From 70006555b8537a13e17fedf98e314ae29669c4f7 Mon Sep 17 00:00:00 2001
From: dwelle <5153846+dwelle@users.noreply.github.com>
Date: Thu, 25 Sep 2025 13:39:39 +0200
Subject: [PATCH] fix png detection

---
 packages/excalidraw/data/blob.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/excalidraw/data/blob.ts b/packages/excalidraw/data/blob.ts
index 27bafaf386..61c283d3e7 100644
--- a/packages/excalidraw/data/blob.ts
+++ b/packages/excalidraw/data/blob.ts
@@ -437,7 +437,7 @@ const getActualMimeTypeFromImage = (buffer: ArrayBuffer) => {
     webp: /^82 73 70 70 \d+ \d+ \d+ \d+ 87 69 66 80 86 80 56/,
   };
 
-  if (leadingBytes === bytes.png) {
+  if (leadingBytes.startsWith(bytes.png)) {
     mimeType = MIME_TYPES.png;
   } else if (leadingBytes.startsWith(bytes.jpg)) {
     mimeType = MIME_TYPES.jpg;