There is an installer package specifically for jessie Debian to install the Microsoft Core Web Fonts. These fonts are licensed under a semi-free license (basically free use and distribution as long as distribution is non-commercial). Since we aren't actually redistributing them, that shouldn't be an issue. The package includes several of the most common fonts used on the web, which should improve the rendering of the SVGs that use these fonts:
- Andale Mono
- Arial Black
- Arial (Bold, Italic, Bold Italic)
- Comic Sans MS (Bold)
- Courier New (Bold, Italic, Bold Italic)
- Georgia (Bold, Italic, Bold Italic)
- Impact
- Times New Roman (Bold, Italic, Bold Italic)
- Trebuchet (Bold, Italic, Bold Italic)
- Verdana (Bold, Italic, Bold Italic)
- Webdings
They should also be added to the [[ https://noc.wikimedia.org/conf/fc-list | fc-list ]].
The installer can be found at https://packages.debian.org/search?keywords=ttf-mscorefonts-installer.