Why renaming .wmf to .emf could work? RRS feed

  • Question

  • Hi,

    I frequently use Mathtype with Word. I found that formulae I pasted into Word are actually stored as .wmf formats after changing .docx to .zip and unzip the file.

    However, if I rename any of the .wmf files to .emf, the content is equally viewable such as in MS paint, and the .emf file can be pasted directly into MS Word as a vector graphic.

    From http://en.wikipedia.org/wiki/Windows_Metafile .emf is 32-bit enhanced version of the 16-bit .wmf file. Is this the reason why the file can simply be renamed?


    Tuesday, February 21, 2012 4:19 AM


  • Hi,

    Please see following description, hope this helps.
    Link: http://support.microsoft.com/kb/320314

    WMF: Windows Metafile
    The Windows Metafile is a 16-bit metafile format that can contain both vector information and bitmap information. It is a Windows standard format.

    EMF: Enhanced Metafile
    The Enhanced Metafile format is a 32-bit format that can contain both vector information and bitmap information. This format is an improvement over the Windows Metafile Format and contains extended features, such as the following:

    • Built-in scaling information.
    • Built-in descriptions that are saved with the file.
    • Improvements in color palettes and device independence.

    The EMF format is an extensible format, which means that a programmer can modify the original specification to add functionality or to meet specific needs. This modification can lead to incompatibilities between different types of EMF pictures.

    Extensible file format.
    Improved features compared with WMF.

                                                                                                                                                                                                         Quote from Microsoft KB.

    You may also read this article: "[MS-WMF]: Windows Metafile Format"

    Best regards.

    William Zhou

    TechNet Community Support

    • Marked as answer by Bob Sun Thursday, February 23, 2012 3:52 PM
    Thursday, February 23, 2012 7:07 AM