From 594c9e9e3e3a856dd31c38d6498b228f5979b1e8 Mon Sep 17 00:00:00 2001
From: Kyle Spearrin <kyle.spearrin@gmail.com>
Date: Sat, 16 Feb 2019 09:15:24 -0500
Subject: [PATCH] blacklist of link rels to ignore

---
 src/Icons/Services/IconFetchingService.cs | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/Icons/Services/IconFetchingService.cs b/src/Icons/Services/IconFetchingService.cs
index ed1cc0cb39..c234079039 100644
--- a/src/Icons/Services/IconFetchingService.cs
+++ b/src/Icons/Services/IconFetchingService.cs
@@ -17,6 +17,8 @@ namespace Bit.Icons.Services
     {
         private readonly HashSet<string> _iconRels =
             new HashSet<string> { "icon", "apple-touch-icon", "shortcut icon" };
+        private readonly HashSet<string> _blacklistedRels =
+            new HashSet<string> { "preload", "image_src", "preconnect", "canonical", "alternate", "stylesheet" };
         private readonly HashSet<string> _iconExtensions =
             new HashSet<string> { ".ico", ".png", ".jpg", ".jpeg" };
 
@@ -155,7 +157,7 @@ namespace Bit.Icons.Services
                         {
                             icons.Add(new IconResult(hrefAttr.Value, sizesAttr?.Value));
                         }
-                        else
+                        else if(relAttr == null || !_blacklistedRels.Contains(relAttr.Value.ToLower()))
                         {
                             try
                             {