diff --git a/packages/wolf_3d_dart/lib/src/rendering/sixel_renderer.dart b/packages/wolf_3d_dart/lib/src/rendering/sixel_renderer.dart
index 0e2353d..fa40328 100644
--- a/packages/wolf_3d_dart/lib/src/rendering/sixel_renderer.dart
+++ b/packages/wolf_3d_dart/lib/src/rendering/sixel_renderer.dart
@@ -198,17 +198,16 @@ class SixelRenderer extends CliRendererBackend<String> {
       _outputHeight = math.max(1, (_outputWidth / _targetAspectRatio).floor());
     }
 
-    // Horizontal: cell-width estimates vary by terminal/font and cause right-shift
-    // clipping, so keep the image at column 0.
-    // Vertical: use a conservative row estimate and keep one spare row so the
-    // terminal does not scroll the image upward when its actual cell height is
-    // smaller than our approximation.
+    // Horizontal: cell-width estimates vary by terminal/font and can cause
+    // right-shift clipping, so keep the image anchored at column 0.
+    // Vertical: keep one spare row to avoid scroll, but anchor to the bottom
+    // of the viewport so we avoid obvious empty space under the image.
     final int imageRows = math.max(
       1,
       (_outputHeight / _defaultLineHeightPx).ceil() + _terminalRowSafetyMargin,
     );
     _offsetColumns = 0;
-    _offsetRows = math.max(0, (terminalRows - imageRows) ~/ 2);
+    _offsetRows = math.max(0, terminalRows - imageRows);
 
     if (_offsetColumns != previousOffsetColumns ||
         _offsetRows != previousOffsetRows ||
diff --git a/packages/wolf_3d_renderer/lib/wolf_3d_flutter_renderer.dart b/packages/wolf_3d_renderer/lib/wolf_3d_flutter_renderer.dart
index a5f80b1..65c86be 100644
--- a/packages/wolf_3d_renderer/lib/wolf_3d_flutter_renderer.dart
+++ b/packages/wolf_3d_renderer/lib/wolf_3d_flutter_renderer.dart
@@ -24,8 +24,8 @@ class WolfFlutterRenderer extends BaseWolfRenderer {
 
 class _WolfFlutterRendererState
     extends BaseWolfRendererState<WolfFlutterRenderer> {
-  static const int _renderWidth = 320;
-  static const int _renderHeight = 200;
+  static const int _renderWidth = 640;
+  static const int _renderHeight = 400;
   final SoftwareRenderer _renderer = SoftwareRenderer();
 
   ui.Image? _renderedFrame;
@@ -34,7 +34,8 @@ class _WolfFlutterRendererState
   @override
   void initState() {
     super.initState();
-    // Match the original Wolf3D software resolution for the pixel renderer.
+    // Render at 2x canonical resolution so menu/UI edges stay crisp and avoid
+    // bleed when the output is scaled to the host viewport.
     if (widget.engine.frameBuffer.width != _renderWidth ||
         widget.engine.frameBuffer.height != _renderHeight) {
       widget.engine.setFrameBuffer(_renderWidth, _renderHeight);
diff --git a/packages/wolf_3d_renderer/lib/wolf_3d_glsl_renderer.dart b/packages/wolf_3d_renderer/lib/wolf_3d_glsl_renderer.dart
index 51528fb..c29173d 100644
--- a/packages/wolf_3d_renderer/lib/wolf_3d_glsl_renderer.dart
+++ b/packages/wolf_3d_renderer/lib/wolf_3d_glsl_renderer.dart
@@ -31,8 +31,8 @@ class WolfGlslRenderer extends BaseWolfRenderer {
 }
 
 class _WolfGlslRendererState extends BaseWolfRendererState<WolfGlslRenderer> {
-  static const int _renderWidth = 640;
-  static const int _renderHeight = 400;
+  static const int _renderWidth = 960;
+  static const int _renderHeight = 600;
 
   final SoftwareRenderer _renderer = SoftwareRenderer();