User blog comment:Harbumz/Introducing Vignette, Wikia's New Thumbnailer/@comment-34115-20150212010632/@comment-34115-20150212053646

So you're actually using ImageMagic for SVGs.

The standard opinion in the MediaWiki community has been that ImageMagic is terrible at SVGs. Most installations I know of (including Wikimedia's) use an alternate svg renderer like rsvg or Inkscape. And support for this is baked into the core thumbnailer.

This support wasn't implemented in vignette?