clipboard2png.ps1

Param(
    [Parameter(Mandatory, Position = 0, HelpMessage = "Path to save PNG file")] [string] $SavePath 
)


if (-not [System.IO.Directory]::Exists([System.IO.Path]::GetDirectoryName($SavePath))) {
    Throw "Save directory doesn't exist."
}


Add-Type -AssemblyName System.Windows.Forms


if ([System.Windows.Forms.Clipboard]::ContainsData([System.Windows.Forms.DataFormats]::Bitmap)) {
    if ([System.IO.File]::Exists($SavePath)) {
        $Confirmation = Read-Host "The save path already exists. Are you sure that you want to override the existing file? [y/n]"
        if (-not ($Confirmation.ToLower() -eq "y")) {
            Write-Host "Abort"
            Exit
        }
    }

    try {
        $image = [System.Windows.Forms.Clipboard]::GetData([System.Windows.Forms.DataFormats]::Bitmap)
        $image.Save($SavePath, [System.Drawing.Imaging.ImageFormat]::Png)
        [System.Windows.Forms.Clipboard]::Clear()
    } catch {
        Write-Error $_.Exception.Message
    } finally {
        $image.Dispose()
    }
} else {
    Write-Warning "No image found in the clipboard."
}