diff --git a/data.qrc b/data.qrc
index 9a9c3b4..0eeacf3 100644
--- a/data.qrc
+++ b/data.qrc
@@ -21,5 +21,6 @@
         <file>data/images/add.png</file>
         <file>data/images/font-color.png</file>
         <file>data/images/overline.png</file>
+        <file>data/images/font-size.png</file>
     </qresource>
 </RCC>
diff --git a/data/images/font-size.png b/data/images/font-size.png
new file mode 100644
index 0000000..b38bc84
Binary files /dev/null and b/data/images/font-size.png differ
diff --git a/mainwindow.cpp b/mainwindow.cpp
index 8e15730..83b7574 100644
--- a/mainwindow.cpp
+++ b/mainwindow.cpp
@@ -9,6 +9,8 @@
 #include <QTextEdit>
 #include <QColorDialog>
 #include <QPlainTextEdit>
+#include <QInputDialog>
+#include <QFontDialog>
 
 MainWindow::MainWindow(QWidget *parent)
     : QMainWindow(parent)
@@ -325,3 +327,50 @@ void MainWindow::on_actionOverline_triggered()
     this->setOverline();
 }
 
+void MainWindow::setSize(){
+    QWidget *focused = QApplication::focusWidget();
+    QPlainTextEdit* plainTextEdit = qobject_cast<QPlainTextEdit*>(focused);
+
+    if (plainTextEdit) {
+        QTextCursor cursor = plainTextEdit->textCursor();
+        if (cursor.hasSelection()) {
+            bool ok;
+            int size = QInputDialog::getInt(this, "Taille de la police", "Entrez la taille de la police:", cursor.charFormat().font().pointSize(), 1, 100, 1, &ok);
+
+            if (ok) {
+                QTextCharFormat format;
+                QFont font = cursor.charFormat().font();
+                font.setPointSize(size);
+                format.setFont(font);
+                cursor.mergeCharFormat(format);
+            }
+        }
+    }
+}
+void MainWindow::on_actionSize_triggered()
+{
+    this->setSize();
+}
+
+void MainWindow::setFont(){
+    QWidget *focused = QApplication::focusWidget();
+    QPlainTextEdit* plainTextEdit = qobject_cast<QPlainTextEdit*>(focused);
+
+    if (plainTextEdit) {
+        QTextCursor cursor = plainTextEdit->textCursor();
+        if (cursor.hasSelection()) {
+            bool ok;
+            QFont font = QFontDialog::getFont(&ok, cursor.charFormat().font(), this, "Choisir une police");
+            if (ok) {
+                QTextCharFormat format;
+                format.setFont(font);
+                cursor.mergeCharFormat(format);
+            }
+        }
+    }
+}
+void MainWindow::on_actionFont_triggered()
+{
+    this->setFont();
+}
+
diff --git a/mainwindow.h b/mainwindow.h
index a3e7c94..ce4d9ac 100644
--- a/mainwindow.h
+++ b/mainwindow.h
@@ -31,6 +31,8 @@ public:
     void setUnderline();
     void setColor();
     void setOverline();
+    void setSize();
+    void setFont();
 
 private slots:
     void on_pushButton_clicked();
@@ -58,6 +60,10 @@ private slots:
 
     void on_actionOverline_triggered();
 
+    void on_actionSize_triggered();
+
+    void on_actionFont_triggered();
+
 private:
     Ui::MainWindow *ui;
     QString currentFile;
diff --git a/mainwindow.ui b/mainwindow.ui
index 56a0bdf..769efb3 100644
--- a/mainwindow.ui
+++ b/mainwindow.ui
@@ -343,6 +343,8 @@
    <addaction name="actionEditRedo"/>
    <addaction name="separator"/>
    <addaction name="actionColor"/>
+   <addaction name="actionFont"/>
+   <addaction name="actionSize"/>
    <addaction name="actionBold"/>
    <addaction name="actionItalic"/>
    <addaction name="actionUnderline"/>
@@ -537,6 +539,24 @@
     <string>Overline</string>
    </property>
   </action>
+  <action name="actionFont">
+   <property name="icon">
+    <iconset resource="data.qrc">
+     <normaloff>:/data/images/data/images/font.png</normaloff>:/data/images/data/images/font.png</iconset>
+   </property>
+   <property name="text">
+    <string>Font</string>
+   </property>
+  </action>
+  <action name="actionSize">
+   <property name="icon">
+    <iconset resource="data.qrc">
+     <normaloff>:/data/images/data/images/font-size.png</normaloff>:/data/images/data/images/font-size.png</iconset>
+   </property>
+   <property name="text">
+    <string>Size</string>
+   </property>
+  </action>
  </widget>
  <resources>
   <include location="data.qrc"/>