From c56a109a21056c4fb7dbe4c3371a88347b14b7d5 Mon Sep 17 00:00:00 2001
From: TheMorc <r.gracik@gmail.com>
Date: Wed, 23 Aug 2023 10:49:06 +0200
Subject: [PATCH] fix ImageComponent embeds due to extensions being mixedcase

---
 src/util.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/util.cpp b/src/util.cpp
index 8d21ff45..ae948ea0 100644
--- a/src/util.cpp
+++ b/src/util.cpp
@@ -160,7 +160,10 @@ std::string GetExtension(std::string url) {
 }
 
 bool IsURLViewableImage(const std::string &url) {
-    const auto ext = GetExtension(url);
+    std::string lw_url = url;
+    std::transform(lw_url.begin(), lw_url.end(), lw_url.begin(), ::tolower);
+
+    const auto ext = GetExtension(lw_url);
     static const char *exts[] = { ".jpeg",
                                   ".jpg",
                                   ".png", nullptr };