diff --git a/code/ryzom/client/data/gamedev/interfaces_v3/game_config.xml b/code/ryzom/client/data/gamedev/interfaces_v3/game_config.xml
index 38e63cb24..001d2be1d 100644
--- a/code/ryzom/client/data/gamedev/interfaces_v3/game_config.xml
+++ b/code/ryzom/client/data/gamedev/interfaces_v3/game_config.xml
@@ -878,10 +878,17 @@
                   posparent="lum"
                   x="0"
                   y="-2" />
+        <instance template="tgcw_scrollbarfloat"
+                  id="scale"
+                  text="uiInterfaceScale"
+                  posref="BL TL"
+                  posparent="gam"
+                  x="0"
+                  y="-2" />
         <instance template="tgcw_checkbox"
                   id="waitvbl"
                   text="uiWaitVBL"
-                  posparent="gam"
+                  posparent="scale"
                   posref="BL TL"
                   x="-20"
                   y="-28" />
@@ -3086,6 +3093,13 @@
                realtime="true"
                widget="sbfloat"
                link="Gamma" />
+        <param ui="general:scale:c"
+               type="cfg"
+               realtime="false"
+               ui_view="general:scale:c_res"
+               ui_decimal="2"
+               widget="sbfloat"
+               link="InterfaceScale" />
         <param ui="general:waitvbl:c"
                type="cfg"
                realtime="true"
diff --git a/code/ryzom/client/src/client_cfg.cpp b/code/ryzom/client/src/client_cfg.cpp
index 48e187263..e321fdd6a 100644
--- a/code/ryzom/client/src/client_cfg.cpp
+++ b/code/ryzom/client/src/client_cfg.cpp
@@ -300,6 +300,8 @@ CClientConfig::CClientConfig()
 	Luminosity			= 0.f;						// Default Monitor Luminosity.
 	Gamma				= 0.f;						// Default Monitor Gamma.
 
+	InterfaceScale		= 1.0f;                     // Resize UI
+
 	VREnable			= false;
 	VRDisplayDevice		= "Auto";
 	VRDisplayDeviceId	= "";
@@ -833,6 +835,10 @@ void CClientConfig::setValues()
 	READ_FLOAT_FV(Luminosity)
 	// Gamma
 	READ_FLOAT_FV(Gamma)
+	// UI scaling
+	READ_FLOAT_FV(InterfaceScale);
+	// 50% smaller / 2x bigger
+	clamp(ClientCfg.InterfaceScale, 0.5f, 2.0f);
 	// 3D Driver
 	varPtr = ClientCfg.ConfigFile.getVarPtr ("Driver3D");
 	if (varPtr)
diff --git a/code/ryzom/client/src/client_cfg.h b/code/ryzom/client/src/client_cfg.h
index 5fe0cfa1c..157503957 100644
--- a/code/ryzom/client/src/client_cfg.h
+++ b/code/ryzom/client/src/client_cfg.h
@@ -146,6 +146,9 @@ struct CClientConfig
 	/// Monitor Gamma [-1 ~ 1], default 0
 	float			Gamma;
 
+	// UI scaling
+	float			InterfaceScale;
+
 	// VR
 	bool			VREnable;
 	std::string		VRDisplayDevice;
diff --git a/code/ryzom/client/src/connection.cpp b/code/ryzom/client/src/connection.cpp
index 69c05cc08..a434db2e4 100644
--- a/code/ryzom/client/src/connection.cpp
+++ b/code/ryzom/client/src/connection.cpp
@@ -227,6 +227,9 @@ void connectionRestoreVideoMode ()
 	SetMouseCursor ();
 	SetMouseSpeed (ClientCfg.CursorSpeed);
 	SetMouseAcceleration (ClientCfg.CursorAcceleration);
+
+	// Restore user UI scaling
+	CViewRenderer::getInstance()->setInterfaceScale(ClientCfg.InterfaceScale);
 }
 
 
@@ -290,6 +293,8 @@ void	setOutGameFullScreen()
 		*/
 	}
 
+	// Enable auto scaling in login window
+	CViewRenderer::getInstance()->setInterfaceScale(1.0f, 1024, 768);
 }
 
 
@@ -454,6 +459,9 @@ bool connection (const string &cookie, const string &fsaddr)
 
 	firstConnection = false;
 
+	// Restore user UI scaling
+	CViewRenderer::getInstance()->setInterfaceScale(ClientCfg.InterfaceScale);
+
 	// Disable inputs
 	Actions.enable(false);
 	EditActions.enable(false);
@@ -586,6 +594,9 @@ bool reconnection()
 		InterfaceState = globalMenu();
 	}
 
+	// Restore user UI scaling
+	CViewRenderer::getInstance()->setInterfaceScale(ClientCfg.InterfaceScale);
+
 	// Disable inputs
 	Actions.enable(false);
 	EditActions.enable(false);
diff --git a/code/ryzom/client/src/init.cpp b/code/ryzom/client/src/init.cpp
index 7b1ca728f..8105d9351 100644
--- a/code/ryzom/client/src/init.cpp
+++ b/code/ryzom/client/src/init.cpp
@@ -1316,6 +1316,7 @@ void prelogInit()
 
 
 		CInterfaceManager::getInstance();
+		CViewRenderer::getInstance()->setInterfaceScale(1.0f, 1024, 768);
 
 		// Yoyo: initialize NOW the InputHandler for Event filtering.
 		CInputHandlerManager *InputHandlerManager = CInputHandlerManager::getInstance();
diff --git a/code/ryzom/client/src/interface_v3/interface_manager.cpp b/code/ryzom/client/src/interface_v3/interface_manager.cpp
index 3e2a0ba0e..802f98c70 100644
--- a/code/ryzom/client/src/interface_v3/interface_manager.cpp
+++ b/code/ryzom/client/src/interface_v3/interface_manager.cpp
@@ -475,6 +475,8 @@ CInterfaceManager::CInterfaceManager()
 	interfaceLinkUpdater = new CInterfaceLink::CInterfaceLinkUpdater();
 	_ScreenW = _ScreenH = 0;
 	_LastInGameScreenW = _LastInGameScreenH = 0;
+	_InterfaceScaleChanged = false;
+	_InterfaceScale = 1.0f;
 	_DescTextTarget = NULL;
 	_ConfigLoaded = false;
 	_LogState = false;
@@ -1984,6 +1986,14 @@ void CInterfaceManager::drawViews(NL3D::UCamera camera)
 		_CurrentPlayerCharac[i] = node ? node->getValue32() : 0;
 	}
 
+	// update value change from ingame config window
+	// must update it here, right before widget manager checks it
+	if (_InterfaceScaleChanged)
+	{
+		CViewRenderer::getInstance()->setInterfaceScale(_InterfaceScale);
+		_InterfaceScaleChanged = false;
+	}
+
 	CWidgetManager::getInstance()->drawViews( camera );
 
 	// flush obs
diff --git a/code/ryzom/client/src/interface_v3/interface_manager.h b/code/ryzom/client/src/interface_v3/interface_manager.h
index 6025868e5..c5c641033 100644
--- a/code/ryzom/client/src/interface_v3/interface_manager.h
+++ b/code/ryzom/client/src/interface_v3/interface_manager.h
@@ -543,6 +543,7 @@ public:
 	NLMISC::CCDBNodeLeaf *_DB_UI_DUMMY_FACTION_TYPE;
 
 	void updateDesktops( uint32 newScreenW, uint32 newScreenH );
+	void setInterfaceScale( float scale ) { _InterfaceScaleChanged = true; _InterfaceScale = scale; }
 
 private:
 
@@ -581,6 +582,8 @@ private:
 
 	uint32			_ScreenW, _ScreenH; // Change res detection
 	sint32			_LastInGameScreenW, _LastInGameScreenH; // Resolution used for last InGame interface
+	float			_InterfaceScale;
+	bool			_InterfaceScaleChanged;
 
 	// Modes
 	CInterfaceConfig::CDesktopImage	_Modes[MAX_NUM_MODES];
diff --git a/code/ryzom/client/src/main_loop_utilities.cpp b/code/ryzom/client/src/main_loop_utilities.cpp
index 415764bfa..e62c033e4 100644
--- a/code/ryzom/client/src/main_loop_utilities.cpp
+++ b/code/ryzom/client/src/main_loop_utilities.cpp
@@ -36,6 +36,7 @@
 #include "input.h"
 #include "sound_manager.h"
 #include "camera.h"
+#include "interface_v3/interface_manager.h"
 
 using namespace NLMISC;
 using namespace NL3D;
@@ -100,6 +101,9 @@ void updateFromClientCfg()
 			Driver->forceTextureResize(1);
 	}
 
+	if (ClientCfg.InterfaceScale != LastClientCfg.InterfaceScale)
+		CInterfaceManager::getInstance()->setInterfaceScale(ClientCfg.InterfaceScale);
+
 	//---------------------------------------------------
 	if (ClientCfg.WaitVBL != LastClientCfg.WaitVBL)
 	{
@@ -395,4 +399,4 @@ void updateFromClientCfg()
 	LastClientCfg = ClientCfg;
 }
 
-/* end of file */
\ No newline at end of file
+/* end of file */