Changing logo on all SharePoint Online site via PowerShell

Question

Is it possible to create a script that will loop through all the sites in a site tenancy to replace the logo that is attached to each one. I'm unable to locate any useful commands in the SPO Commandlet set.

Answer 1

You can use below snippet to set the site logo

$ClientContext.Web.SiteLogoUrl = "http://logourl";
$ClientContext.Web.Update()
$ClientContext.ExecuteQuery()

Below snippet can be used to get all sites

$SecurePassword = ConvertTo-SecureString "PassWord" -AsPlainText -Force 
$Cred = New-Object Microsoft.SharePoint.Client.SharePointOnlineCredentials("UserName", $SecurePassword) 
$ClientContext = New-Object Microsoft.SharePoint.Client.ClientContext("SiteUrl") 
$ClientContext.Credentials = $Cred

$Web = $ClientContext.Web 
$ClientContext.Load($Web) 
$ClientContext.ExecuteQuery() 

function Get-SPOAllWebs{ 
    Param( 
    [Microsoft.SharePoint.Client.ClientContext]$ClientContext, 
    [Microsoft.SharePoint.Client.Web]$Root 
    ) 

    $Webs = $Root.Webs 
    $ClientContext.Load($Webs) 
    $ClientContext.ExecuteQuery() 

    ForEach ($w in $Webs) 
    { 
        #Logic to update SITELOGO
        Get-SPOAllWebs -RootWeb $w -Context $ClientContext
    } 
}

Answer 2

this one works for me: https://github.com/t1llo/change_logo_SharePointOnline-PS

#Setup the context
$Ctx = New-Object Microsoft.SharePoint.Client.ClientContext($SiteUrl)
$Ctx.Credentials = $Credentials

#Get the Root web
$Web = $Ctx.Web
$Ctx.Load($Web)
$Ctx.ExecuteQuery()

#Function to change Logo for the given web
Function Update-Logo($Web)
{
    #Update Logo
    $Web.SiteLogoUrl = $LogoURL
    $Web.Update()
    $Ctx.ExecuteQuery()

full code on https://github.com/t1llo/change_logo_SharePointOnline-PS