PowerShell Requires Chilkat v11.7.0+

Extract PDF Text to a StringBuilder and Save to a File

See more PDF Text Extraction Examples

Demonstrates ExtractTextSb, which writes the extracted text to a StringBuilder instead of returning it as a JSON string. Use it for large documents. The JSON output still receives the quality report. 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 long_report.pdf

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

$("Number of pages: " + $pdf.NumPages)

#  ExtractTextSb takes the same operation and options as ExtractText, but the text
#  goes to a StringBuilder.  This avoids building a very large JSON string for
#  documents with many pages.
$json = New-Object Chilkat.JsonObject
$sbText = New-Object Chilkat.StringBuilder
$jsonOut = New-Object Chilkat.JsonObject

$success = $pdf.ExtractTextSb("text",$json,$sbText,$jsonOut)
if ($success -eq $false) {
    $($pdf.LastErrorText)
    exit
}

$("Extracted " + $sbText.Length + " characters.")

#  Save the text to a file.
$success = $sbText.WriteFile("qa_output/long_report.txt","utf-8",$false)
if ($success -eq $false) {
    $($sbText.LastErrorText)
    exit
}

#  The JSON output does not contain the text, but it still has the quality report.
$("Quality: " + $jsonOut.StringOf("quality.rating"))
$("Pages with no text (need OCR): [" + $jsonOut.StringOf("quality.pagesNeedingOcr") + "]")

#  Sample output:

#  Number of pages: 3
#  Extracted 4522 characters.
#  Quality: good
#  Pages with no text (need OCR): []