WMZ to JBIG Converter

Online WMZ to JBIG — instant image conversion

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Works on Any Device

No platform restrictions. Desktop, laptop, tablet, or phone — Convertio handles WMZ to JBIG conversion everywhere.

Cloud-Powered Processing

Conversion runs on Convertio servers — your device handles only the upload and download. No CPU or RAM impact locally.

Format Flexibility

WMZ converts to over a hundred output formats on Convertio — JBIG is just one of many available options.

How to convert WMZ to JBIG

1

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

2

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

3

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

About formats

WMZ is a compressed variant of the Windows Metafile (WMF) format, introduced by Microsoft with Office 2000 in 1999. A WMZ file is simply a WMF file compressed using the gzip algorithm (RFC 1952), reducing the file size for more efficient storage and embedding within Office documents, web pages, and other containers. The underlying WMF format stores vector graphics as a sequence of GDI (Graphics Device Interface) function calls — commands that draw lines, curves, polygons, text, and bitmaps — recorded in a device-independent format that can be replayed at any resolution. WMZ preserves this vector nature: when decompressed, the file produces a standard WMF that renders through the Windows GDI subsystem using the same drawing primitives as on-screen display, ensuring visual fidelity across different output devices and resolutions. WMZ files are commonly found embedded in Microsoft Office documents (Word, Excel, PowerPoint), HTML email messages generated by Outlook, and web content produced by Office's Save as Web Page feature. The format is also used for clip art and template graphics distributed with Office installations. One advantage is space efficiency: gzip compression typically reduces WMF file sizes by 60-80%, meaningful when many small graphics are embedded in a single document or web page. The format's deep integration with the Microsoft Office ecosystem is another practical strength — WMZ graphics render natively in all Office applications without additional software, and can be extracted, decompressed, and converted using tools like LibreOffice, ImageMagick, Inkscape, and standard gzip utilities.
Developer: Microsoft
Initial release: 1999
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.
Initial release: 1993

Frequently Asked Questions

Why convert WMZ to JBIG?

Converting WMZ to JBIG lets you extract vector graphics from Office documents into standard image formats — JBIG is widely recognized and easy to share.

How do I open JBIG files?

JBIG files open in JBIG viewers, fax systems — widely supported across Windows, macOS, and Linux platforms.

What platforms support this conversion?

No platform restrictions — if your device has a browser, you can convert WMZ to JBIG on Convertio.

Can I convert multiple WMZ files at once?

Multiple WMZ files can be queued for conversion at the same time — each produces a separate JBIG file.

Do I need to install anything?

Nothing to install. The converter operates entirely online in your browser — no plugins, extensions, or software.

What quality can I expect from JBIG output?

Expect solid results — JBIG delivers bi-level compression for scanned documents, and the converter maximizes output fidelity.