From 8c9678158eaf633ee5136654465b4cd512217f68 Mon Sep 17 00:00:00 2001
From: Marco Castelluccio <mcastelluccio@mozilla.com>
Date: Tue, 7 Jun 2022 18:56:30 +0200
Subject: [PATCH] Set "presentation" role for page canvases (issue 14437)

---
 web/pdf_page_view.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/web/pdf_page_view.js b/web/pdf_page_view.js
index 3fc48091725a2..d40779f5a42c7 100644
--- a/web/pdf_page_view.js
+++ b/web/pdf_page_view.js
@@ -837,6 +837,7 @@ class PDFPageView {
 
     const viewport = this.viewport;
     const canvas = document.createElement("canvas");
+    canvas.setAttribute("role", "presentation");
 
     // Keep the canvas hidden until the first draw callback, or until drawing
     // is complete when `!this.renderingQueue`, to prevent black flickering.