diff --git a/base/caveexpress/config.lua b/base/caveexpress/config.lua
index 6ea582d..0a15b1a 100644
--- a/base/caveexpress/config.lua
+++ b/base/caveexpress/config.lua
@@ -28,9 +28,15 @@ if isAndroid() then
 	defaultgreen = 5
 	defaultblue = 6
 elseif isHTML5() then
+	-- fredygames: sound through SDL_mixer, a fixed 1024x768 canvas that the page scales, and only the
+	-- "big" texture atlases (the build ships no "small" ones)
 	defaultfrontend = "opengl3"
-	defaultsoundengine = "dummy"
+	defaultsoundengine = "sdl"
 	defaultnetwork = false
+	defaultwidth = 1024
+	defaultheight = 768
+	defaultfullscreen = false
+	defaulttexturesize = "big"
 else
 	defaultflyingspeedx = 2.5
 	defaultgamecontroller = true
diff --git a/src/caveexpress/client/ui/windows/UIMainWindow.cpp b/src/caveexpress/client/ui/windows/UIMainWindow.cpp
index d32b98d..5ecb285 100644
--- a/src/caveexpress/client/ui/windows/UIMainWindow.cpp
+++ b/src/caveexpress/client/ui/windows/UIMainWindow.cpp
@@ -70,9 +70,12 @@ UIMainWindow::UIMainWindow (IFrontend *frontend, ServiceProvider& serviceProvide
 		panel->add(editor);
 	}
 
+#ifndef __EMSCRIPTEN__
+	// fredygames: the web build never leaves the page, so it has no homepage link
 	UINodeMainButton *homepage = new UINodeMainButton(_frontend, tr("Homepage"));
 	homepage->addListener(UINodeListenerPtr(new OpenURLListener(_frontend, "http://caveproductions.org/")));
 	panel->add(homepage);
+#endif
 
 	UINodeMainButton *help = new UINodeMainButton(_frontend, tr("Help"));
 	help->addListener(UINodeListenerPtr(new OpenWindowListener(UI_WINDOW_HELP)));
@@ -86,13 +89,12 @@ UIMainWindow::UIMainWindow (IFrontend *frontend, ServiceProvider& serviceProvide
 #endif
 #endif
 
+#ifndef __EMSCRIPTEN__
+	// fredygames: in the browser "Quit" used to navigate to the homepage; the page is closed instead
 	UINodeMainButton *quit = new UINodeMainButton(_frontend, tr("Quit"));
-#ifdef __EMSCRIPTEN__
-	quit->addListener(UINodeListenerPtr(new OpenURLListener(_frontend, "http://caveproductions.org/", false)));
-#else
 	quit->addListener(UINodeListenerPtr(new QuitListener()));
-#endif
 	panel->add(quit);
+#endif
 
 	add(panel);
 
diff --git a/src/modules/common/ConfigManager.cpp b/src/modules/common/ConfigManager.cpp
index 953f442..8eea06e 100644
--- a/src/modules/common/ConfigManager.cpp
+++ b/src/modules/common/ConfigManager.cpp
@@ -333,6 +333,11 @@ int ConfigManager::mapKey (const std::string& name)
 	return keycode;
 }
 
+void ConfigManager::save ()
+{
+	_persister->save(_configVars);
+}
+
 void ConfigManager::shutdown ()
 {
 	Log::info(LOG_COMMON, "shutdown config manager");
diff --git a/src/modules/common/ConfigManager.h b/src/modules/common/ConfigManager.h
index 05fc6b5..c1b33c4 100644
--- a/src/modules/common/ConfigManager.h
+++ b/src/modules/common/ConfigManager.h
@@ -116,6 +116,8 @@ public:
 
 	void init (IBindingSpaceListener *bindingSpaceListener, int argc, char **argv);
 	void shutdown ();
+	// fredygames: writes the config vars to the persister without shutting down
+	void save ();
 
 	bool renderToTexture() const;
 	int getClientSideParticleMaxAmount () const;
diff --git a/src/modules/common/ports/HTML5.cpp b/src/modules/common/ports/HTML5.cpp
index 1a8f7ed..fabbb1a 100644
--- a/src/modules/common/ports/HTML5.cpp
+++ b/src/modules/common/ports/HTML5.cpp
@@ -1,4 +1,6 @@
 #include "HTML5.h"
+#include "common/ConfigManager.h"
+#include <emscripten.h>
 
 extern "C" {
 // find these in contrib/installer/html5/library.js
@@ -52,6 +54,14 @@ void HTML5::backtrace (const char *errorMessage)
 
 int HTML5::openURL (const std::string& url, bool newWindow) const
 {
-	_jsOpenURL(url.c_str(), newWindow);
-	return 0;
+	// fredygames: the web build never opens other pages
+	Log::info(LOG_COMMON, "not opening %s", url.c_str());
+	return -1;
+}
+
+// fredygames: called by the page when the tab is hidden or closed; the game itself only writes the
+// settings when it shuts down (the campaign progress is written after each map)
+extern "C" EMSCRIPTEN_KEEPALIVE void fredygames_save ()
+{
+	Config.save();
 }
diff --git a/src/modules/common/ports/HTML5.h b/src/modules/common/ports/HTML5.h
index 1b0c0a1..e1605a3 100644
--- a/src/modules/common/ports/HTML5.h
+++ b/src/modules/common/ports/HTML5.h
@@ -15,4 +15,6 @@ public:
 	int openURL (const std::string& url, bool newWindow) const override;
 	void backtrace (const char *errorMessage) override;
 	bool supportsUserContent () const override { return false; }
+	// fredygames: the page has its own fullscreen button
+	bool isFullscreenSupported () override { return false; }
 };
diff --git a/src/modules/ui/windows/listener/TextureModeListener.h b/src/modules/ui/windows/listener/TextureModeListener.h
index 235821a..7c140a0 100644
--- a/src/modules/ui/windows/listener/TextureModeListener.h
+++ b/src/modules/ui/windows/listener/TextureModeListener.h
@@ -19,6 +19,11 @@ public:
 
 	void onClick () override
 	{
+#ifdef __EMSCRIPTEN__
+		// fredygames: the web build only ships the "big" texture atlases
+		if (_textureSize != "big")
+			return;
+#endif
 		if (_serviceProvider.getTextureDefinition().getTextureSize() == _textureSize)
 			return;
 		const TextureDefinition& td = _serviceProvider.getTextureDefinition();