How to import large volume of SharePoint list items from CSV to a SharePoint Online list

If you need to import a large volume of list items from CSV or Excel, for example, when importing Info Directory articles in Origami, use this PowerShell script.

# Change this URL to point to the URL where your Info Directory is located
Connect-PnPOnline -Url "https://[your_tenant]"

# Change this path to point to CSV version of the List
$CSVData = Import-CSV -path "C:\Users\adminuser\Desktop\Test.csv"

foreach ($row in $CSVData) 
  $tags = $row.Tags.Split(";");
  $tagLine = "";
     foreach ($tag in $tags) 
	    if ($tag.IndexOf(" ") -eq 0)
		    	$tag = $tag.Substring(1,$tag.Length-1);
	    $tagLine += '"'+$tag+'", ';
     $tagLine = $tagLine.Substring(0,$tagLine.Length-2);
     Add-PnPListItem -List "Info Directory" -Values @{"Title" = $row.Heading; "InfoPostAttachments"='[{"id":0,"title":"Download or Link","linkUrl":"'+$row.Link+'","openWindow":false}]'; "InfoPostBody"=$row.Description; "InfoPostTags"='['+$tagLine+']'}}

You’ll also notice we have C:\Users\adminuser\Desktop\Test.csv.
Here is what that CSV looks like: