Updates SharePoint Site Logo and Thumbnail

Summary

In SharePoint Online sites, the distinction between the Site Logo and Site Thumbnail is crucial. The site logo appears in the site header, while the site thumbnail is used in search results, site cards, file copying/moving, and other areas.

Both site logo and thumbnail are part of SharePoint branding. This post covers how to update the site logo and thumbnail across multiple SharePoint sites within a hub using PowerShell.

I used the script to update site logo and thumbnail for associated sites within a hub site which could be an intranet if there are no valid site logo and thumbnail already on the site.

Example Screenshot

Prerequisites

The user account that runs the script must have access to the SharePoint Online site.

Please update the variables before running the script

$AdminCenterURL= sharepoint centre url
$tenantUrl = tenant url
$hubSiteUrl = hub site url
$logoLocalPath : path of the logo file
$thumbnailLocalPath = path of the thumbnail file

PnP PowerShell

$AdminCenterURL="https://contoso-admin.sharepoint.com"
$tenantUrl = "https://contoso.sharepoint.com"
$hubSiteUrl = "https://contoso.sharepoint.com"

$logoLocalPath = (Get-Location).Path + '\Logo\logo white 1280x1280.png'
$thumbnailLocalPath = (Get-Location).Path + '\Logo\thumbnail white 1280x1280.png'

Connect-PnPOnline -Url $AdminCenterURL -Interactive
 
$logoLocalPath = (Get-Location).Path + '\Logo\logo white 1280x1280.png'
$thumbnailLocalPath = (Get-Location).Path + '\Logo\thumbnail white 1280x1280.png'
 
$m365Sites = Get-PnPHubSiteChild -Identity $hubSiteUrl

Start-Transcript
 
$m365Sites | ForEach-Object {
    Connect-PnPOnline -Url $_ -Interactive
    $logoFile = '__rectSitelogo__contoso-logo.png'
    $thumbnailFile = 'thumbnail.png'

    $logoRelativePath = $_.replace($tenantUrl, "") + "/SiteAssets/" + $logoFile
    $thumbnailRelativePath = $_.replace($tenantUrl, "") + "/SiteAssets/" + $logoFile

    $logoAslistItem =  Get-PnPFile -Url $logoRelativePath -AsListItem
    $thumbnailAslistItem =  Get-PnPFile -Url $thumbnailRelativePath -AsListItem
 
    if(!$logoAslistItem){
      Add-PnPFile -Path $logoLocalPath -Folder 'SiteAssets' -NewFileName $logoFile | Out-Null
    }
    
    if(!$thumbnailAslistItem){
      Add-PnPFile -Path $thumbnailLocalPath -Folder 'SiteAssets' -NewFileName $thumbnailFile | Out-Null
    }
 
    Set-PnPWebHeader -SiteLogoUrl $logoRelativePath -SiteThumbnailUrl $thumbnailRelativePath
}
Stop-Transcript

Check out the PnP PowerShell to learn more at: https://aka.ms/pnp/powershell

The way you login into PnP PowerShell has changed please read PnP Management Shell EntraID app is deleted : what should I do ?

Source Credit

Sample first appeared on Deletion of sharing links with PowerShell

Contributors

Author(s)
Reshmee Auckloo

Disclaimer

THESE SAMPLES ARE PROVIDED AS IS WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING ANY IMPLIED WARRANTIES OF FITNESS FOR A PARTICULAR PURPOSE, MERCHANTABILITY, OR NON-INFRINGEMENT.