Powershell command for Enable SharePoint Designer Settings for SharePoint 2010 Web Application

• Select the web app under Central Admin -> Manage web applications and on the button General Settings you find the Sharepoint Designer settings.
  
  

  • This can also be achieved with Powershell for example:
    
    $siteURL = “http://website.domain.com”
    $webApp = Get-SPWebApplication $siteURL
    $webApp.AllowDesigner = $true
    $webApp.Update()
    
    
    Edit accordingly for any setting you want to change of the four available:
    

    • 
      $webApp(or $site).AllowDesigner = $true(or $false)
      $webApp(or $site).AllowRevertFromTemplate = $true(or $false)
      $webApp(or $site).AllowMasterPageEditing = $true(or $false)
      $webApp(or $site).ShowURLStructure = $true(or $false)