diff --git a/assets/example.png b/assets/example.png
new file mode 100644
index 0000000..14817f0
Binary files /dev/null and b/assets/example.png differ
diff --git a/example/Snap Area example.json b/example/Snap Area example.json
new file mode 100644
index 0000000..ba2b875
--- /dev/null
+++ b/example/Snap Area example.json	
@@ -0,0 +1,206 @@
+{
+  "last_node_id": 5,
+  "last_link_id": 3,
+  "nodes": [
+    {
+      "id": 2,
+      "type": "LoadImage",
+      "pos": {
+        "0": 890,
+        "1": 640
+      },
+      "size": [
+        320,
+        340
+      ],
+      "flags": {},
+      "order": 0,
+      "mode": 0,
+      "inputs": [],
+      "outputs": [
+        {
+          "name": "IMAGE",
+          "type": "IMAGE",
+          "links": [
+            1
+          ],
+          "shape": 3,
+          "label": "图像"
+        },
+        {
+          "name": "MASK",
+          "type": "MASK",
+          "links": null,
+          "shape": 3,
+          "label": "遮罩"
+        }
+      ],
+      "properties": {
+        "Node name for S&R": "LoadImage"
+      },
+      "widgets_values": [
+        "ComfyUI_temp_omgsc_00002_.png",
+        "image"
+      ]
+    },
+    {
+      "id": 1,
+      "type": "AreaCalculator",
+      "pos": {
+        "0": 1230,
+        "1": 640
+      },
+      "size": [
+        210,
+        80
+      ],
+      "flags": {},
+      "order": 1,
+      "mode": 0,
+      "inputs": [
+        {
+          "name": "image",
+          "type": "IMAGE",
+          "link": 1,
+          "label": "image"
+        }
+      ],
+      "outputs": [
+        {
+          "name": "面积",
+          "type": "INT",
+          "links": [
+            2
+          ],
+          "shape": 3,
+          "label": "面积",
+          "slot_index": 0
+        },
+        {
+          "name": "占比%",
+          "type": "INT",
+          "links": [
+            3
+          ],
+          "shape": 3,
+          "label": "占比%",
+          "slot_index": 1
+        }
+      ],
+      "properties": {
+        "Node name for S&R": "AreaCalculator"
+      },
+      "widgets_values": [
+        "black"
+      ]
+    },
+    {
+      "id": 4,
+      "type": "Display Int (rgthree)",
+      "pos": {
+        "0": 1500,
+        "1": 580
+      },
+      "size": [
+        315,
+        76
+      ],
+      "flags": {},
+      "order": 2,
+      "mode": 0,
+      "inputs": [
+        {
+          "name": "input",
+          "type": "INT",
+          "link": 2,
+          "widget": {
+            "name": "input"
+          },
+          "label": "输入",
+          "dir": 3
+        }
+      ],
+      "outputs": [],
+      "properties": {
+        "Node name for S&R": "Display Int (rgthree)"
+      },
+      "widgets_values": [
+        0,
+        ""
+      ]
+    },
+    {
+      "id": 5,
+      "type": "Display Int (rgthree)",
+      "pos": {
+        "0": 1500,
+        "1": 720
+      },
+      "size": [
+        315,
+        76
+      ],
+      "flags": {},
+      "order": 3,
+      "mode": 0,
+      "inputs": [
+        {
+          "name": "input",
+          "type": "INT",
+          "link": 3,
+          "widget": {
+            "name": "input"
+          },
+          "label": "输入",
+          "dir": 3
+        }
+      ],
+      "outputs": [],
+      "properties": {
+        "Node name for S&R": "Display Int (rgthree)"
+      },
+      "widgets_values": [
+        0,
+        ""
+      ]
+    }
+  ],
+  "links": [
+    [
+      1,
+      2,
+      0,
+      1,
+      0,
+      "IMAGE"
+    ],
+    [
+      2,
+      1,
+      0,
+      4,
+      0,
+      "INT"
+    ],
+    [
+      3,
+      1,
+      1,
+      5,
+      0,
+      "INT"
+    ]
+  ],
+  "groups": [],
+  "config": {},
+  "extra": {
+    "ds": {
+      "scale": 2.143588810000002,
+      "offset": [
+        -794.0233330383926,
+        -449.2264101434639
+      ]
+    }
+  },
+  "version": 0.4
+}
\ No newline at end of file