From 6e5700aad087a0bf1b914b6a158973d9e1ce1280 Mon Sep 17 00:00:00 2001
From: V1sionVerse <155375712+V1sionVerse@users.noreply.github.com>
Date: Mon, 16 Mar 2026 09:23:02 +0100
Subject: [PATCH 1/3] Improved performance of image_upload() in server.py

Added a cheap file size comparison before the expensive file hash comparison.
This should considerably improve average-case performance.
---
 server.py | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

diff --git a/server.py b/server.py
index 85a8964be..a8dc4a7d5 100644
--- a/server.py
+++ b/server.py
@@ -403,11 +403,19 @@ class PromptServer():
                 if overwrite is not None and (overwrite == "true" or overwrite == "1"):
                     pass
                 else:
+                    # Get uploaded file size once  
+                    image.file.seek(0, 2)  # Seek to end  
+                    uploaded_size = image.file.tell()  
+                    image.file.seek(0)  # Reset to beginning  
+                    
                     i = 1
                     while os.path.exists(filepath):
-                        if compare_image_hash(filepath, image): #compare hash to prevent saving of duplicates with same name, fix for #3465
-                            image_is_duplicate = True
-                            break
+                        # Quick size comparison first  
+                        existing_size = os.path.getsize(filepath)  
+                        if existing_size == uploaded_size:
+                            if compare_image_hash(filepath, image): #compare hash to prevent saving of duplicates with same name, fix for #3465
+                                image_is_duplicate = True
+                                break
                         filename = f"{split[0]} ({i}){split[1]}"
                         filepath = os.path.join(full_output_folder, filename)
                         i += 1

From 9ef776b689b8c9fbb89d0b730b5168402f9ecbaa Mon Sep 17 00:00:00 2001
From: V1sionVerse <155375712+V1sionVerse@users.noreply.github.com>
Date: Tue, 17 Mar 2026 16:31:12 +0100
Subject: [PATCH 2/3] Removed trailing whitespace

---
 server.py | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/server.py b/server.py
index 4d4ea600c..29252512f 100644
--- a/server.py
+++ b/server.py
@@ -405,15 +405,15 @@ class PromptServer():
                 if overwrite is not None and (overwrite == "true" or overwrite == "1"):
                     pass
                 else:
-                    # Get uploaded file size once  
-                    image.file.seek(0, 2)  # Seek to end  
-                    uploaded_size = image.file.tell()  
-                    image.file.seek(0)  # Reset to beginning  
+                    # Get uploaded file size once
+                    image.file.seek(0, 2)  # Seek to end
+                    uploaded_size = image.file.tell()
+                    image.file.seek(0)  # Reset to beginning
                     
                     i = 1
                     while os.path.exists(filepath):
-                        # Quick size comparison first  
-                        existing_size = os.path.getsize(filepath)  
+                        # Quick size comparison first
+                        existing_size = os.path.getsize(filepath)
                         if existing_size == uploaded_size:
                             if compare_image_hash(filepath, image): #compare hash to prevent saving of duplicates with same name, fix for #3465
                                 image_is_duplicate = True

From e50a36e05cd6ec2c421a8d2d2fa6ac0b848d1c12 Mon Sep 17 00:00:00 2001
From: V1sionVerse <155375712+V1sionVerse@users.noreply.github.com>
Date: Tue, 17 Mar 2026 16:36:29 +0100
Subject: [PATCH 3/3] Removed whitespace from blank line

---
 server.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/server.py b/server.py
index 29252512f..eb8e1aa56 100644
--- a/server.py
+++ b/server.py
@@ -409,7 +409,7 @@ class PromptServer():
                     image.file.seek(0, 2)  # Seek to end
                     uploaded_size = image.file.tell()
                     image.file.seek(0)  # Reset to beginning
-                    
+
                     i = 1
                     while os.path.exists(filepath):
                         # Quick size comparison first