touchegg.conf

<touchégg>

  <settings>
    <property name="animation_delay">150</property>
    <property name="action_execute_threshold">10</property>
    <property name="color">auto</property>
    <property name="borderColor">auto</property>
  </settings>

  <application name="All">
    <!-- 4-finger swipe up to show overview -->
    <gesture type="SWIPE" fingers="4" direction="UP">
        <action type="RUN_COMMAND">
            <repeat>false</repeat>
            <command>qdbus org.kde.kglobalaccel /component/kwin invokeShortcut 'Overview'</command>
            <on>begin</on>
        </action>
    </gesture>

    <!-- 4-finger swipe down to show desktop -->
    <gesture type="SWIPE" fingers="4" direction="DOWN">
      <action type="SHOW_DESKTOP">
        <animate>true</animate>
      </action>
    </gesture>

    <!-- 4-finger swipe left to switch to the previous tab -->
    <gesture type="SWIPE" fingers="4" direction="RIGHT">
      <action type="SEND_KEYS">
        <repeat>false</repeat>
        <modifiers>Control_L</modifiers>
        <keys>Shift_L+Tab</keys>
        <on>begin</on>
      </action>
    </gesture>

    <!-- 4-finger swipe right to switch to the next tab -->
    <gesture type="SWIPE" fingers="4" direction="LEFT">
      <action type="SEND_KEYS">
        <repeat>false</repeat>
        <modifiers>Control_L</modifiers>
        <keys>Tab</keys>
        <on>begin</on>
      </action>
    </gesture>

    <!-- 3-finger swipe left to switch windows -->
    <gesture type="SWIPE" fingers="3" direction="LEFT">
      <action type="SEND_KEYS">
        <repeat>true</repeat>
        <modifiers>Alt_L</modifiers>
        <keys>Tab</keys>
        <on>begin</on>
      </action>
    </gesture>

    <!-- 3-finger swipe right to switch windows -->
    <gesture type="SWIPE" fingers="3" direction="RIGHT">
      <action type="SEND_KEYS">
        <repeat>true</repeat>
        <modifiers>Alt_L</modifiers>
        <keys>Shift_L+Tab</keys>
        <on>begin</on>
      </action>
    </gesture>

    <!-- 3-finger swipe up to switch to the next desktop -->
    <gesture type="SWIPE" fingers="3" direction="UP">
      <action type="CHANGE_DESKTOP">
        <direction>next</direction>
        <animate>true</animate>
      </action>
    </gesture>

    <!-- 3-finger swipe down to switch to the previous desktop -->
    <gesture type="SWIPE" fingers="3" direction="DOWN">
      <action type="CHANGE_DESKTOP">
        <direction>previous</direction>
        <animate>true</animate>
      </action>
    </gesture>

    <!-- 3-finger pinch to increase volume -->
    <gesture type="PINCH" fingers="3" direction="OUT">
      <action type="RUN_COMMAND">
        <repeat>true</repeat>
        <command>qdbus org.kde.kglobalaccel /component/kmix invokeShortcut 'increase_volume'</command>
        <on>begin</on>
      </action>
    </gesture>

    <!-- 3-finger pinch to decrease volume -->
    <gesture type="PINCH" fingers="3" direction="IN">
      <action type="RUN_COMMAND">
        <repeat>true</repeat>
        <command>qdbus org.kde.kglobalaccel /component/kmix invokeShortcut 'decrease_volume'</command>
        <on>begin</on>
      </action>
    </gesture>
  </application>

  <!-- Configuration for specific applications -->
  <application name="Google-chrome,Chromium,Firefox,Brave-browser,gwenview">
    <gesture type="PINCH" fingers="2" direction="IN">
      <action type="SEND_KEYS">
        <repeat>true</repeat>
        <modifiers>Control_L</modifiers>
        <keys>KP_Subtract</keys>
        <decreaseKeys>KP_Add</decreaseKeys>
      </action>
    </gesture>

    <gesture type="PINCH" fingers="2" direction="OUT">
      <action type="SEND_KEYS">
        <repeat>true</repeat>
        <modifiers>Control_L</modifiers>
        <keys>KP_Add</keys>
        <decreaseKeys>KP_Subtract</decreaseKeys>
      </action>
    </gesture>
  </application>

</touchégg>