HTML Checking for Large Sites
Rocket Validator automatically checks your pages on the W3C Validator.
HTML issues tagged as character reference.
Character references must always start with an ampersand (&) and end with a semicolon (;), for example the < character can be referenced as <.
Learn more:
When was the last time you validated your whole site?
Keep your sites healthy checking for A11Y/HTML issues on an automated schedule.