Okular - The Universal Document Viewer

Okular - The Universal Document Viewer
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.
Illustration from
David Revoy CC-BY-SA-4.0
Latest News
Thursday, 16 April 2026
Okular 26.04 released
The 26.04 version of Okular has been released. This release includes several minor fixes and feature enhancements. You can check the full changelog at
Thursday, 11 December 2025
Okular 25.12 released
The 25.12 version of Okular has been released. This release includes several minor fixes and feature enhancements. You can check the full changelog at
Thursday, 14 August 2025
Okular 25.08 released
The 25.08 version of Okular has been released. This release includes several minor fixes and feature enhancements. You can check the full changelog at
Thursday, 12 December 2024
Okular 24.12 released
The 24.12 version of Okular has been released. This release includes several improvements in PDF form handling and Signature Creation as well as various other minor fixes and feature enhancements. You can check the full changelog at
📢 View all Development News
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.
See Format Compatibility table
Try Okular now!
Visit the download page.
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
Resource and Energy-Efficient Software
Okular is the very first software product to receive the Blue Angel ecolabel for being resource and energy efficient. Click on the label to find out more.