Do you use Markup Validation Service to check your HTML and XHTML code?
  v1.0 Posted at 17/11/2016 5:26 AM by Tiago Araujo

Markup Validation Service allows you to check your web page against the W3C recommendations. When developing web pages you want to create a clean and valid web page. It makes it easier for someone else to read and add new parts to a web page. Every web language like HTML has its own syntax it must follow in order to produce a clean and valid web page, Markup Validation Service allows you to achieve that goal. 

Go to Markup Validation Service​:

  1. Enter the URL or upload file to check ​
  2. Review the results and make changes to fix errors

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