Quick and dirty code to pull width and height from SVG files and compute how much to scale them

gistfile1.ps1

$maxsize = 96
Get-ChildItem "*.svg" | ForEach-Object {
  $xml = [xml](Get-Content $_.FullName)
  $origWidth = [float][string]($xml | Select-Xml -XPath "/*/@width")
  $origHeight = [float][string]($xml | Select-Xml -XPath "/*/@height")

  $widthRatio = $maxsize / $origWidth
  $heightRatio = $maxsize / $origHeight

  $largerRatio = ($widthRatio,$heightRatio | Measure -Min).Minimum

  $newWidth = $origWidth * $largerRatio
  $newHeight = $origHeight * $largerRatio

  New-Object psobject -Property @{
    Name = $_.Name
    OrigWidth = $origWidth
    OrigHeight = $origHeight
    NewWidth = $newWidth
    NewHeight = $newHeight
  }
} | Format-Table