okular:tldr:0814b

Okular is a free and open-source document viewer for KDE desktop environments. It is designed primarily for viewing documents such as PDFs, but it also supports other file formats such as eBooks (ePub, Mobipocket), comic book archives (CBR, CBZ, etc.), and more.

When you run the "okular" command in a terminal or from the application launcher, it launches the Okular document viewer. This allows you to open and view various documents on your computer.

Here are some common uses and features of Okular:

1. Opening a document: You can open a document by clicking on "File" in the menu bar and selecting "Open" or by using the keyboard shortcut Ctrl+O. Then, navigate to the location of the document and select it to open it in Okular.

2. Viewing documents: Okular provides various viewing options such as continuous scrolling, single page, facing pages, and more. You can adjust the zoom level, navigate between pages using the navigation toolbar or keyboard shortcuts, and rotate the document if necessary.

3. Annotations and highlighting: Okular allows you to add annotations, highlight text, underline, strike-through, and add bookmarks to your documents. You can access these options from the toolbar or right-click menu.

4. Table of contents and bookmarks: Many documents such as PDFs come with a table of contents. Okular displays this table of contents on the left side, allowing you to quickly navigate to different sections of the document. You can also add bookmarks to specific pages for easier access.

5. Searching within documents: Okular provides a search functionality that allows you to search for specific words or phrases within the document. Just click on the search icon in the toolbar, enter your search term, and Okular will highlight the matching results.

6. Full-screen mode and presentation mode: Okular supports full-screen mode for distraction-free reading. It also includes a presentation mode with various options, allowing you to present your documents as slides.

Overall, Okular is a versatile document viewer with features for viewing and interacting with different types of documents.