PowerShell Requires Chilkat v11.7.0+

Why a PDF Optimization Was Skipped

See more PDF Optimization Examples

Demonstrates the "skipped" array, which lists the options that were asked for but not applied, each with a reason and, where it is page-specific, the pages. An option is skipped when it is reserved for a later release (mergeFontSubsets, compactType1Fonts), when the rules of the file forbid it (objectStreams in a PDF/A-1 file), or when the content could not be parsed safely (tidyContent and coalesceContent on a page whose content stream the parser does not understand). Nothing is ever changed on a guess: an option that cannot be applied safely is skipped and reported. PowerShell

Add-Type -Path "C:\chilkat\ChilkatDotNet47-x64\ChilkatDotNet47.dll"

$success = $false

#  This example requires the Chilkat API to have been previously unlocked.
#  See Global Unlock Sample for sample code.

#  The PDF used in this example is available at grand_canyon_hiking_guide.pdf

$pdf = New-Object Chilkat.Pdf
$success = $pdf.LoadFile("qa_data/pdf/grand_canyon_hiking_guide.pdf")
if ($success -eq $false) {
    $($pdf.LastErrorText)
    exit
}

#  Ask for the two options that are reserved for a later release.
$json = New-Object Chilkat.JsonObject
$json.UpdateBool("mergeFontSubsets",$true)
$json.UpdateBool("compactType1Fonts",$true)

$jsonOut = New-Object Chilkat.JsonObject
$success = $pdf.Optimize("audit",$json,$jsonOut)
if ($success -eq $false) {
    $($pdf.LastErrorText)
    exit
}

$i = 0
$numSkipped = $jsonOut.SizeOfArray("skipped")
$("skipped: " + $numSkipped)
while ($i -lt $numSkipped) {
    $jsonOut.I = $i
    $("   " + $jsonOut.StringOf("skipped[i].option") + " - " + $jsonOut.StringOf("skipped[i].reason"))
    $i = $i + 1
}

#  A skipped option is not a failure: Optimize returns true, the other options are applied, and the
#  report says exactly what was left undone.