Productivity & OfficeFree Open Source

Okular Document Viewer

Developer: KDE Community

Okular Document Viewer is a productivity & office application developed by KDE Community. It is available on Windows, Mac, Linux and is associated with .PDF, .EPUB, .CBR, .CBZ, .DJVU, .DVI workflows. For office files, open a copy first and check formulas, fonts, comments, external links, and tracked changes before saving. Preserve the original when converting between editable and fixed-layout formats. The listed edition is free, but confirm the publisher’s current requirements and license before installing it.

Supported Platforms:

windowsmaclinux

Core Capabilities

Opens or works with .PDF files in its productivity & office workflow

Available for Windows, Mac, Linux with the edition and license shown above

Supports related formats including .EPUB, .CBR, .CBZ

Use a copy of important files before saving or converting between formats

Published or maintained by KDE Community

Practical File Workflow

Use a copy of important files, confirm the format before editing, and verify the exported result before replacing the original.

How to Open Files using Okular Document Viewer

3 min

Install the official Okular Document Viewer release, open a copy of the .PDF file, confirm the file version and source, and associate the extension only after the first test succeeds.

Troubleshoot .PDF Files in Okular Document Viewer

4 min

Check the application version, required plugins or codecs, file permissions, and the file signature before attempting conversion or repair.

Supported File Extensions (7)

Click any file extension to view format specifications or step-by-step opening guides.

.PDFCompatible

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.EPUBCompatible

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.CBRCompatible

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.CBZCompatible

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.DJVUCompatible

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.DVICompatible

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.TIFFCompatible

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