remove item versions

This PS script will iterate over the items and remove versions greater than the count specified.

$versionCount = 5

$items = Get-ChildItem -Path "/sitecore/content/path/to/folder" -Recurse

foreach($item in $items)
{
    if($item.Versions.Count -gt $versionCount)
    {
        Write-Output "---------------------------"
        $item.DisplayName
        $item.Versions.Count
        Remove-ItemVersion -Path $item.FullPath -Language "en-*" -Recurse -MaxRecentVersions $versionCount -Verbose
        Write-Output "---------------------------"
    }
}

note

In my experience this takes a lot longer than it should - consider revisiting for a more performant approach.