Advanced Features

Embedded Files
If the current document has some files embedded in it, when you open it a yellow bar will appear above the page view to notify you about the embedded files.
The embedded files bar
The embedded files bar
In this case, you can either click on the link in the text of the bar or choose File Embedded Files to open the embedded files dialog. The dialog allows you to view the embedded files and to extract them.

Forms
If the current document has forms, when you open it a bar will appear above the page view where you can enable the forms.
The forms bar
The forms bar
In this case, you can either click on Show Forms in the bar or choose View Show Forms to enter data into the form fields.

Annotations
allows you to review and annotate your documents.
's Annotations
's Annotations
has two different kind of annotations:
Text annotations like Yellow Highlighter and Black Underlining for files with text like ⪚ .
Graphic annotations like Pop-up Note, Inline Note, Freehand Line, Highlighter, Straight Line, Polygon, Stamp, Underline, and Ellipse for all formats supported by .
Using the context menu either in the Reviews view of the navigation panel or in the main window you can open a Pop up Note for any kind of annotation and add or edit comments.
Annotations are not only limited to files, they can be used for any format supports.
has the "document archiving" feature. This is an -specific format for carrying the document plus various metadata related to it (currently only annotations). You can save a "document archive" from the open document by choosing File Save As and selecting Okular document archive in the Filter selector. To open an document archive, just open it with as it would be ⪚ a document.
You can also save annotations directly into files. You can use File Save to save it over the current file or File Save As... to save it to a new file.
Due to DRM limitations (typically with documents), adding, editing some properties or removing annotations could not be possible.
Any action on annotations (creation and removal of annotations, editing arbitrary annotation properties, relocating annotations with +drag, and editing the text contents of an annotation) can be undone or redone using the corresponding item from the Edit menu. It is also possible to undo the action by pressing Z and redo the undone action by pressing Z.
You can configure the default properties and appearance of each annotating tool. Please refer to the corresponding section in this documentation.

Adding annotations
To add some annotations to the document, you have to activate the annotating toolbar. This is done by either selecting Tools Review or pressing F6. Once the annotating toolbar is shown, just press one of its buttons or use keyboard shortcuts (keys from 1 to 9) to start constructing that annotation.
The annotating toolbar helps you to make annotations with drawings, shapes, and text messages. You can use the annotating toolbar to mark up a document (⪚ add lines, ellipses, polygons, stamps, highlights, underlines ). The table below describes exactly what the default set of annotating toolbar buttons does.
Button	Tool Name	Description
	Pop-up Note	To draw multiline note. The note will can be viewed by double clicking on an icon in the document. Click on the tool button, then click on the place in the document where the pop-up note should be added. Enter the text of pop-up note then click on the Close this note button in the top right corner of the pop-up window.
	Inline Note	To draw inline note. The note will be shown inline as is. Click on the tool button, then click with the and hold to place the top-left corner of the note, then drag to place the bottom-right one. Enter the text of the note then click on the OK to save the note, Cancel to cancel note entering or Clear to clear the note.
	Freehand Line	To draw free-form lines. Click on the tool button, then click with the and hold to place the start of the line, then drag to draw the line.
	Highlighter	To highlight text in the document with some given background color. Click on the tool button, then click with the and hold to place the beginning of the highlighted text snippet, then drag to highlight it.
	Straight Line	To mark with a line. Click on the tool button, then click with the to place the starting point of the line, then drag to place of the ending point of the line should be and click once more.
	Polygon	To draw a closed plane figure from three or more segments. The corresponding note can be viewed by double clicking inside the polygon. Click on the tool button, then click with the to place the first vertex of the polygon, then drag to place of the second vertex. Proceed until you draw the whole polygon up to the first vertex. Click twice if you want to add some note to the polygon. Enter the text of the note then click on the OK to save the note, Cancel to cancel note entering or Clear to clear the note.
	Stamp	To mark the text or image with some predefined shape. Click on the tool button then click with the to place the stamp. A single click just places a square stamp (useful for icons). To add a rectangular stamp you can click with the and hold to place the top-left point, then drag to place the bottom-right one.
	Underline	To underline some text. Click on the tool button, then click with the and hold to place the beginning of the underlined text snippet, then drag to underline it.
	Ellipse	To draw an ellipse around some chosen area. Click on the tool button, then click with the and hold to place the top-left corner of the circumscribed rectangular for the ellipse, then drag to place the bottom-right one.
The contents of the annotating toolbar can be configured using the Annotations page of configuration dialog. This page can be opened with clicking on the annotating toolbar then choosing Configure Annotations... from the context menu.
With a single click on an annotation tool button you can use a tool once. If you ⪚ want to highlight all important parts of a text, activate that tool permanently by double clicking on the tool button. Press the Esc key or click the tool button again to leave the permanent mode.
The annotating toolbar can be docked in any side of the viewing area: just drag it to move it to another place.
Activating the annotating toolbar will make you switch to the Browse Tool Mode.
You can stop the construction any time by pressing again on the button of the annotation you are constructing, or by pressing the key.
The newly constructed annotation will have as author the author you set in the Annotations page in s configuration dialog. The Annotations page can also be used to configure the content of the annotating toolbar.

Removing annotations
To remove an annotation, just click on it with the , and select Delete or select an annotation using the and press the ∇ key.
When removing the annotation, its window will be closed if open.
This option could not be enabled because the document does not allow removing annotations.

Editing annotations
To edit an annotation, click on it with the and select Properties. A dialog will appear with the general annotation settings (like color and opacity, author, ) and the settings specific to that annotation type.
Annotation Property Dialog
Annotation Property Dialog
To move an annotation, hold down the key, move the mouse pointer on it and then start dragging with the .
If you click with the on an annotation, it gets selected. Resize handles appear on the selection rectangle. When the cursor is moved over one of the 8 resize handles on the corners or edges, the cursor shape changes to indicate the resize mode. Click anywhere else on the annotation to move it. Pressing or clicking an area outside the annotation cancels a selection.
Resizing is only applicable for annotation types Inline Note, Stamp and Ellipse.
Depending on the document permissions (typically with documents), some options can be disabled.

Bookmark Management
has a very flexible bookmark system. saves the position on the page in bookmark and allows you to define more than one bookmark per page.
To manage bookmarks in you can use Bookmarks view from Navigation Panel, Bookmarks menu or context menu of document view (click with to open it).

Bookmarks view
To open Bookmarks view click on Bookmarks item on the Navigation Panel. If the Navigation Panel is not shown, use F7 Settings Show Navigation Panel main menu item to make it visible.
Bookmark view context menu
Bookmark view context menu
The filter bar at the top of Bookmarks view can be used to filter the content of bookmark list pane according to the text in the box.
The list pane permits to view the bookmark list in a tree-like fashion: each document in the list can be expanded or collapsed by clicking on the < or v icon next to it.
Click on icon below the list to show only the bookmarks from the current document.
Right-click menu of document item can be used to open document, rename its item or remove it from the list. Remember that the removal of a document item leads to the removal of all bookmarks in the corresponding document.
Right-click menus of individual bookmark items allow you to go to the bookmark, rename or remove it.
The Right-click menu of items in the table of contents can be used to create bookmarks or go to the next or previous bookmark.

Command Line Options
Though may most often be started from the program menu, or a desktop icon, it can also be opened at the command line prompt of a terminal window. There are a few useful options that are available when doing this.

Specify a File
By specifying the path and name of a particular file the user can have open that file immediately upon startup. This option might look something like the following:

% okular /home/myhome/docs/mydoc.pdf

For documents, the name can be given as document_name#named_destination where named_destination is a particular named destination embedded in the document.

Other Command Line Options
The following command line help options are available
okular -p --page number 	Open a page with a given number in the document. Also available through okular -p number
okular --presentation 	Start the document in presentation mode.
okular --print 	Start with print dialog.
okular --unique 	Unique instance control.
okular --noraise 	Allows to prevent window raising after the start.

Fit window to page
The Fit window to page feature resizes the window so that it is exactly the same size as the page at the current zoom factor. If the page doesn't completely fit on the screen, the window is enlarged so that the largest possible part of the page is shown.
This feature can be accessed by using the keyboard shortcut J