An SVGZ file is a Scalable Vector Graphics (.SVG) file compressed with gzip compression. It contains graphics data in an XML format and supports graphical elements including transparency, gradients, animations, and filters.
Portable Document Format (PDF) is a type of document created by Adobe back in 1990s. The purpose of this file format was to introduce a standard for representation of documents and other reference material in a format that is independent of application software, hardware as well as Operating System. PDF files can be opened in Adobe Acrobat Reader/Writer as well in most modern browsers like Chrome, Safari, Firefox via extensions/plug-ins