Okular – The Universal Document Viewer

Okular – The Universal Document Viewer

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Okular – The Universal Document Viewer

Multi-platform, fast and packed with features, Okular allows you to read PDF documents, comics and EPub books, browse images, visualize Markdown documents, and much more.

Support for Many Formats

 

Okular supports many formats, including PDF, EPub, DjVU and MD for documents; JPEG, PNG, GIF, Tiff, WebP for images; CBR and CBZ for comics; and many, many more.

Advanced User Interface

Okular has a wide range of features that lets you easily manage your documents.

Annotate your PDFs

With Okular’s ‘Annotation mode’, you can easily add inline and popup notes, highlight and underline text, or even add your own text.

Select and View any Text

With Okular’s ‘Selection mode’, you can copy and paste almost anything from your documents to elsewhere. And, for those times the text you want to read is too small, you can use the ‘Magnifier mode’.

Your Content, at a Glance

Navigating your content is easier than ever. With Okular’s ‘Thumbnails panel’, you can browse graphically the part of the document you were looking for. With the ‘Content panel’, find the chapter you need in all supported documents.

First-class Signature Support

You can view and verify digital signatures embedded in PDFs, check if they are still valid, and detect any modifications since the moment the document was signed. You can even sign PDFs yourself!

Free Software

Okular is released under the GPLv2+, and is thus fully Free Software. Find the source code including guidance how to contribute in the Okular repository on KDE’s GitLab. Okular also fully respects your privacy, see all details in the KDE Software Privacy Policy.

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