Python Requires Chilkat v11.7.0+

Why a PDF Optimization Was Skipped

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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. Chilkat2-Python

import sys
import chilkat2

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 = chilkat2.Pdf()
success = pdf.LoadFile("qa_data/pdf/grand_canyon_hiking_guide.pdf")
if (success == False):
    print(pdf.LastErrorText)
    sys.exit()

# Ask for the two options that are reserved for a later release.
json = chilkat2.JsonObject()
json.UpdateBool("mergeFontSubsets",True)
json.UpdateBool("compactType1Fonts",True)

jsonOut = chilkat2.JsonObject()
success = pdf.Optimize("audit",json,jsonOut)
if (success == False):
    print(pdf.LastErrorText)
    sys.exit()

i = 0
numSkipped = jsonOut.SizeOfArray("skipped")
print("skipped: " + str(numSkipped))
while i < numSkipped :
    jsonOut.I = i
    print("   " + 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.