Hello, My blog is hosted on HubSpot CMS. My blog url is like http://blog.example.com. There are some duplicate content issues for tag pages. e.g. http://blog.example.com/blog/?Tag=Quality http://blog.example.com/blog/?Tag=HIE HubSpot CMS is incompetent for Canonical tag, hence I have tried to block these pages into robots.txt: User-agent: * Disallow: /blog/?Tag=Quality Disallow: /blog/?Tag=HIE But it is not giving any positive result. Please tell me how can get a rid of these pages? Thanks in advance for your help.
Why you need to block these pages? Just let them as they are. Google knows better what they are and if they are duplicate