The SVGZ file type is an SVG file that has been GZipped. The SVG file is a scalable vector graphics file, a proprietary format that is used only by Adobe.

SVG files contain the graphical information in an XML-format and allow for the most commonly used and needed graphic features including: transparency, gradients, and animations.

The SVGZ file is usually around half the size or smaller than the original SVG file.