FAX to JBIG Converter

Convert FAX files to JBIG — instant online tool

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Server-Side Engine

All processing happens in the cloud. Your computer stays free while FAX converts to JBIG on our servers.

Fax Preservation

Preserve fax content by converting FAX to widely supported JBIG — future-proof your document archive.

Safe Conversion

Your FAX file is removed right after processing. The JBIG download is auto-deleted within 24 hours.

How to convert FAX to JBIG

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

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

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

About formats

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

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

Frequently Asked Questions

Why convert FAX to JBIG?

JBIG may offer better compression or compatibility with your fax infrastructure — converting ensures proper integration.

Which apps open JBIG files?

Open JBIG files using ImageMagick, IrfanView, or JBIG-compatible viewers.

Is the converted JBIG file high quality?

Document content stays crisp and readable. The converter maintains FAX image fidelity in the JBIG result.

Do I need to pay for this conversion?

No cost for standard FAX to JBIG conversions. Premium plans add faster processing and increased file limits.

Does this tool handle multiple files?

Yes — batch upload is supported. Drop multiple FAX files and each one converts to JBIG for separate download.

Do I need to create an account?

No registration is needed for standard conversions. Upload your FAX file, convert, and download the JBIG result.

Related Conversions

FAX to PDF

FAX to JPG

FAX to TIFF

FAX to JPEG

FAX to PNG

FAX to BMP

FAX to JP2

FAX to JIF

FAX to DXF

FAX to DOT

FAX to XPM

FAX to WBMP

FAX to GIF

FAX to TGA

FAX to SVG

FAX to PCX

FAX to ICO

FAX to CUR

FAX to PBM

FAX to PGM

FAX to PPM

FAX to WEBP

FAX to EXR

FAX to FTS

FAX to G3

FAX to HDR

FAX to HRZ

FAX to IPL

FAX to MAP

FAX to MNG

FAX to MTV

FAX to OTB

FAX to PAL

FAX to PALM

FAX to PAM

FAX to PCD

FAX to PCT

FAX to PDB

FAX to PFM

FAX to PICON

FAX to PICT

FAX to PNM

FAX to PSD

FAX to RAS

FAX to RGB

FAX to RGBA

FAX to RGBO

FAX to SGI

FAX to SUN

FAX to UYVY

FAX to VIFF

FAX to XBM

FAX to XV

FAX to XWD

FAX to YUV

FAX to JBG

FAX to JBIG

FAX to HEIC

FAX to HEIF

FAX to G4

Specific converters

JPG to JBIG

JPEG to JBIG

PNG to JBIG

WEBP to JBIG

PDF to JBIG

BMP to JBIG

JFIF to JBIG

TXT to JBIG

DOCX to JBIG

GIF to JBIG

PPTX to JBIG

NEF to JBIG

MOBI to JBIG

XLS to JBIG

TIFF to JBIG

PSD to JBIG

AVIF to JBIG

DOC to JBIG

JPE to JBIG

JBG to JBIG

ICO to JBIG

HTML to JBIG

HEIC to JBIG

ABW to JBIG

DBK to JBIG

KWD to JBIG

SXW to JBIG

AW to JBIG

3FR to JBIG

ARW to JBIG