将 PDF/A 转换为 PDF 格式

以下代码片段也适用于 Aspose.PDF.Drawing 库。

将 PDF/A 文档转换为 PDF

将 PDF/A 文档转换为 PDF 意味着从原始文档中移除 PDF/A 限制。 类 Document 有方法 RemovePdfaCompliance(..) 用于从输入/源文件中移除 PDF 合规性信息。

.NET Core 3.1

// For complete examples and data files, visit https://github.com/aspose-pdf/Aspose.PDF-for-.NET
private static void ConvertPDFAtoPDF()
{
    // The path to the documents directory
    var dataDir = RunExamples.GetDataDir_AsposePdf_DocumentConversion();

    // Open PDF document
    using (var document = new Aspose.Pdf.Document(dataDir + "PDFAToPDF.pdf"))
    {
        // Remove PDF/A compliance information
        document.RemovePdfaCompliance();
    
        // Save PDF document
        document.Save(dataDir + "PDFAToPDF_out.pdf");
    }
}

.NET 8

// For complete examples and data files, visit https://github.com/aspose-pdf/Aspose.PDF-for-.NET
private static void ConvertPDFAtoPDF()
{
    // The path to the documents directory
    var dataDir = RunExamples.GetDataDir_AsposePdf_DocumentConversion();

    // Open PDF document
    using var document = new Aspose.Pdf.Document(dataDir + "PDFAToPDF.pdf");

    // Remove PDF/A compliance information
    document.RemovePdfaCompliance();
    
    // Save PDF document
    document.Save(dataDir + "PDFAToPDF_out.pdf");
}

如果您对文档进行任何更改（例如添加页面），也可以移除 PDF/A 合规性。在以下示例中，输出文档在添加新页面后失去 PDF/A 合规性。

.NET Core 3.1

// For complete examples and data files, visit https://github.com/aspose-pdf/Aspose.PDF-for-.NET
private static void ConvertPDFAtoPDFAdvanced()
{
    // The path to the documents directory
    var dataDir = RunExamples.GetDataDir_AsposePdf_DocumentConversion();

    // Open PDF document
    using (var document = new Aspose.Pdf.Document(dataDir + "PDFAToPDF.pdf"))
    {
        // Adding a new (empty) page removes PDF/A compliance information.
        document.Pages.Add();

        // Save PDF document
        document.Save(dataDir + "PDFAToPDF_out.pdf");
    }
}

.NET 8

// For complete examples and data files, visit https://github.com/aspose-pdf/Aspose.PDF-for-.NET
private static void ConvertPDFAtoPDFAdvanced()
{
    // The path to the documents directory
    var dataDir = RunExamples.GetDataDir_AsposePdf_DocumentConversion();

    // Open PDF document
    using var document = new Aspose.Pdf.Document(dataDir + "PDFAToPDF.pdf");

    // Adding a new (empty) page removes PDF/A compliance information.
    document.Pages.Add();

    // Save PDF document
    document.Save(dataDir + "PDFAToPDF_out.pdf");
}