What is the primary file extension for vector graphics?

The primary file extension for vector graphics is .svg. SVG stands for Scalable Vector Graphics, which is a widely used format for creating two-dimensional graphics that are defined in XML. The defining characteristic of vector graphics is that they are based on mathematical expressions, which allows them to be scaled infinitely without losing quality. This makes SVG an ideal format for logos, icons, and other graphics that require sharpness at various sizes.

In contrast, .jpeg, .pdf, and .bmp are primarily associated with raster graphics. JPEG is a commonly used format for photographic images, but it is raster-based, meaning images can lose clarity when resized. PDF can contain both raster and vector graphics, but it is not specifically designated as a vector graphics file extension. BMP is a bitmap image format which also falls under raster graphics, displaying images as pixels rather than using geometric forms. Therefore, .svg stands out as the most appropriate choice for representing vector graphics.