WMF to CGM Converter

Convert WMF to CGM — ISO standard vectors, free

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Standards-Compliant Output

Move from proprietary WMF to CGM — an ISO-standardized vector format for technical illustrations and documentation.

Secure Conversion

Your WMF uploads are deleted after processing. CGM output files are automatically removed within 24 hours.

Browser-Based Tool

No desktop software required. Convert WMF to CGM from Chrome, Firefox, Safari, or Edge on any platform.

How to convert WMF to CGM

1

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

2

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

3

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

About formats

WMF (Windows Metafile) is a vector graphics format created by Microsoft, introduced with Windows 3.0 in May 1990 as the platform's native format for recording and replaying graphical operations. A WMF file captures a sequence of GDI (Graphics Device Interface) drawing commands — lines, rectangles, ellipses, polygons, text, and bitmap blits — in the order they were issued, serializing screen or printer output into a replayable file. The format uses a 16-bit coordinate space and organizes records as a linear stream of function calls with their parameters, preceded by a header specifying the bounding rectangle and resolution. WMF became deeply integrated into the Windows ecosystem as the default format for clip art collections, Office document graphics, and clipboard vector interchange during the 1990s — Microsoft Office shipped with thousands of WMF clip art images that defined a visual era of desktop publishing. One advantage is pervasive compatibility: virtually every Windows application from the past three decades can render WMF content, making it one of the most widely supported vector formats in existence. The lightweight recording model is another strength — WMF files are compact and render quickly because they replay native system drawing calls rather than interpreting a complex graphics language. While 16-bit limitations and lack of transparency and Bezier curves led Microsoft to develop EMF as a 32-bit replacement, WMF files remain ubiquitous in legacy documents and across current Windows software.
Developer: Microsoft
Initial release: May 22, 1990
CGM (Computer Graphics Metafile) is a vector graphics standard defined by ISO 8632, first published in 1987 and developed through the ISO/IEC JTC 1/SC 24 committee. The standard defines a device-independent format for storing and transferring two-dimensional vector graphics, raster images, and text. CGM supports three encoding methods: character encoding (compact text representation), binary encoding (efficient machine-readable form), and clear-text encoding (human-readable for debugging). The format describes graphical primitives including polylines, polygons, ellipses, circular arcs, splines, and text with associated attributes for color, line style, fill patterns, and clipping boundaries. CGM found its strongest adoption in technical documentation, particularly in aerospace, defense, and industrial sectors where long-term archival and precise technical illustration are critical. One advantage is formal standardization — as an ISO standard, CGM provides vendor-neutral, specification-driven interoperability guaranteed across compliant implementations. The format's adoption in specialized industries is another practical strength: WebCGM, a W3C profile of CGM, became the mandated illustration format for interactive electronic technical manuals in the aerospace industry (ATA iSpec 2200), ensuring CGM's continued relevance in aviation maintenance documentation. While general-purpose vector work has moved to SVG and PDF, CGM persists in regulated industries where certified, standards-based graphics interchange is mandatory.
Initial release: 1987

Frequently Asked Questions

Why convert WMF to CGM?

CGM is an ISO-standardized vector format used in technical documentation and defense industries. It provides broader platform support than WMF.

What software reads CGM files?

CGM files open in technical illustration tools like Corel Designer, Adobe FrameMaker, and specialized CGM viewers used in aviation and defense.

Is the vector structure maintained?

Yes — Convertio translates WMF vector elements into CGM primitives, maintaining geometric accuracy and structure.

Is this conversion available for free?

Yes. Convertio provides free WMF to CGM conversion. Paid plans add increased throughput and larger file support.

Does this require any installation?

None at all. The converter runs entirely in your browser — no plugins, no software downloads required.

Can I convert many WMF files to CGM at once?

Batch upload is supported. Add all your WMF files and Convertio processes them to CGM together.

WMF to CGM Quality Rating

5.0 (3 votes)
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