SVG file

From TrillWiki

SVG stands for Scalable Vector Graphics, a graphics format defined by the World Wide Web Consortium (W3C), the same group that gave us the XML and PNG image specifications. (The file format is in fact based on XML.)

The difference between a vector graphic and a bitmap graphic is that vector graphics keep the information for the image as equations rather than as pixels. This means that the graphic can in theory be scaled as much as you want without loss of quality.

Trillian doesn't support this format yet, but a few people have requested it for future versions.