diff --git a/__init__.py b/__init__.py
index e5a4f74..e1d6708 100644
--- a/__init__.py
+++ b/__init__.py
@@ -5,6 +5,7 @@ from .py.node.const import *
 from .py.node.format import *
 from .py.node.preset import *
 from .py.node.weight import *
+from .py.node.replace import *
 from .py.server import *
 from .py.preset import PresetManager
 
@@ -19,6 +20,7 @@ NODE_CLASS_MAPPINGS = {
     "PromptUtilitiesConstStringMultiLine": PromptUtilitiesConstStringMultiLine,
     "PromptUtilitiesPromptWeight": PromptUtilitiesPromptWeight,
     "PromptUtilitiesRoundPromptWeight": PromptUtilitiesRoundPromptWeight,
+    "PromptUtilitiesReplaceOrInsertTag": PromptUtilitiesReplaceOrInsertTag,
 }
 
 NODE_DISPLAY_NAME_MAPPINGS = {
@@ -32,6 +34,7 @@ NODE_DISPLAY_NAME_MAPPINGS = {
     "PromptUtilitiesConstStringMultiLine": "Const String (multi line)",
     "PromptUtilitiesPromptWeight": "Prompt Weight",
     "PromptUtilitiesRoundPromptWeight": "Round Prompt Weight",
+    "PromptUtilitiesReplaceOrInsertTag": "Replace or Insert Tag",
 }
 
 WEB_DIRECTORY = "./js"
diff --git a/py/node/replace.py b/py/node/replace.py
new file mode 100644
index 0000000..ae98ae9
--- /dev/null
+++ b/py/node/replace.py
@@ -0,0 +1,57 @@
+from .base import BaseNode
+
+import re
+from comfy.sd1_clip import token_weights
+
+
+class PromptUtilitiesReplaceOrInsertTag(BaseNode):
+    @classmethod
+    def INPUT_TYPES(s):
+        return {
+            "required": {
+                "text": (
+                    "STRING",
+                    {"multiline": True, "default": "", "forceInput": True},
+                ),
+                "pattern": ("STRING", {"default": "", "multiline": False}),
+                "value": ("STRING", {"default": "", "multiline": False}),
+                "mode": (["replace", "insert"],),
+                "inherit_weight": ("BOOLEAN", {"default": False}),
+            },
+        }
+
+    RETURN_TYPES = ("STRING",)
+
+    FUNCTION = "replace_tag"
+
+    def replace_tag(self, text, pattern, value, mode, inherit_weight):
+        text = text.replace("\(", "{[{[")
+        text = text.replace("\)", "}]}]")
+        weights = token_weights(text, 1.0)
+        tags = []
+        for t, weight in weights:
+            for tag in t.split(","):
+                tag = tag.strip()
+                if tag:
+                    tags.append((tag, weight))
+        tags2 = []
+        for i, v in enumerate(tags):
+            if re.match(pattern, v[0]):
+                w = 1.0
+                if inherit_weight:
+                    w = v[1]
+                if mode == "insert":
+                    tags2.append(v)
+                tags2.append((value, w))
+            else:
+                tags2.append(v)
+        result = []
+        for tag, weight in tags2:
+            if weight == 1.0:
+                result.append(tag)
+            else:
+                result.append(f"({tag}:{weight})")
+        s = ", ".join(result)
+        s = s.replace("{[{[", "\(")
+        s = s.replace("}]}]", "\)")
+        return (s,)