diff --git a/CHANGES b/CHANGES
index d45a92a76..85669fc3e 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,3 +1,7 @@
+0.4.0: (Future)
+Misc:
+ - Qt: Window size command line options are now supported
+
 0.3.0: (2015-08-16)
 Features:
  - Ability to hide individual background layers, or OBJs
diff --git a/doc/mgba-qt.6 b/doc/mgba-qt.6
index 256384721..4ab76aafc 100644
--- a/doc/mgba-qt.6
+++ b/doc/mgba-qt.6
@@ -11,6 +11,7 @@
 .Nd Game Boy Advance emulator
 .Sh SYNOPSIS
 .Nm mgba-qt
+.Op Fl 123456f
 .Op Fl b Ar biosfile
 .Op Fl l Ar loglevel
 .Op Fl p Ar patchfile
@@ -21,12 +22,26 @@
 is a Game Boy Advance emulator.
 The options are as follows:
 .Bl -tag -width Ds
+.It Fl 1
+Scale the window 1\(mu.
+.It Fl 2
+Scale the window 2\(mu.
+.It Fl 3
+Scale the window 3\(mu.
+.It Fl 4
+Scale the window 4\(mu.
+.It Fl 5
+Scale the window 5\(mu.
+.It Fl 6
+Scale the window 6\(mu.
 .It Fl b Ar biosfile , Fl -bios Ar biosfile
 Specify a BIOS file to use during boot.
 If this flag is omitted,
 .Nm
 will use the BIOS specified in the configuration file,
 or a high\(hylevel emulated BIOS if none is specified.
+.It Fl f
+Start the emulator full\(hyscreen.
 .It Fl l Ar loglevel
 Log messages during emulation.
 .Ar loglevel
diff --git a/src/platform/commandline.c b/src/platform/commandline.c
index ff63f7c7a..e4142fffd 100644
--- a/src/platform/commandline.c
+++ b/src/platform/commandline.c
@@ -145,6 +145,7 @@ void initParserForGraphics(struct SubParser* parser, struct GraphicsOpts* opts)
 	parser->parse = _parseGraphicsArg;
 	parser->extraOptions = GRAPHICS_OPTIONS;
 	opts->multiplier = 0;
+	opts->fullscreen = false;
 }
 
 bool _parseGraphicsArg(struct SubParser* parser, struct GBAConfig* config, int option, const char* arg) {
@@ -152,6 +153,7 @@ bool _parseGraphicsArg(struct SubParser* parser, struct GBAConfig* config, int o
 	struct GraphicsOpts* graphicsOpts = parser->opts;
 	switch (option) {
 	case 'f':
+		graphicsOpts->fullscreen = true;
 		GBAConfigSetDefaultIntValue(config, "fullscreen", 1);
 		return true;
 	case '1':
diff --git a/src/platform/commandline.h b/src/platform/commandline.h
index 32275633b..203895088 100644
--- a/src/platform/commandline.h
+++ b/src/platform/commandline.h
@@ -42,6 +42,7 @@ struct SubParser {
 
 struct GraphicsOpts {
 	int multiplier;
+	bool fullscreen;
 };
 
 struct GBAThread;
diff --git a/src/platform/qt/ConfigController.cpp b/src/platform/qt/ConfigController.cpp
index 2a0ae0184..4fd374c1b 100644
--- a/src/platform/qt/ConfigController.cpp
+++ b/src/platform/qt/ConfigController.cpp
@@ -126,8 +126,8 @@ ConfigController::~ConfigController() {
 	GBAConfigFreeOpts(&m_opts);
 }
 
-bool ConfigController::parseArguments(GBAArguments* args, int argc, char* argv[]) {
-	if (::parseArguments(args, &m_config, argc, argv, 0)) {
+bool ConfigController::parseArguments(GBAArguments* args, int argc, char* argv[], SubParser* subparser) {
+	if (::parseArguments(args, &m_config, argc, argv, subparser)) {
 		GBAConfigMap(&m_config, &m_opts);
 		return true;
 	}
diff --git a/src/platform/qt/ConfigController.h b/src/platform/qt/ConfigController.h
index 3b0de11b2..439c14653 100644
--- a/src/platform/qt/ConfigController.h
+++ b/src/platform/qt/ConfigController.h
@@ -16,6 +16,7 @@
 extern "C" {
 #include "gba/supervisor/config.h"
 #include "util/configuration.h"
+#include "platform/commandline.h"
 }
 
 class QAction;
@@ -64,7 +65,7 @@ public:
 	~ConfigController();
 
 	const GBAOptions* options() const { return &m_opts; }
-	bool parseArguments(GBAArguments* args, int argc, char* argv[]);
+	bool parseArguments(GBAArguments* args, int argc, char* argv[], SubParser* subparser = nullptr);
 
 	ConfigOption* addOption(const char* key);
 	void updateOption(const char* key);
diff --git a/src/platform/qt/GBAApp.cpp b/src/platform/qt/GBAApp.cpp
index ed9645ec9..72c72cda8 100644
--- a/src/platform/qt/GBAApp.cpp
+++ b/src/platform/qt/GBAApp.cpp
@@ -50,9 +50,12 @@ GBAApp::GBAApp(int& argc, char* argv[])
 	}
 
 	GBAArguments args;
-	bool loaded = m_configController.parseArguments(&args, argc, argv);
+	GraphicsOpts graphicsOpts;
+	SubParser subparser;
+	initParserForGraphics(&subparser, &graphicsOpts);
+	bool loaded = m_configController.parseArguments(&args, argc, argv, &subparser);
 	if (loaded && args.showHelp) {
-		usage(argv[0], 0);
+		usage(argv[0], subparser.usage);
 		::exit(0);
 		return;
 	}
@@ -72,6 +75,14 @@ GBAApp::GBAApp(int& argc, char* argv[])
 		w->loadConfig();
 	}
 	freeArguments(&args);
+
+	if (graphicsOpts.multiplier) {
+		w->resizeFrame(VIDEO_HORIZONTAL_PIXELS * graphicsOpts.multiplier, VIDEO_VERTICAL_PIXELS * graphicsOpts.multiplier);
+	}
+	if (graphicsOpts.fullscreen) {
+		w->enterFullScreen();
+	}
+
 	w->show();
 
 	w->controller()->setMultiplayerController(&m_multiplayer);