From 390d7663b0ca381aff237cc35d88893f424931dd Mon Sep 17 00:00:00 2001
From: Thomas Rehn <271119+tremlin@users.noreply.github.com>
Date: Thu, 12 Feb 2026 01:10:22 +0100
Subject: [PATCH] fix: don't pollute model text context with encoded images
 (#20916)

---
 backend/open_webui/utils/middleware.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/backend/open_webui/utils/middleware.py b/backend/open_webui/utils/middleware.py
index a61f563667..afb0c83901 100644
--- a/backend/open_webui/utils/middleware.py
+++ b/backend/open_webui/utils/middleware.py
@@ -1455,7 +1455,9 @@ def add_file_context(messages: list, chat_id: str, user) -> list:
 
     for message, stored_message in zip(messages, stored_messages):
         files_with_urls = [
-            file for file in stored_message.get("files", []) if file.get("url")
+            file
+            for file in stored_message.get("files", [])
+            if file.get("url") and not file.get("url").startswith("data:")
         ]
         if not files_with_urls:
             continue