To hide the “Page -“text from the page title
Open the BlankWebPartPage.aspx in the page designer and remove the tag highlighted in green.
However, sometimes the Page Layouts link is missing. This is a common scenario:
•you have a subsite in a site collection
•the publishing feature is activated in the subsite, but not in the site collection
•you want to edit/add page layouts on the site collection level, to be used within your subsite
•when you open the site collection in SharePoint Designer, you can’t see Page Layouts in the Site Objects panel You now have 2 options: you can either activate the publishing feature in the site collection (and the Page Layouts link comes back), or you can use the All Files link and browse to the master pages and page layouts library (_catalogs > masterpage.) Either option will do, unless you really don’t want the publishing feature in the site collection