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1005969-How to convert PDF to PDF/A‑2A documents
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‎PDF Conformance/Convert-PDF-to-PDFA2A-conformance-document/.NET Framework/Convert-PDF-to-PDFA2A-conformance-document.slnx‎

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<Solution>
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<Project Path="Convert-PDF-to-PDFA2A-conformance-document/Convert-PDF-to-PDFA2A-conformance-document.csproj" Id="5a06001d-287a-4b5f-a79e-52ad2871bf43" />
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</Solution>

‎PDF Conformance/Convert-PDF-to-PDFA2A-conformance-document/.NET Framework/Convert-PDF-to-PDFA2A-conformance-document/App.config‎

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<?xml version="1.0" encoding="utf-8" ?>
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<configuration>
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<startup>
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<supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.7.2" />
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</startup>
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</configuration>

‎PDF Conformance/Convert-PDF-to-PDFA2A-conformance-document/.NET Framework/Convert-PDF-to-PDFA2A-conformance-document/Convert-PDF-to-PDFA2A-conformance-document.csproj‎

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<?xml version="1.0" encoding="utf-8"?>
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<Project ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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<Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
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<PropertyGroup>
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<Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
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<Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
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<ProjectGuid>{5A06001D-287A-4B5F-A79E-52AD2871BF43}</ProjectGuid>
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<OutputType>Exe</OutputType>
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<RootNamespace>Convert_PDF_to_PDFA2A_conformance_document</RootNamespace>
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<AssemblyName>Convert-PDF-to-PDFA2A-conformance-document</AssemblyName>
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<TargetFrameworkVersion>v4.7.2</TargetFrameworkVersion>
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<FileAlignment>512</FileAlignment>
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<AutoGenerateBindingRedirects>true</AutoGenerateBindingRedirects>
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<Deterministic>true</Deterministic>
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</PropertyGroup>
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<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
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<PlatformTarget>AnyCPU</PlatformTarget>
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<DebugSymbols>true</DebugSymbols>
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<DebugType>full</DebugType>
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<Optimize>false</Optimize>
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<OutputPath>bin\Debug\</OutputPath>
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<DefineConstants>DEBUG;TRACE</DefineConstants>
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<ErrorReport>prompt</ErrorReport>
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<WarningLevel>4</WarningLevel>
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</PropertyGroup>
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<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
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<PlatformTarget>AnyCPU</PlatformTarget>
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<DebugType>pdbonly</DebugType>
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<Optimize>true</Optimize>
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<OutputPath>bin\Release\</OutputPath>
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<DefineConstants>TRACE</DefineConstants>
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<ErrorReport>prompt</ErrorReport>
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<WarningLevel>4</WarningLevel>
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</PropertyGroup>
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<ItemGroup>
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<Reference Include="Syncfusion.Compression.Base, Version=32.2462.8.0, Culture=neutral, PublicKeyToken=3d67ed1f87d44c89, processorArchitecture=MSIL">
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<HintPath>..\packages\Syncfusion.Compression.Base.32.2.8\lib\net462\Syncfusion.Compression.Base.dll</HintPath>
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</Reference>
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<Reference Include="Syncfusion.Licensing, Version=32.2462.8.0, Culture=neutral, PublicKeyToken=632609b4d040f6b4, processorArchitecture=MSIL">
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<HintPath>..\packages\Syncfusion.Licensing.32.2.8\lib\net462\Syncfusion.Licensing.dll</HintPath>
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</Reference>
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<Reference Include="Syncfusion.Pdf.Base, Version=32.2462.8.0, Culture=neutral, PublicKeyToken=3d67ed1f87d44c89, processorArchitecture=MSIL">
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<HintPath>..\packages\Syncfusion.Pdf.WinForms.32.2.8\lib\net462\Syncfusion.Pdf.Base.dll</HintPath>
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</Reference>
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<Reference Include="System" />
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<Reference Include="System.Core" />
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<Reference Include="System.Xml.Linq" />
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<Reference Include="System.Data.DataSetExtensions" />
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<Reference Include="Microsoft.CSharp" />
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<Reference Include="System.Data" />
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<Reference Include="System.Net.Http" />
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<Reference Include="System.Xml" />
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</ItemGroup>
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<ItemGroup>
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<Compile Include="Program.cs" />
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<Compile Include="Properties\AssemblyInfo.cs" />
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</ItemGroup>
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<ItemGroup>
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<None Include="App.config" />
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<None Include="packages.config" />
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</ItemGroup>
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<Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
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</Project>

‎PDF Conformance/Convert-PDF-to-PDFA2A-conformance-document/.NET Framework/Convert-PDF-to-PDFA2A-conformance-document/Input.pdf‎

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‎PDF Conformance/Convert-PDF-to-PDFA2A-conformance-document/.NET Framework/Convert-PDF-to-PDFA2A-conformance-document/Program.cs‎

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using Syncfusion.Pdf;
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using Syncfusion.Pdf.Parsing;
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using System.Collections.Generic;
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using System.IO;
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namespace Convert_PDF_to_PDFA2A_conformance_document
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{
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internal class Program
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{
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static void Main(string[] args)
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{
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var numPages = 0;
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//Set the PDF merge options.
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var pdfMergeOptions = new PdfMergeOptions
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{
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//Enable the Merge Accessibility Tags.
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MergeAccessibilityTags = true,
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OptimizeResources = true
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};
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//Create an array to store the PDF document streams.
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var streamInArray = new Stream[]
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{
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File.OpenRead(Path.GetFullPath("Input.pdf")),
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File.OpenRead(Path.GetFullPath("Input.pdf"))
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};
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//Create a list to store the PDF document streams.
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var streamInList = new List<MemoryStream>();
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foreach (var stream in streamInArray)
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{
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stream.Position = 0;
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//Load the PDF document.
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PdfLoadedDocument loadedDocument = new PdfLoadedDocument(stream);
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//Set the compression options.
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loadedDocument.CompressionOptions = new PdfCompressionOptions()
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{
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CompressImages = false,
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OptimizeFont = false,
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OptimizePageContents = false,
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RemoveMetadata = true
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};
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//Save the document into stream.
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MemoryStream ms = new MemoryStream();
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loadedDocument.Save(ms);
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loadedDocument.Close(true);
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streamInList.Add(new MemoryStream(ms.ToArray()));
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}
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using (var intermediatePdfStream = new MemoryStream())
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{
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//Create a new PDF document with PDF/A-2A conformance level.
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using (var pdfDocument = new PdfDocument(PdfConformanceLevel.Pdf_A2A))
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{
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//Set the AutoTag property to true.
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pdfDocument.AutoTag = true;
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//Set the PDF version to 1.7.
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pdfDocument.FileStructure.Version = PdfVersion.Version1_7;
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//Merge the PDF documents into a single PDF document.
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PdfDocumentBase.Merge(pdfDocument, pdfMergeOptions, streamInList.ToArray());
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numPages = pdfDocument.Pages.Count;
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//Save the document into stream.
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pdfDocument.Save(Path.GetFullPath("Output/Output.pdf"));
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//Close the document.
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pdfDocument.Close(true);
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}
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}
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}
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}
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}

‎PDF Conformance/Convert-PDF-to-PDFA2A-conformance-document/.NET Framework/Convert-PDF-to-PDFA2A-conformance-document/Properties/AssemblyInfo.cs‎

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using System.Reflection;
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using System.Runtime.CompilerServices;
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using System.Runtime.InteropServices;
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// General Information about an assembly is controlled through the following
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// set of attributes. Change these attribute values to modify the information
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// associated with an assembly.
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[assembly: AssemblyTitle("Convert-PDF-to-PDFA2A-conformance-document")]
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[assembly: AssemblyDescription("")]
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[assembly: AssemblyConfiguration("")]
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[assembly: AssemblyCompany("")]
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[assembly: AssemblyProduct("Convert-PDF-to-PDFA2A-conformance-document")]
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[assembly: AssemblyCopyright("Copyright © 2026")]
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[assembly: AssemblyTrademark("")]
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[assembly: AssemblyCulture("")]
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// Setting ComVisible to false makes the types in this assembly not visible
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// to COM components. If you need to access a type in this assembly from
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// COM, set the ComVisible attribute to true on that type.
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[assembly: ComVisible(false)]
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// The following GUID is for the ID of the typelib if this project is exposed to COM
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[assembly: Guid("5a06001d-287a-4b5f-a79e-52ad2871bf43")]
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// Version information for an assembly consists of the following four values:
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//
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// Major Version
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// Minor Version
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// Build Number
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// Revision
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//
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[assembly: AssemblyVersion("1.0.0.0")]
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[assembly: AssemblyFileVersion("1.0.0.0")]

‎PDF Conformance/Convert-PDF-to-PDFA2A-conformance-document/.NET Framework/Convert-PDF-to-PDFA2A-conformance-document/packages.config‎

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<?xml version="1.0" encoding="utf-8"?>
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<packages>
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<package id="Syncfusion.Compression.Base" version="32.2.8" targetFramework="net472" />
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<package id="Syncfusion.Licensing" version="32.2.8" targetFramework="net472" />
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<package id="Syncfusion.Pdf.WinForms" version="32.2.8" targetFramework="net472" />
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</packages>

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