diff --git a/model_presets.toml b/model_presets.toml
index 6db8687..98e3122 100644
--- a/model_presets.toml
+++ b/model_presets.toml
@@ -13,21 +13,7 @@ Detailed Prompting Guide:
 - Settings: Keep CFG between 5.0 and 7.0; higher values can cause color burn.
 - Sampler: Works well with DPM++ 2M SDE.
 """
-"Resolution Set" = "anime_xl"
+"Resolution Set" = "sdxl"
 "CFG Scale" = 6.0
 "Sampling Steps" = 28
 "Sampling Method" = "DPM++ 2M SDE"
-
-["flux1-dev"]
-description = "State-of-the-art general purpose model, takes natural language."
-guide = """
-Detailed Prompting Guide:
-- Style: Natural Language. Describe the scene as you would to a human.
-- Negatives: Generally doesn't require a negative prompt.
-- Settings: Works best with higher resolutions (1024+).
-- Sampler: Flux Realistic or Euler.
-"""
-"Resolution Set" = "flux_standard"
-"CFG Scale" = 3.5
-"Sampling Steps" = 20
-"Sampling Method" = "Flux Realistic"
diff --git a/resolution_presets.toml b/resolution_presets.toml
index 59f804a..bdf33cb 100644
--- a/resolution_presets.toml
+++ b/resolution_presets.toml
@@ -1,15 +1,9 @@
 # Resolution Presets
 # Format: [preset_name]
-# width and height are mandatory.
+# Values: "WidthxHeight"
 
-[anime_xl]
-square = { width = 1024, height = 1024 }
-portrait = { width = 832, height = 1216 }
-landscape = { width = 1216, height = 832 }
-widescreen = { width = 1536, height = 640 }
-
-[flux_standard]
-square = { width = 1024, height = 1024 }
-portrait = { width = 896, height = 1152 }
-landscape = { width = 1152, height = 896 }
-widescreen = { width = 1344, height = 768 }
+[sdxl]
+widescreen = "1344x768"
+landscape = "1152x896"
+square = "1024x1024"
+portrait = "896x1152"
diff --git a/tools/generate_image.py b/tools/generate_image.py
index 1464e9b..f7e670b 100644
--- a/tools/generate_image.py
+++ b/tools/generate_image.py
@@ -75,11 +75,15 @@ async def handle(args: Dict[str, Any]) -> List[Dict[str, Any]]:
         if res_set_name and res_set_name in res_cfg:
             res_set = res_cfg[res_set_name]
             if res_preset_name in res_set:
-                res_vals = res_set[res_preset_name]
-                if "Width" in label_map:
-                    payload[label_map["Width"]] = res_vals["width"]
-                if "Height" in label_map:
-                    payload[label_map["Height"]] = res_vals["height"]
+                res_val_str = res_set[res_preset_name]
+                try:
+                    w, h = map(int, res_val_str.split('x'))
+                    if "Width" in label_map:
+                        payload[label_map["Width"]] = w
+                    if "Height" in label_map:
+                        payload[label_map["Height"]] = h
+                except (ValueError, AttributeError):
+                    raise ToolError(f"Invalid resolution format for preset '{res_preset_name}': {res_val_str}. Expected 'WidthxHeight'.")
             else:
                 raise ToolError(f"Resolution preset '{res_preset_name}' not found for this model. Available: {', '.join(res_set.keys())}")
         else: