From f905ad772ef577879c5abb3a2e1e137986b45eee Mon Sep 17 00:00:00 2001
From: Offerel <14041522+Offerel@users.noreply.github.com>
Date: Fri, 31 Dec 2021 13:14:15 +0100
Subject: Check data URI (#4098)

* Check data URI
---
 p/scripts/main.js | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

(limited to 'p/scripts/main.js')

diff --git a/p/scripts/main.js b/p/scripts/main.js
index 3093d1da8..21420872f 100644
--- a/p/scripts/main.js
+++ b/p/scripts/main.js
@@ -1661,8 +1661,11 @@ function faviconNbUnread(n) {
 				ctx.fillText(text, 0, canvas.height - 1);
 			}
 			link.href = canvas.toDataURL('image/png');
-			document.querySelector('link[rel~=icon]').remove();
-			document.head.appendChild(link);
+			// Check if data URI has generated a real favicon and if not, fallback to standard icon
+			if (link.href.length > 180) {
+				document.querySelector('link[rel~=icon]').remove();
+				document.head.appendChild(link);
+			}
 		};
 		img.src = '../favicon.ico';
 	}
-- 
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