Configuring

General Options
Save clipboard contents on exit 	If this option is on, the clipboard history will be saved when exits, allowing you to use it next time starts.
Prevent empty clipboard 	If selected, the clipboard will never be empty: will insert the most recent item from the clipboard history into the clipboard instead of allowing it to be empty.
Ignore images 	When an area of the screen is selected with mouse or keyboard, this is called the selection. If this option is selected, only text selections are stored in the history, while images and other selections are not.
Ignore selection 	Sets the clipboard mode. This option will prevent from including the contents of the selection in its clipboard history and from performing actions on the contents of the selection. See Clipboard/Selection Behavior.
Text selection only 	When an area of the screen is selected with mouse or keyboard, this is called the selection. If this option is selected, only text selections are stored in the history, while images and other selections are not. See Clipboard/Selection Behavior.
Synchronize contents of the clipboard and the selection 	Sets the clipboard mode. When an area of the screen is selected with mouse or keyboard, this is called the selection. If this option is selected, the selection and the clipboard is kept the same, so that anything in the selection is immediately available for pasting elsewhere using any method, including the traditional middle mouse button. Otherwise, the selection is recorded in the clipboard history, but the selection can only be pasted using the middle mouse button. Also see the Ignore selection option. See Clipboard/Selection Behavior.
Timeout for action popups 	Set the time that a popup menu will remain for if you do nothing with it.
Clipboard history size 	Sets the number of items that are stored in the clipboard history.

Actions Options
Replay actions on an item selected from history 	If this is switched on, selecting an item from the history causes to display the actions pop-up on that item, if appropriate.
Remove white space when executing actions 	If selected, any white space (spaces, tabs, ) at the beginning and end of the clipboard contents will be removed before passing the clipboard contents to an application. This is useful, for example, if the clipboard contains a with spaces which, if opened by a web browser, would cause an error.
Enable MIME-based actions 	If selected, in addition to the actions you defined a list of applications for the detected MIME type will appear in the popup menu.
Editing Expressions/Actions 	On the Actions page, double-click the regular expression or action that you want to edit or select it and press the Edit Action button. A dialog will appear in which the expression text can be edited as you wish.
Adding Expressions/Actions 	Click the Add Action... button to add a regular expression for to match. uses 's QRegExp, which understands most regular expressions as you would use in grep or egrep for instance.
You can add a description of the regular expression type (⪚ HTTP URL) by left clicking in the Description column.
You can find detailed information about the use of QRegExp regular expressions at http://doc.qt.io/qt-5/qregexp.html#details. Note that does not support the wildcard mode mentioned on this page.
Edit the regular expression as described above. To add a command to execute, click Add Command and edit the command in an in-place text editing box. Double-clicking on a command allows you to edit it.
Note that %s in the command line is replaced with the clipboard contents, ⪚ if your command definition is kwrite %s and your clipboard contents are /home/phil/textfile, the command kwrite /home/phil/textfile will be run. To include %s in the command line, escape it with a backslash, as so: \%s.
Advanced 	Brings up the Disable Actions for windows of type WM_CLASS dialog.
Some programs, such as , use the clipboard internally. If you get unwanted pop-ups all the time when using a certain application, do the following:
Open the application.
From a terminal, run xprop | grep WM_CLASS and then click on the window of the application you are running.
The first string after the equals sign is the one to enter.
Once the WM_CLASS is added, no more actions will be generated for windows of that application.

Shortcuts Options
The shortcuts page allows you to change the keyboard shortcuts which are used to access functions. You can change the shortcut to one of three things:
None 	The selected action cannot be accessed directly from the keyboard
Default 	The selected action uses 's default key. These are the shortcuts referred to in this manual.
Custom 	The selected action is assigned to the keys you choose.
To choose a custom key for the action you have selected, click on Custom and then None. Now type the desired key combination on your keyboard, as in any application.
If you define a shortcut for Open Klipper at Mouse Position pressing this shortcut will open the popup menu at the position of the mouse cursor, instead of their default position (in the Panel). Useful if you use the mouse more than the keyboard.