diff --git a/src/Mod/MeshPart/Gui/CrossSections.cpp b/src/Mod/MeshPart/Gui/CrossSections.cpp
index 5ecd5524a5..64e4f6b52c 100644
--- a/src/Mod/MeshPart/Gui/CrossSections.cpp
+++ b/src/Mod/MeshPart/Gui/CrossSections.cpp
@@ -355,7 +355,7 @@ void CrossSections::apply()
             s += "_cs";
             Gui::Command::runCommand(
                 Gui::Command::App,
-                QString::fromLatin1(
+                QStringLiteral(
                     "points=FreeCAD.getDocument(\"%1\").%2.Mesh.crossSections(%3, %4, %5)\n"
                     "wires=[]\n"
                     "for i in points:\n"
@@ -369,7 +369,7 @@ void CrossSections::apply()
 
             Gui::Command::runCommand(
                 Gui::Command::App,
-                QString::fromLatin1(
+                QStringLiteral(
                     "comp=Part.Compound(wires)\n"
                     "slice=FreeCAD.getDocument(\"%1\").addObject(\"Part::Feature\",\"%2\")\n"
                     "slice.Shape=comp\n"
diff --git a/src/Mod/MeshPart/Gui/TaskCurveOnMesh.cpp b/src/Mod/MeshPart/Gui/TaskCurveOnMesh.cpp
index 39e088d051..7f56c69428 100644
--- a/src/Mod/MeshPart/Gui/TaskCurveOnMesh.cpp
+++ b/src/Mod/MeshPart/Gui/TaskCurveOnMesh.cpp
@@ -54,10 +54,10 @@ CurveOnMeshWidget::~CurveOnMeshWidget()
 void CurveOnMeshWidget::setup()
 {
     ui->meshTolerance->setValue(0.2);
-    ui->continuity->addItem(QString::fromLatin1("C0"), static_cast<int>(GeomAbs_C0));
-    ui->continuity->addItem(QString::fromLatin1("C1"), static_cast<int>(GeomAbs_C1));
-    ui->continuity->addItem(QString::fromLatin1("C2"), static_cast<int>(GeomAbs_C2));
-    ui->continuity->addItem(QString::fromLatin1("C3"), static_cast<int>(GeomAbs_C3));
+    ui->continuity->addItem(QStringLiteral("C0"), static_cast<int>(GeomAbs_C0));
+    ui->continuity->addItem(QStringLiteral("C1"), static_cast<int>(GeomAbs_C1));
+    ui->continuity->addItem(QStringLiteral("C2"), static_cast<int>(GeomAbs_C2));
+    ui->continuity->addItem(QStringLiteral("C3"), static_cast<int>(GeomAbs_C3));
     ui->continuity->setCurrentIndex(2);
 
     for (int i = 0; i < 8; i++) {
diff --git a/src/Mod/MeshPart/Gui/Tessellation.cpp b/src/Mod/MeshPart/Gui/Tessellation.cpp
index 875f98433c..c16dab8c77 100644
--- a/src/Mod/MeshPart/Gui/Tessellation.cpp
+++ b/src/Mod/MeshPart/Gui/Tessellation.cpp
@@ -330,15 +330,14 @@ void Tessellation::process(int method,
 
             QString param = getMeshingParameters(method, sobj);
 
-            QString cmd =
-                QString::fromLatin1("__doc__=FreeCAD.getDocument(\"%1\")\n"
-                                    "__mesh__=__doc__.addObject(\"Mesh::Feature\",\"Mesh\")\n"
-                                    "__part__=__doc__.getObject(\"%2\")\n"
-                                    "__shape__=Part.getShape(__part__,\"%3\")\n"
-                                    "__mesh__.Mesh=MeshPart.meshFromShape(%4)\n"
-                                    "__mesh__.Label=\"%5 (Meshed)\"\n"
-                                    "del __doc__, __mesh__, __part__, __shape__\n")
-                    .arg(this->document, objname, subname, param, label);
+            QString cmd = QStringLiteral("__doc__=FreeCAD.getDocument(\"%1\")\n"
+                                         "__mesh__=__doc__.addObject(\"Mesh::Feature\",\"Mesh\")\n"
+                                         "__part__=__doc__.getObject(\"%2\")\n"
+                                         "__shape__=Part.getShape(__part__,\"%3\")\n"
+                                         "__mesh__.Mesh=MeshPart.meshFromShape(%4)\n"
+                                         "__mesh__.Label=\"%5 (Meshed)\"\n"
+                                         "del __doc__, __mesh__, __part__, __shape__\n")
+                              .arg(this->document, objname, subname, param, label);
 
             Gui::Command::runCommand(Gui::Command::Doc, cmd.toUtf8());
 
@@ -453,15 +452,15 @@ QString Tessellation::getStandardParameters(App::DocumentObject* obj) const
     bool relative = ui->relativeDeviation->isChecked();
 
     QString param;
-    param = QString::fromLatin1("Shape=__shape__, "
-                                "LinearDeflection=%1, "
-                                "AngularDeflection=%2, "
-                                "Relative=%3")
+    param = QStringLiteral("Shape=__shape__, "
+                           "LinearDeflection=%1, "
+                           "AngularDeflection=%2, "
+                           "Relative=%3")
                 .arg(devFace)
                 .arg(devAngle)
-                .arg(relative ? QString::fromLatin1("True") : QString::fromLatin1("False"));
+                .arg(relative ? QStringLiteral("True") : QStringLiteral("False"));
     if (ui->meshShapeColors->isChecked()) {
-        param += QString::fromLatin1(",Segments=True");
+        param += QStringLiteral(",Segments=True");
     }
 
     auto svp = Base::freecad_dynamic_cast<PartGui::ViewProviderPartExt>(
@@ -478,10 +477,9 @@ QString Tessellation::getStandardParameters(App::DocumentObject* obj) const
         //
         // PartGui::ViewProviderPartExt::getShapeColors().
         //
-        param +=
-            QString::fromLatin1(",GroupColors=Gui.getDocument('%1').getObject('%2').DiffuseColor")
-                .arg(QString::fromLatin1(obj->getDocument()->getName()),
-                     QString::fromLatin1(obj->getNameInDocument()));
+        param += QStringLiteral(",GroupColors=Gui.getDocument('%1').getObject('%2').DiffuseColor")
+                     .arg(QString::fromLatin1(obj->getDocument()->getName()),
+                          QString::fromLatin1(obj->getNameInDocument()));
     }
 
     return param;
@@ -493,7 +491,7 @@ QString Tessellation::getMefistoParameters() const
     if (!ui->spinMaximumEdgeLength->isEnabled()) {
         maxEdge = 0;
     }
-    return QString::fromLatin1("Shape=__shape__,MaxLength=%1").arg(maxEdge);
+    return QStringLiteral("Shape=__shape__,MaxLength=%1").arg(maxEdge);
 }
 
 QString Tessellation::getNetgenParameters() const
@@ -507,17 +505,17 @@ QString Tessellation::getNetgenParameters() const
     bool optimize = ui->checkOptimizeSurface->isChecked();
     bool allowquad = ui->checkQuadDominated->isChecked();
     if (fineness <= int(VeryFine)) {
-        param = QString::fromLatin1("Shape=__shape__,"
-                                    "Fineness=%1,SecondOrder=%2,Optimize=%3,AllowQuad=%4")
+        param = QStringLiteral("Shape=__shape__,"
+                               "Fineness=%1,SecondOrder=%2,Optimize=%3,AllowQuad=%4")
                     .arg(fineness)
                     .arg(secondOrder ? 1 : 0)
                     .arg(optimize ? 1 : 0)
                     .arg(allowquad ? 1 : 0);
     }
     else {
-        param = QString::fromLatin1("Shape=__shape__,"
-                                    "GrowthRate=%1,SegPerEdge=%2,SegPerRadius=%3,SecondOrder=%4,"
-                                    "Optimize=%5,AllowQuad=%6")
+        param = QStringLiteral("Shape=__shape__,"
+                               "GrowthRate=%1,SegPerEdge=%2,SegPerRadius=%3,SecondOrder=%4,"
+                               "Optimize=%5,AllowQuad=%6")
                     .arg(growthRate)
                     .arg(nbSegPerEdge)
                     .arg(nbSegPerRadius)