diff --git a/LogarithmPlotter/qml/eu/ad5001/LogarithmPlotter/History/History.qml b/LogarithmPlotter/qml/eu/ad5001/LogarithmPlotter/History/History.qml
index e6caf9d..bdbc768 100644
--- a/LogarithmPlotter/qml/eu/ad5001/LogarithmPlotter/History/History.qml
+++ b/LogarithmPlotter/qml/eu/ad5001/LogarithmPlotter/History/History.qml
@@ -18,6 +18,7 @@
 
 import QtQuick 2.12
 import QtQml 2.12
+import QtQuick.Window 2.12
 import "../js/objects.js" as Objects
 import "../js/historylib.js" as HistoryLib
 import "../js/history/common.js" as HistoryCommon
@@ -215,5 +216,6 @@ Item {
     Component.onCompleted: {
         HistoryLib.history = historyObj
         HistoryCommon.themeTextColor = sysPalette.windowText
+        HistoryCommon.imageDepth = Screen.devicePixelRatio
     }
 }
diff --git a/LogarithmPlotter/qml/eu/ad5001/LogarithmPlotter/ObjectLists/ObjectRow.qml b/LogarithmPlotter/qml/eu/ad5001/LogarithmPlotter/ObjectLists/ObjectRow.qml
index 11ce7aa..ca02fe9 100644
--- a/LogarithmPlotter/qml/eu/ad5001/LogarithmPlotter/ObjectLists/ObjectRow.qml
+++ b/LogarithmPlotter/qml/eu/ad5001/LogarithmPlotter/ObjectLists/ObjectRow.qml
@@ -19,6 +19,7 @@
 import QtQuick 2.12
 import QtQuick.Dialogs 1.3 as D
 import QtQuick.Controls 2.12
+import QtQuick.Window 2.12
 import eu.ad5001.LogarithmPlotter.Setting 1.0 as Setting
 import "../js/objects.js" as Objects
 import "../js/historylib.js" as HistoryLib
@@ -100,8 +101,8 @@ Item {
             anchors.verticalCenter: parent.verticalCenter
             anchors.left: parent.left
             visible: LatexJS.enabled
-            property double depth: 2
-            property var ltxInfo: visible ? Latex.render(obj.getLatexString(), depth*parent.font.pixelSize+4, parent.color).split(",") : ["","0","0"]
+            property double depth: Screen.devicePixelRatio
+            property var ltxInfo: visible ? Latex.render(obj.getLatexString(), depth*(parent.font.pixelSize+2), parent.color).split(",") : ["","0","0"]
             source: visible ? ltxInfo[0] : ""
             width: parseInt(ltxInfo[1])/depth
             height: parseInt(ltxInfo[2])/depth
diff --git a/LogarithmPlotter/qml/eu/ad5001/LogarithmPlotter/Setting/Icon.qml b/LogarithmPlotter/qml/eu/ad5001/LogarithmPlotter/Setting/Icon.qml
index 7df012c..7cf3b31 100644
--- a/LogarithmPlotter/qml/eu/ad5001/LogarithmPlotter/Setting/Icon.qml
+++ b/LogarithmPlotter/qml/eu/ad5001/LogarithmPlotter/Setting/Icon.qml
@@ -15,7 +15,8 @@
  *  You should have received a copy of the GNU General Public License
  *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
-import QtQuick 2.7
+import QtQuick 2.12
+import QtQuick.Window 2.12
 import QtGraphicalEffects 1.0
 
 /*!
@@ -48,8 +49,8 @@ Item {
         width: parent.width
         //smooth: true
         visible: false
-        sourceSize.width: width*2
-        sourceSize.height: width*2
+        sourceSize.width: width*Screen.devicePixelRatio
+        sourceSize.height: width*Screen.devicePixelRatio
     }
     ColorOverlay {
         anchors.fill: img
diff --git a/LogarithmPlotter/qml/eu/ad5001/LogarithmPlotter/js/history/common.js b/LogarithmPlotter/qml/eu/ad5001/LogarithmPlotter/js/history/common.js
index 92811d9..0cdf6a7 100644
--- a/LogarithmPlotter/qml/eu/ad5001/LogarithmPlotter/js/history/common.js
+++ b/LogarithmPlotter/qml/eu/ad5001/LogarithmPlotter/js/history/common.js
@@ -98,7 +98,7 @@ class Action {
     renderLatexAsHtml(latexString) {
         if(!Latex.enabled)
             throw new Error("Cannot render an item as LaTeX when LaTeX is disabled.")
-        let latexInfo = Latex.Renderer.render(latexString, imageDepth*fontSize+4, themeTextColor).split(",")
+        let latexInfo = Latex.Renderer.render(latexString, imageDepth*(fontSize+2), themeTextColor).split(",")
         return `<img src="${latexInfo[0]}" width="${parseInt(latexInfo[1])/imageDepth}" height="${parseInt(latexInfo[2])/imageDepth}" style="vertical-align: middle"></img>`
     }