Okular is a document viewer and it replaced KPDF,KGhostView,KFax,KFaxView and KDVI in KDE4 .Its functionaltiy can be easily embedded in other applications.Okular was started for Google Summer of Code,2005.

In this season,the Okular toolbar mockup was created based on an analysis of other popular document viewers and a usage survey.

Okular has additional features, including commenting on PDF documents,highlighting and drawing lines,geometric shapes,adding textboxes and stamps.You can extract the text to a text file.You can select parts to save them or copy as text or image to the clipboard.You can trim white page borders and set bookmarks.

It supports the following file formats also,

  • Portable Document Format(PDF),
  • Tagged Image File Format(TIFF),
  • Device Independent File Format(DVI),
  • XML Paper Specification(XPS),
  • Open Document Format(ODF),
  • Mobipocket and
  • Various image formats.



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