From fa09d746445fa9cf93ca427d88d6a3702453605d Mon Sep 17 00:00:00 2001
From: Classic298 <27028174+Classic298@users.noreply.github.com>
Date: Tue, 3 Nov 2026 12:59:19 +0100
Subject: [PATCH] fix: notes over 2 MB open empty and cannot be edited (#33618)

A note over 2 MB, which one pasted screenshot can reach because images are embedded in the note, opened as an empty page and discarded what you typed. Live editing of notes had its own 2 MB limit, smaller than what the server accepts in one transfer, so it refused to load such notes. That limit now matches the server's 16 MB transfer limit, so any note the server can receive opens and saves again.

Fixes #33606
---
 backend/open_webui/socket/utils.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/backend/open_webui/socket/utils.py b/backend/open_webui/socket/utils.py
index 9fd372f930..1d350d3696 100644
--- a/backend/open_webui/socket/utils.py
+++ b/backend/open_webui/socket/utils.py
@@ -247,7 +247,8 @@ class CachedRedisDict(RedisDict):
 class YdocManager:
     COMPACTION_THRESHOLD = 500
     MAX_DOCUMENTS_PER_SESSION = 20
-    MAX_DOCUMENT_SIZE = 2 * 1024 * 1024
+    # Never below what one socket message can carry, or large notes open empty
+    MAX_DOCUMENT_SIZE = 16 * 1024 * 1024
 
     def __init__(
         self,