Powwershell script that will extract Active Directory user Thumbnail Images to files. Output directory is the only parameter. Will use your local/default domain controller & domain.

Export-ADUserImages.ps1

################################################################################
#                     AD PROFILE PICTURE EXTRACTOR                             #
################################################################################
# THIS SCRIPT WILL GET THE thumbnailPhoto ATTRIBUTE FROM ACTIVE DIRECTORY USER #
# AND SAVE TO JPEG                                                             #
#                                                                              #
# AUTHOR: TIM CALDWELL                                                         #
# DATE: 21/02/2014                                                             #
################################################################################
param(
    [Parameter(
        Mandatory=$true,
        HelpMessage="Output path of the resulting Jpeg Files",
        Position=1
    )]
    [string]$savePath #This parameter is required to run the script
)

$savePath = $savePath.TrimEnd('"\')+'\' #ensures the last char is a backslash

#Load our image converter
[void] [System.Reflection.Assembly]::LoadWithPartialName("System.Drawing")
Import-Module "ActiveDirectory"

$imageConverter = New-Object System.Drawing.ImageConverter

#Retrieve all enabled users that have a thumbnail photo image
$allUsers = Get-ADUser -Filter {enabled -eq $true -and thumbnailPhoto -like '*'} -Properties thumbnailPhoto | Select samAccountName,thumbnailPhoto

#Convert each thumbnail photo from byte array to jpeg image and save
ForEach($user in $allUsers) {
    $samAccountName = $user.samAccountName.Trim()
    $thumbnailPhoto = $user.thumbnailPhoto
	if ($thumbnailPhoto -ne $null)
	{
	    $outFile = $savePath + $samAccountName + '.jpg'
	    #$outFile
	    $Image = [System.Drawing.Image]$imageConverter.ConvertFrom([Byte[]]$thumbnailPhoto)
	    $Image.Save($outFile,[System.Drawing.Imaging.ImageFormat]::Jpeg)
	}
}