My top level site has a X-master page and I want a new Y-master page for the Sub-Site which is a replica of X-master page with changes to be made. In designer I tried to copy paste the html version of X-master page from top-level site master pages folder to Sub-Site's master pages folder(in designer). But the copied X-masterpage html version is not being converted to .master page in Sub-Site master pages folder.

  • First clear the SharePoint version, which one you are using? If it is 2013 then are you copying the html master page file only? or .master file also?
    – Pradip R.
    Commented Dec 24, 2014 at 6:37
  • @Pro.. Version 2013,copied only the html file.
    – noah_dvlpr
    Commented Dec 24, 2014 at 6:49
  • Alright, then you need to edit properties of that copied file to generate the .master page file. You need to select Html Master page as its content type so .master page file will be generated automatically. Try that.
    – Pradip R.
    Commented Dec 24, 2014 at 6:53
  • will try and get back @Pro..
    – noah_dvlpr
    Commented Dec 24, 2014 at 6:57

1 Answer 1


AFAIK, the master pages and page layouts need to stay at the root site.. Even if you plan to use them in subsites.. So if you make the copy of your existing Master Page, make changes and keep it in the root-site, it will be converted to .master file.

Now in the subsite, stop master page inheritance and you can select the new masterpage you created (it should be listed in the drop-down once checked-in and published)

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