HTML Checking for Large Sites

Rocket Validator integrates the W3C Validator HTML checker into an automated web crawler.

The “main” role is unnecessary for element “main”.

The main landmark role is used to indicate the primary content of a document. It can be added to an element by using role="main", but instead it’s preferable to just use the <main> element. In that case, it’s unnecessary to make the main role explicit. Examples:

<div role="main">
  <!-- this is a valid way to define a main role -->

   <!-- but this is shorter and uses correct semantic HTML  -->

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