WMF to SK Converter

WMF to SK — Sketch vector format, free online

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Open-Source Compatible

Convert WMF to SK — making your vector art editable in Skencil and other open-source Linux vector applications.

Server-Powered

All conversion processing occurs on Convertio cloud servers. Your local machine is never strained.

No Fuss Workflow

Upload your WMF, pick SK, and download — three simple steps with no technical knowledge required.

How to convert WMF to SK

1

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

2

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

3

Let the file convert and you can download your sk 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
SK is the native file format of Skencil (originally named Sketch), a free vector graphics editor for Linux created by Bernhard Herzog, with the first public release on October 31, 1998. Skencil holds historical significance as one of the earliest full-featured vector drawing applications written almost entirely in Python, with only performance-critical rendering components implemented in C. The SK file format uses a text-based, Python-like syntax to describe document structure — pages, layers, groups, and individual graphic objects are represented as nested statements with parameters specifying coordinates, colors, line styles, and transformations. The format supports Bezier curves, rectangles, ellipses, text objects with font specifications, imported raster images, gradient and pattern fills, and hierarchical grouping with affine transforms. One advantage is human readability — SK files can be opened in any text editor, making it possible to inspect, modify, or generate artwork programmatically using simple scripts. The Python-native structure also provides a benefit for automation: since Skencil itself is a Python application, the file format integrates naturally with scripting workflows for batch processing and procedural graphic generation. While Skencil's development slowed after the mid-2000s, its SK format became the foundation for the sK1 project, which extended the format and continued active open-source vector graphics development. SK files remain convertible through sK1, UniConvertor, and other open-source tools.
Developer: Bernhard Herzog
Initial release: October 31, 1998

Frequently Asked Questions

Why convert WMF to SK?

SK is the native format for Skencil (formerly Sketch), an open-source vector editor on Linux. Converting from WMF enables editing in this tool.

What opens SK files?

Skencil (Sketch) is the primary editor for SK files. Some vector converters and Linux graphics tools also handle the format.

Does WMF to SK preserve vector paths?

Yes — vector geometry from WMF is translated into SK format, preserving shapes, lines, and overall structure.

Is the conversion free?

Standard WMF to SK conversion is free. Premium tiers offer expanded processing limits for demanding users.

Can I do this on any operating system?

Yes — Convertio is browser-based and works on Windows, macOS, Linux, and mobile equally well.

How fast is this conversion?

Most WMF to SK conversions complete within seconds thanks to Convertio cloud infrastructure.