Converts PDF to 300 dpi DJVU. Requires pdf2djvu => https://code.google.com/p/pdf2djvu/

pdf2djvu.ps1

# convert pdf to djvu
# accepts a .pdf input, outputs a 300dpi .djvu, returns djvu full name
# requires pdf2djvu

param(
    [Parameter(Mandatory=$true,ValueFromPipeline=$true,Position=0)]
    [ValidateScript({[System.IO.Path]::GetExtension($_) -eq ".pdf"})]
	[string]$in,
    [Parameter(Mandatory=$false,ValueFromPipeline=$true,Position=1)]
    [ValidateScript({[System.IO.Path]::GetExtension($_) -eq ".djvu"})]
	[string]$out
)

process 
{

    $file = new-object System.IO.FileInfo($in)
    $input = ('"{0}"' -f $file.FullName)
    $output = $out
    if (!$output) {
        $output = ('{0}\{1}.djvu' -f $file.DirectoryName, $file.BaseName)
    }
	$args = "-o `"$output`" -d 300 --words --no-metadata --no-hyperlinks --no-outline --pageid-template={page}.djvu --crop-text $input"
    write-host $args
	start-process pdf2djvu $args -wait -NoNewWindow
    return $output
}