diff --git a/modules/generation_parameters_copypaste.py b/modules/generation_parameters_copypaste.py
index 620aa6069975006d3554f864f2b38a59b3ec0f44..593d99ef553db9fe99280c4125a296aa78963f6e 100644
--- a/modules/generation_parameters_copypaste.py
+++ b/modules/generation_parameters_copypaste.py
@@ -7,7 +7,7 @@ from pathlib import Path
 
 import gradio as gr
 from modules.shared import script_path
-from modules import shared, ui_tempdir
+from modules import shared, ui_tempdir, script_callbacks
 import tempfile
 from PIL import Image
 
@@ -298,6 +298,7 @@ def connect_paste(button, paste_fields, input_comp, jsfunc=None):
                     prompt = file.read()
 
         params = parse_generation_parameters(prompt)
+        script_callbacks.infotext_pasted_callback(prompt, params)
         res = []
 
         for output, key in paste_fields:
diff --git a/modules/script_callbacks.py b/modules/script_callbacks.py
index 608c5300ecf180bc9d787f57046c58d5e6d4e60c..a9e192369e2018446c52239bb29c26126bd47717 100644
--- a/modules/script_callbacks.py
+++ b/modules/script_callbacks.py
@@ -2,7 +2,7 @@ import sys
 import traceback
 from collections import namedtuple
 import inspect
-from typing import Optional
+from typing import Optional, Dict, Any
 
 from fastapi import FastAPI
 from gradio import Blocks
@@ -71,6 +71,7 @@ callback_map = dict(
     callbacks_before_component=[],
     callbacks_after_component=[],
     callbacks_image_grid=[],
+    callbacks_infotext_pasted=[],
     callbacks_script_unloaded=[],
 )
 
@@ -172,6 +173,14 @@ def image_grid_callback(params: ImageGridLoopParams):
             report_exception(c, 'image_grid')
 
 
+def infotext_pasted_callback(infotext: str, params: Dict[str, Any]):
+    for c in callback_map['callbacks_infotext_pasted']:
+        try:
+            c.callback(infotext, params)
+        except Exception:
+            report_exception(c, 'infotext_pasted')
+
+
 def script_unloaded_callback():
     for c in reversed(callback_map['callbacks_script_unloaded']):
         try:
@@ -290,6 +299,15 @@ def on_image_grid(callback):
     add_callback(callback_map['callbacks_image_grid'], callback)
 
 
+def on_infotext_pasted(callback):
+    """register a function to be called before applying an infotext.
+    The callback is called with two arguments:
+       - infotext: str - raw infotext.
+       - result: Dict[str, any] - parsed infotext parameters.
+    """
+    add_callback(callback_map['callbacks_infotext_pasted'], callback)
+
+
 def on_script_unloaded(callback):
     """register a function to be called before the script is unloaded. Any hooks/hijacks/monkeying about that
     the script did should be reverted here"""