wmf2svg: Fast and Accurate WMF-to-SVG Conversion Tools Compared

If a package isn’t available, build from source:

Code
 ffON2NH02oMAcqyoh2UU MQCbz04ET5EljRmK3YpQ CPXAhl7VTkj2dHDyAYAf” data-copycode=“true” role=“button” aria-label=“Copy Code”>Copy CodeCopied
git clone https://example.org/wmf2svg.git
cd wmf2svg mkdir build && cd build cmake .. make sudo make install 

Basic usage

Convert a single WMF/EMF file to SVG:

Code
Copy CodeCopied
wmf2svg input.wmf -o output.svg 

Common flags:

• -o, –output — specify output filename
• -q, –quiet — suppress non-error messages
• -v, –verbose — show detailed processing info
• –dpi — rendering DPI for EMF raster elements (default 96)

Batch conversion

Convert all WMF/EMF files in a folder:

Code
Copy CodeCopied
for f in.wmf; do   wmf2svg “\(f" -o "\){f%.wmf}.svg” done 

On Windows (PowerShell):

Code
Copy CodeCopied
Get-ChildItem *.wmf | ForEach-Object { wmf2svg \(_.FullName -o (\)_.BaseName + “.svg”) } 

Preserving text and fonts

wmf2svg attempts to keep text as text objects. To improve results:

• Install common Windows fonts on your system or provide font substitution via settings (if supported).
• If text becomes paths, try increasing DPI or using a different renderer.

Handling unsupported features

Some WMF/EMF features may rasterize or be approximated:

• Complex gradients, certain brushes, or advanced GDI features may become embedded images.
• Use –dpi to control raster quality for embedded bitmaps.
• Post-process SVG in a vector editor to clean artifacts.

Optimizing output SVG

• Run SVGO or similar tools:

  Code
  Copy CodeCopied
  svgo output.svg -o output.min.svg 

• Remove unused metadata and simplify paths with Inkscape’s “Simplify” or automated tools.

Troubleshooting

• Blank output: check input file validity (file input.wmf) and run with -v for errors.
• Wrong fonts: install matching fonts or convert text to paths in a controlled step.
• Large file size: optimize images or simplify paths; use svgo.

Example workflow

1. Convert:

   Code
   Copy CodeCopied
   wmf2svg diagram.wmf -o diagram.svg 

2. Open in Inkscape, correct font/substitutions.
3. Optimize:

   Code
   Copy CodeCopied
   svgo diagram.svg -o diagram.optimized.svg 

Alternatives

• Inkscape (GUI/CLI) can import WMF and export SVG.
• Online converters for occasional use.
• Libraries like LibreOffice draw for batch processing via scripting.

Conclusion

wmf2svg provides a lightweight, scriptable path from legacy WMF/EMF assets to modern SVG. Use font provisioning and post-processing to get the cleanest, most editable SVGs for web or print workflows.