diff -r c044304dbac2 -r b0777ef92b9f web-accessibility.rst
--- a/web-accessibility.rst	Sun Dec 13 23:30:17 2015 +0200
+++ b/web-accessibility.rst	Sun Dec 13 23:45:48 2015 +0200
@@ -12,4 +12,5 @@
 
   http://wave.webaim.org
     On-line checker. Report accessibility errors and warnings.
-
+  https://validator.w3.org/
+    Check the markup (HTML, XHTML, …) of Web documents.