diff --git a/leenkx/blender/lnx/material/cycles.py b/leenkx/blender/lnx/material/cycles.py
index f5c495f..f74fcf8 100644
--- a/leenkx/blender/lnx/material/cycles.py
+++ b/leenkx/blender/lnx/material/cycles.py
@@ -53,9 +53,112 @@ else:
 # Particle info export
 particle_info: Dict[str, bool] = {}
 
+texture_resize_cache = {}
+
 state: Optional[ParserState]
 
 
+def resize_texture_if_needed(image: bpy.types.Image, filepath: str, max_size: int) -> str:
+    """
+    Resize texture if it exceeds max_size. Returns path to resized texture or original.
+    Caches results to avoid re-processing unchanged textures.
+    """
+    if max_size <= 0:
+        return filepath
+    
+    if image.size[0] <= max_size and image.size[1] <= max_size:
+        return filepath
+    
+    wrd = bpy.data.worlds['Lnx']
+    texture_quality = wrd.lnx_texture_quality
+    
+    cache_key = (filepath, max_size, texture_quality, os.path.getmtime(filepath) if os.path.exists(filepath) else 0)
+    if cache_key in _texture_resize_cache:
+        cached_path = _texture_resize_cache[cache_key]
+        if os.path.exists(cached_path):
+            return cached_path
+    
+    width, height = image.size[0], image.size[1]
+    if width > height:
+        new_width = max_size
+        new_height = int((height / width) * max_size)
+    else:
+        new_height = max_size
+        new_width = int((width / height) * max_size)
+    
+    build_dir = lnx.utils.get_fp_build()
+    resized_dir = os.path.join(build_dir, 'compiled', 'Assets', 'unpacked')
+    os.makedirs(resized_dir, exist_ok=True)
+    
+    basename = os.path.basename(filepath)
+    name, ext = os.path.splitext(basename)
+    quality_suffix = f"q{int(texture_quality * 100)}"
+    resized_path = os.path.join(resized_dir, f"{name}_{max_size}px_{quality_suffix}{ext}")
+    
+    if os.path.exists(resized_path):
+        src_mtime = os.path.getmtime(filepath)
+        dst_mtime = os.path.getmtime(resized_path)
+        if dst_mtime >= src_mtime:
+            _texture_resize_cache[cache_key] = resized_path
+            return resized_path
+    
+    try:
+        ffmpeg_path = lnx.utils.get_ffmpeg_path()
+        
+        if ffmpeg_path is None or ffmpeg_path == '':
+            print(f"[Texture Optimizer] WARNING: FFmpeg not found. Please set FFmpeg path in addon preferences.")
+            print(f"[Texture Optimizer] Skipping resize for: {basename}")
+            return filepath
+        
+        file_ext = os.path.splitext(filepath)[1].lower().lstrip('.')
+        
+        cmd = [
+            ffmpeg_path,
+            '-y', 
+            '-i', filepath,
+            '-vf', f'scale={new_width}:{new_height}:flags=lanczos',
+        ]
+        
+        if file_ext in ('png', 'tga', 'bmp'):
+            compression_level = round((1.0 - texture_quality) * 9)
+            cmd.extend(['-compression_level', str(compression_level)])
+        else:
+            qscale = round(2 + (1.0 - texture_quality) * 29)
+            cmd.extend(['-q:v', str(qscale)])
+        
+        cmd.append(resized_path)
+        
+        startupinfo = None
+        if os.name == 'nt': 
+            startupinfo = subprocess.STARTUPINFO()
+            startupinfo.dwFlags |= subprocess.STARTF_USESHOWWINDOW
+            startupinfo.wShowWindow = subprocess.SW_HIDE
+        
+        result = subprocess.run(
+            cmd,
+            stdout=subprocess.PIPE,
+            stderr=subprocess.PIPE,
+            startupinfo=startupinfo,
+            timeout=60
+        )
+        
+        if result.returncode == 0 and os.path.exists(resized_path):
+            print(f"[Texture Optimizer] Resized: {basename} {width}x{height} -> {new_width}x{new_height}")
+            _texture_resize_cache[cache_key] = resized_path
+            return resized_path
+        else:
+            error_msg = result.stderr.decode('utf-8', errors='ignore') if result.stderr else 'Unknown error'
+            print(f"[Texture Optimizer] WARNING: FFmpeg failed to resize {basename}: {error_msg}")
+            return filepath
+            
+    except subprocess.TimeoutExpired:
+        print(f"[Texture Optimizer] WARNING: FFmpeg timeout while resizing {basename}")
+        return filepath
+    except Exception as e:
+        print(f"[Texture Optimizer] WARNING: Failed to resize {basename}: {e}")
+        return filepath
+
+
 def parse(nodes, con: ShaderContext,
           vert: Shader, frag: Shader, geom: Shader, tesc: Shader, tese: Shader,
           parse_surface=True, parse_opacity=True, parse_displacement=True, basecol_only=False):
@@ -897,6 +1000,11 @@ def make_texture(
                 lnx.utils.convert_image(image, converted_path, file_format=fmt)
             lnx.assets.add(converted_path)
         else:
+            wrd = bpy.data.worlds['Lnx']
+            max_size = int(wrd.lnx_max_texture_size)
+            if max_size > 0 and image is not None:
+                filepath = resize_texture_if_needed(image, filepath, max_size)
+            
             # Link image path to assets
             # TODO: Khamake converts .PNG to .jpg? Convert ext to lowercase on windows
             if lnx.utils.get_os() == 'win':
diff --git a/leenkx/blender/lnx/props.py b/leenkx/blender/lnx/props.py
index 1c3ce11..87afd2b 100644
--- a/leenkx/blender/lnx/props.py
+++ b/leenkx/blender/lnx/props.py
@@ -283,6 +283,21 @@ def init_properties():
     )
     bpy.types.World.lnx_texture_quality = FloatProperty(name="Texture Quality", default=1.0, min=0.0, max=1.0, subtype='FACTOR', update=assets.invalidate_compiler_cache)
     bpy.types.World.lnx_sound_quality = FloatProperty(name="Sound Quality", default=0.9, min=0.0, max=1.0, subtype='FACTOR', update=assets.invalidate_compiler_cache)
+    bpy.types.World.lnx_max_texture_size = EnumProperty(
+        name="Max Texture Size",
+        description="Maximum texture resolution for runtime. Larger textures will be automatically downscaled.",
+        items=[
+            ('0', 'Unlimited', 'No size limit (may cause WebGL texture unit errors with many textures)'),
+            ('256', '0.25K (256px)', 'Maximum 0.25K resolution - Best for mobile'),
+            ('512', '0.5K (512px)', 'Maximum 0.5K resolution - Best for mobile'),
+            ('1024', '1K (1024px)', 'Maximum 1K resolution - Best for mobile'),
+            ('2048', '2K (2048px)', 'Maximum 2K resolution - Recommended for WebGL'),
+            ('4096', '4K (4096px)', 'Maximum 4K resolution - Desktop only'),
+            ('8192', '8K (8192px)', 'Maximum 8K resolution - High-end desktop only'),
+        ],
+        default='2048',
+        update=assets.invalidate_compiler_cache
+    )
     bpy.types.World.lnx_copy_override = BoolProperty(name="Copy Override", description="Overrides any existing files when copying", default=False, update=assets.invalidate_compiled_data)
     bpy.types.World.lnx_minimize = BoolProperty(name="Binary Scene Data", description="Export scene data in binary", default=True, update=assets.invalidate_compiled_data)
     bpy.types.World.lnx_minify_js = BoolProperty(name="Minify JS", description="Minimize JavaScript output when publishing", default=True)
diff --git a/leenkx/blender/lnx/props_ui.py b/leenkx/blender/lnx/props_ui.py
index 8e2d7c5..1c0c555 100644
--- a/leenkx/blender/lnx/props_ui.py
+++ b/leenkx/blender/lnx/props_ui.py
@@ -1220,6 +1220,12 @@ class LNX_PT_ProjectFlagsPanel(bpy.types.Panel):
         row.prop(wrd, 'lnx_canvas_img_scaling_quality', expand=True)
         col.prop(wrd, 'lnx_texture_quality')
         col.prop(wrd, 'lnx_sound_quality')
+        
+        col = column_with_heading(layout, 'Texture Optimization')
+        col.prop(wrd, 'lnx_max_texture_size')
+        if wrd.lnx_max_texture_size != '0':
+            box = col.box()
+            box.label(text=f"Textures larger than {wrd.lnx_max_texture_size}px will be automatically downscaled on export", icon='INFO')
 
         col = column_with_heading(layout, 'External Assets')
         col.prop(wrd, 'lnx_copy_override')