Evince is the GNOME default PDF viewer. It's incredibly lightweight and allows the user to view multiple types of documents. With this simple viewer PDF, Postscript, djvu, tiff, dvi, XPS, SyncTex (support with gedit), and comics books (cbr,cbz,cb7 and cbt) can be viewed.
Image credit to Jack Wallen for TechRepublic.
Jack Wallen is an award-winning writer for TechRepublic and Linux.com. He’s an avid promoter of open source and the voice of The Android Expert. For more news about Jack Wallen, visit his website getjackd.net.