Last modified: 2014-02-28 20:09:09 UTC
If a file is only black text with a transparent background, like an .svg format, the file won't show up in media viewer. Ref: https://en.wikipedia.org/w/index.php?title=User:Keegan&oldid=411320607#mediaviewer/File:Support Free Knowledge (bn).svg
Let's wrap that: <https://en.wikipedia.org/w/index.php?title=User:Keegan&oldid=411320607#mediaviewer/File:Support_Free_Knowledge_(bn).svg>
*** This bug has been marked as a duplicate of bug 57620 ***