diff --git a/src/teletext/renderer.py b/src/teletext/renderer.py
index e179889..f2888d1 100755
--- a/src/teletext/renderer.py
+++ b/src/teletext/renderer.py
@@ -58,7 +58,7 @@ class TeletextCanvas(QWidget):
     def __init__(self, parent=None):
         super().__init__(parent)
         self.setMouseTracking(True) # Just in case
-        self.setMinimumSize(480, 500) # 40x12 * 25x20 approx
+        self.setMinimumSize(800, 600) # 40x20 * 25x24
         self.page: Page = None
         self.subset_idx = 0 # Default English
         
@@ -66,8 +66,8 @@ class TeletextCanvas(QWidget):
         # We will render to a fixed size QImage and scale it
         self.cols = 40
         self.rows = 25
-        self.cell_w = 12
-        self.cell_h = 20
+        self.cell_w = 20
+        self.cell_h = 24
         self.img_w = self.cols * self.cell_w
         self.img_h = self.rows * self.cell_h
         
@@ -75,7 +75,7 @@ class TeletextCanvas(QWidget):
         self.buffer.fill(Qt.GlobalColor.black)
         
         # Font for text
-        self.font = QFont("Courier New", 14)
+        self.font = QFont("Courier New", 18)
         self.font.setStyleHint(QFont.StyleHint.Monospace)
         self.font.setBold(True)