ByteScout Premium Suite – VB.NET – Remove empty pages with pdf extractor sdk

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ByteScout Premium Suite – VB.NET – Remove empty pages with pdf extractor sdk

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ByteScout-Premium-Suite-VB-NET-Remove-empty-pages-with-pdf-extractor-sdk.pdf

How to remove empty pages with pdf extractor sdk in VB.NET and ByteScout Premium Suite

Step-by-step tutorial on how to remove empty pages with pdf extractor sdk in VB.NET

Source code documentation samples give simple and easy method to install a needed feature into your application. ByteScout Premium Suite is the set that includes 12 SDK products from ByteScout including tools and components for PDF, barcodes, spreadsheets, screen video recording and you can use it to remove empty pages with pdf extractor sdk with VB.NET.

Want to save time? You will save a lot of time on writing and testing code as you may just take the VB.NET code from ByteScout Premium Suite for remove empty pages with pdf extractor sdk below and use it in your application. Just copy and paste the code into your VB.NET application’s code and follow the instructions. Want to see how it works with your data then code testing will allow the function to be tested and work properly.

ByteScout provides the free trial version of ByteScout Premium Suite along with the documentation and source code samples.

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Module1.vb

      Imports System.IO
Imports Bytescout.PDFExtractor

''' <summary>
''' The example demonstrates detection of empty pages, splitting the document to separate 
''' pages excluding empty ones, then combine parts back to a single document.
''' </summary>
Module Module1

    Dim InputFile = ".\sample.pdf"
    Dim OutputFile = ".\result.pdf"
    Dim TempFolder = ".\temp"

    Sub Main()

        ' Create and setup Bytescout.PDFExtractor.TextExtractor instance
        Dim extractor As New TextExtractor("demo", "demo")
        
        ' Load PDF document
        extractor.LoadDocumentFromFile(InputFile)

        ' List to keep non-empty page numbers
        Dim nonEmptyPages = New List(Of String)()

        ' Iterate through pages 
        For pageIndex = 0 To extractor.GetPageCount() - 1
            ' Extract page text
            Dim pageText = extractor.GetTextFromPage(pageIndex)
            ' If extracted text is not empty keep the page number
            If pageText.Length > 0 Then
                nonEmptyPages.Add((pageIndex + 1).ToString())
            End If
        Next
        
        ' Cleanup
        extractor.Dispose()


        ' Form comma-separated list of page numbers to split ("1,3,5")
        Dim ranges As String = String.Join(",", nonEmptyPages)

        ' Create Bytescout.PDFExtractor.DocumentSplitter instance
        Dim splitter = new DocumentSplitter("demo", "demo")
        splitter.OptimizeSplittedDocuments = true

        ' Split document by non-empty in temp folder
        Dim parts = splitter.Split(InputFile, ranges, TempFolder)

        ' Cleanup
        splitter.Dispose()

        
        ' Create Bytescout.PDFExtractor.DocumentMerger instance
        Dim merger = New DocumentMerger("demo", "demo")

        ' Merge parts
        merger.Merge(parts, OutputFile)

        ' Cleanup
        merger.Dispose()

        ' Delete temp folder
        Directory.Delete(TempFolder, true)
        

        ' Open the result file in default PDF viewer (for demo purposes)
        Process.Start(OutputFile)

    End Sub

End Module