JBIG to FAX Converter

Transform JBIG files into FAX — instant and free

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Image Liberation

Free your document images from the JBIG format — FAX is supported by standard viewers and browsers.

Any Device Works

Access the JBIG to FAX converter from desktops, laptops, tablets, and phones — fully browser-based.

Data Protection

Your JBIG files are removed immediately after processing. Converted FAX output is purged within 24 hours.

How to convert JBIG to FAX

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

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

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

About formats

JBIG (Joint Bi-level Image experts Group) is a lossless image compression standard (ITU-T T.82) published in 1993, developed by a committee of experts drawn from the same international standards bodies that created JPEG. While the extension .jbig and .jbg refer to the same underlying compression standard, .jbig is the more explicit form commonly used in software that handles the raw JBIG-compressed datastream. The compression algorithm centers on context-dependent arithmetic coding: before encoding each pixel, the encoder examines a configurable template of 10 to 16 nearby pixels (a mix of neighbors from the current and previous lines) to determine a context — one of thousands of possible local pixel configurations. Each context maintains its own adaptive probability estimate that is continually updated as encoding proceeds, allowing the coder to exploit the statistical patterns unique to each image region. This approach handles text, line art, halftoned photographs, and mixed-content pages with a single algorithm, achieving consistently better compression than the fixed Huffman tables of Group 3 or the simpler prediction model of Group 4. A later revision, JBIG2 (T.88), added pattern matching and lossy modes for even higher compression, but the original JBIG remains widely deployed. One advantage is the algorithm's adaptiveness: unlike Group 3/4 codecs that use fixed statistical models, JBIG continuously learns the characteristics of each specific image as it encodes, providing near-optimal compression across widely varying content types. The standard is embedded in many multifunction printers and document scanners for internal image handling. JBIG files are processable by ImageMagick, jbigkit, and enterprise document imaging systems.

Developer: Joint Bi-level Image Experts Group

Initial release: 1993

FAX is a generic image file extension associated with facsimile transmission formats standardized by the ITU-T (formerly CCITT), with the underlying Group 3 compression standard ratified in 1980. FAX files typically contain monochrome (1-bit, black and white) image data compressed using the Modified Huffman (MH) encoding defined in ITU-T Recommendation T.4, which assigns variable-length codes to run lengths of consecutive white or black pixels along each scanline. The standard resolution for Group 3 fax is 204x98 dpi (normal mode) or 204x196 dpi (fine mode), reflecting the capabilities of thermal and laser fax machines of the era. FAX files encountered digitally are often raw Group 3 encoded bitstreams or TIFF wrappers with CCITT Group 3 compression (TIFF compression tag 3). The Group 3 encoding scheme is highly efficient for typical business documents — pages with mostly white space and black text — achieving compression ratios of 10:1 to 20:1 compared to uncompressed bitmaps. One advantage is universal fax system compatibility: Group 3 encoding is the mandatory baseline for all fax machines worldwide, meaning FAX files contain data in exactly the format transmitted over telephone lines, preserving the original fax data without transcoding losses. The format's role in business communications history provides another dimension — billions of fax transmissions using this encoding moved legal documents, medical records, and business correspondence for decades, and archived FAX files represent an important documentary record. FAX images can be viewed and converted using LibreOffice, ImageMagick, GIMP, and standard document management systems.

Developer: ITU-T

Initial release: 1980

Frequently Asked Questions

Why convert JBIG to FAX?

Some fax servers require FAX format specifically. Converting JBIG ensures files integrate with the target system.

What can open FAX format?

View FAX files with Windows Fax Viewer, IrfanView, or fax processing software — all handle this format natively.

Does converting JBIG degrade quality?

The FAX output faithfully reproduces all content from the JBIG source — quality is not compromised.

Can I use this converter at no cost?

Free for regular use. Premium plans unlock faster conversion speeds and larger batch processing limits.

Is multi-file JBIG conversion supported?

Yes, batch processing works. Upload as many JBIG files as needed and each becomes a separate FAX output.

How long does JBIG to FAX take?

Conversion usually completes in seconds. Cloud-based processing keeps everything fast regardless of your device.

Related Conversions

JBIG to JPG

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JBIG to BMP

JBIG to JPEG

JBIG to PDF

JBIG to DXF

JBIG to RTF

JBIG to JP2

JBIG to WBMP

JBIG to GIF

JBIG to TGA

JBIG to SVG

JBIG to PCX

JBIG to TIFF

JBIG to ICO

JBIG to CUR

JBIG to PBM

JBIG to PGM

JBIG to PPM

JBIG to WEBP

JBIG to EXR

JBIG to FAX

JBIG to FTS

JBIG to G3

JBIG to HDR

JBIG to HRZ

JBIG to IPL

JBIG to MAP

JBIG to MNG

JBIG to MTV

JBIG to OTB

JBIG to PAL

JBIG to PALM

JBIG to PAM

JBIG to PCD

JBIG to PCT

JBIG to PDB

JBIG to PFM

JBIG to PICON

JBIG to PICT

JBIG to PNM

JBIG to PSD

JBIG to RAS

JBIG to RGB

JBIG to RGBA

JBIG to RGBO

JBIG to SGI

JBIG to SUN

JBIG to UYVY

JBIG to VIFF

JBIG to XBM

JBIG to XPM

JBIG to XV

JBIG to XWD

JBIG to YUV

JBIG to JBG

JBIG to HEIC

JBIG to HEIF

JBIG to G4

JBIG to RGF

Specific converters

PDF to FAX

JPG to FAX

PNG to FAX

DOCX to FAX

JPEG to FAX

XLSX to FAX

BMP to FAX

DOC to FAX

TXT to FAX

TIFF to FAX

XLS to FAX

HTML to FAX

ODT to FAX

XPS to FAX

WEBP to FAX

RTF to FAX

PICON to FAX

BIN to FAX

CSV to FAX

CUR to FAX

GIF to FAX

JPS to FAX

ABW to FAX

DBK to FAX

KWD to FAX

SXW to FAX

AW to FAX

3FR to FAX

ARW to FAX

AVIF to FAX