Rocket Validator automatically checks your pages on the W3C Validator.
HTML issues tagged as matching.
Quote characters used for attributes can use either single quotes (
') or double quotes (
"), and they must be properly matched, for example:
A common cause for this issue is forgetting to use the equal sign (
=), so the HTML parser wrongly believes the quote forms part of the attribute name, for example:
<p class "news">this is wrong</p>
When was the last time you validated your whole site?
Keep your sites healthy checking for A11Y/HTML issues on an automated schedule.