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Anonymous's avatar
Anonymous
Jan 29, 2018
Solved

Customizing MasterPage on SPO Publishing Site

Paging Microsoft here for an official clarification. According to this article, which is explicitly talking about (enterprise) portals, we should stay away from customizing the master page:   htt...
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SharePoint Online
  • VesaJuvonen's avatar
    VesaJuvonen
    Jan 31, 2018

    Technically custom master pages are still supported in SharePoint Online with classic experiences. This is NOT however recommended option like covered in our OFFICIAL documentation since it will block potentially new capabilities to be landing on the sites which are using this custom master page.

     

    If you are however targeting for maximum performance, using custom master page can potentially help on this, since you can potentially reduce the used placeholders, which will reduce the needed operations in both server and in client side. This would though mean that you would also lose some of the oob capabilities and any oob enhancement in the future would not be available.

     

    So - this is not really a black and white decision, but we do NOT recommend usage of custom master pages. 

jcgonzalezmartin's avatar
jcgonzalezmartin
MVP
Jan 31, 2018
Mmm...I'm definitively surprise with the conclusions and recommendations done by the PFE that IMHO are clearly wrong...only having a small knowledge of all PnP stuff should be enough for this PFE to no advising to use a custom master page. Performance problems must be on another place in this particular SPO deployment
  • VesaJuvonen's avatar
    VesaJuvonen
    Icon for Microsoft rankMicrosoft
    Jan 31, 2018

    Technically custom master pages are still supported in SharePoint Online with classic experiences. This is NOT however recommended option like covered in our OFFICIAL documentation since it will block potentially new capabilities to be landing on the sites which are using this custom master page.

     

    If you are however targeting for maximum performance, using custom master page can potentially help on this, since you can potentially reduce the used placeholders, which will reduce the needed operations in both server and in client side. This would though mean that you would also lose some of the oob capabilities and any oob enhancement in the future would not be available.

     

    So - this is not really a black and white decision, but we do NOT recommend usage of custom master pages. 

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