG to XV from any device — Windows, macOS, Linux, or mobile. All you need is a web browser.

File Safety First

All uploaded JBG data is deleted post-conversion. XV files are cleaned from servers within 24 hours.

Scan Conversion

Transform JBG bi-level scans into widely supported XV format — viewable on virtually any device.

How to convert JBG to XV

1

Select files from Computer, Google Drive, Dropbox, URL or by dragging it on the page.

2

Choose xv or any other format you need as a result (more than 200 formats supported)

3

Let the file convert and you can download your xv file right afterwards

About formats

JBG is a file extension for images compressed using the JBIG (Joint Bi-level Image experts Group) standard, formally ITU-T Recommendation T.82, completed in 1993 as a successor to the Group 3 and Group 4 fax compression standards. JBIG compression is designed for bi-level (black and white) images but can also handle grayscale and limited-color images by encoding each bit plane separately. The algorithm uses a form of arithmetic coding guided by an adaptive context model: for each pixel, the encoder examines a template of surrounding already-coded pixels to build a probability estimate, then feeds this estimate to a QM-coder (a variant of the Q-coder arithmetic coder) that produces a highly efficient binary output. JBIG achieves 20-40% better compression than Group 4 on typical document images, with the improvement being even larger on halftoned photographs and images with gradual density transitions where Group 4's simple run-length approach is less effective. The standard supports progressive encoding, where a low-resolution version of the image is transmitted first and progressively refined — useful for fax-like applications where the receiver can begin displaying the image before the full-resolution data arrives. One advantage is superior compression of documents containing halftone images: newspapers, magazines, and marketing materials that mix text with photographic halftones compress dramatically better with JBIG than with Group 3/4. The standard's ITU-T backing ensures it is implemented in document imaging hardware and software worldwide. JBG files are supported by ImageMagick and various document imaging tools.
Initial release: 1993
XV is an alternate file extension for the VIFF (Visualization Image File Format) developed by Khoral Research as part of the Khoros scientific image processing environment, which originated at the University of New Mexico around 1990. The .xv extension and the .viff extension refer to the same underlying format — a container with a 1024-byte header encoding image dimensions, data type (from single-bit to double-precision float and complex numbers), color space, band count, and optional spatial location metadata, followed by color map data and pixel values. The XV extension became common on systems where Khoros was installed alongside other X Window System tools, and in some research communities .xv was preferred over .viff as a shorter alternative. Khoros itself was a pioneering visual programming system where scientists assembled image processing pipelines by wiring together processing nodes in a graphical canvas — an approach that predated and influenced similar environments in MATLAB, LabVIEW, and commercial remote sensing packages. One advantage of the VIFF/XV format is its ability to store data at scientific precision levels — floating-point and complex number pixel values preserve measurement accuracy that would be lost in photographic formats limited to 8-bit or 16-bit integers, making it valuable for spectral analysis, computational physics output, and satellite imagery. The multi-band architecture provides another strength, allowing a single file to hold dozens of spectral channels from multispectral or hyperspectral sensors without splitting data across multiple files. XV files are supported by ImageMagick and can be converted to modern image formats for visualization or publication.
Developer: Khoral Research
Initial release: 1990

Frequently Asked Questions

Why convert JBG to XV?

JBG files require specialized viewers. XV conversion makes the content accessible to standard applications.

What software opens XV?

Use XV image viewer, ImageMagick, or Khoros tools to view XV files.

Is any detail lost during conversion?

JBG files are typically monochrome scans. The converter maintains full resolution and sharpness in XV output.

Does the JBG to XV converter cost anything?

The converter is free for standard use. Premium plans offer expanded limits and priority queue access.

Can I batch convert JBG to XV?

Upload multiple JBG files together — the converter processes each one and delivers separate XV outputs.

Is my data secure during conversion?

Uploaded JBG files are deleted immediately after conversion. XV results are automatically removed within 24 hours.