Remove OneDrive file previous versions

1. Install PnP PowerShell:
   
   Install-Module -Name "PnP.PowerShell"
   
   
2. Connect to the OneDrive URL:
   
   Connect-PnPOnline -Url https://company-my.sharepoint.com/personal/jsmith_company_com -Interactive
   
   
3. List the file versions:
   
   Get-PnPFileVersion -Url "Documents/Documents/myfile.txt"
   
   
4. Remove all the file versions (does not remove file itself):
   
   Remove-PnPFileVersion -Url "Documents/Documents/myfile.txt" -All
   
   

Using PnP PowerShell, you can also get the size of a folder (in MB):

$Folder = Get-PnPFolder -Url "Documents/Documents" -Includes ListItemAllFields Write-host "Size of the Folder:" $([Math]::Round(($Folder.ListItemAllFields.FieldValues.SMTotalSize.LookupId/1MB),2))