PM> Install-Package Spire.PDF

using Spire.Pdf;
using Spire.Pdf.Conversion;

namespace ConvertPdfToExcel
{
    class Program
    {
        static void Main(string[] args)
        {
            //Initialize an instance of PdfDocument class
            PdfDocument pdf = new PdfDocument();
            //Load the PDF document
            pdf.LoadFromFile("Sample.pdf");

            //Save the PDF document to XLSX
            pdf.SaveToFile("PdfToExcel.xlsx", FileFormat.XLSX);
        }
    }
}

Imports Spire.Pdf
Imports Spire.Pdf.Conversion

Namespace ConvertPdfToExcel
    Friend Class Program
        Private Shared Sub Main(ByVal args As String())
            'Initialize an instance of PdfDocument class
            Dim pdf As PdfDocument = New PdfDocument()
            'Load the PDF document
            pdf.LoadFromFile("Sample.pdf")

            'Save the PDF document to XLSX
            pdf.SaveToFile("PdfToExcel.xlsx", FileFormat.XLSX)
        End Sub
    End Class
End Namespace

using Spire.Pdf;
using Spire.Pdf.Conversion;

namespace ConvertPdfToExcel
{
    class Program
    {
        static void Main(string[] args)
        {
            //Initialize an instance of PdfDocument class
            PdfDocument pdf = new PdfDocument();
            //Load the PDF document
            pdf.LoadFromFile("Sample1.pdf");

            //Initialize an instance of XlsxLineLayoutOptions class, in the class constructor, setting the first parameter - convertToMultipleSheet as false.
            //The four parameters represent: convertToMultipleSheet, showRotatedText, splitCell, wrapText
            XlsxLineLayoutOptions options = new XlsxLineLayoutOptions(false, true, true, true);
            //Set PDF to XLSX convert options
            pdf.ConvertOptions.SetPdfToXlsxOptions(options);

            //Save the PDF document to XLSX
            pdf.SaveToFile("PdfToOneExcelSheet.xlsx", FileFormat.XLSX);
        }
    }
}

Imports Spire.Pdf
Imports Spire.Pdf.Conversion

Namespace ConvertPdfToExcel
    Friend Class Program
        Private Shared Sub Main(ByVal args As String())
            'Initialize an instance of PdfDocument class
            Dim pdf As PdfDocument = New PdfDocument()
            'Load the PDF document
            pdf.LoadFromFile("Sample1.pdf")

            'Initialize an instance of XlsxLineLayoutOptions class, in the class constructor, setting the first parameter - convertToMultipleSheet as false.
            'The four parameters represent: convertToMultipleSheet, showRotatedText, splitCell, wrapText
            Dim options As XlsxLineLayoutOptions = New XlsxLineLayoutOptions(False, True, True, True)
            'Set PDF to XLSX convert options
            pdf.ConvertOptions.SetPdfToXlsxOptions(options)

            'Save the PDF document to XLSX
            pdf.SaveToFile("PdfToOneExcelSheet.xlsx", FileFormat.XLSX)
        End Sub
    End Class
End Namespace

PM> Install-Package Spire.PDF

using Spire.Pdf;

namespace SVGtoPDF
{
    class Program
    {
        static void Main(string[] args)
        {
            //Create a PdfDocument object
            PdfDocument doc = new PdfDocument();

            //Load a sample SVG file
            doc.LoadFromSvg("Sample.svg");

            //Save result document
            doc.SaveToFile("Result.pdf", FileFormat.PDF);
            doc.Dispose();
        }
    }
}

Imports Spire.Pdf

Namespace SVGtoPDF
    Friend Class Program
        Private Shared Sub Main(ByVal args As String())
            'Create a PdfDocument object
            Dim doc As PdfDocument = New PdfDocument()

            'Load a sample SVG file
            doc.LoadFromSvg("Sample.svg")

            'Save result document
            doc.SaveToFile("Result.pdf", FileFormat.PDF)
            doc.Dispose();            

        End Sub
    End Class
End Namespace

using Spire.Pdf;
using Spire.Pdf.Graphics;
using System.Drawing;

namespace AddSVGImagetoPDF
{
    class Program
    {
        static void Main(string[] args)
        {
            //Create a PdfDocument object
            PdfDocument doc1 = new PdfDocument();

            //Load an SVG file
            doc1.LoadFromSvg("C:\\Users\\Administrator\\Desktop\\sample.svg");

            //Create a template based on the content of the SVG file
            PdfTemplate template = doc1.Pages[0].CreateTemplate();

            //Get the width and height of the template 
            float width = template.Width;
            float height = template.Height;

            //Create another PdfDocument object
            PdfDocument doc2 = new PdfDocument();

            //Load a PDF file
            doc2.LoadFromFile("C:\\Users\\Administrator\\Desktop\\sample.pdf");

            //Draw the template with a custom size at a specified location 
            doc2.Pages[0].Canvas.DrawTemplate(template, new PointF(0, 0), new SizeF(width * 0.8f, height * 0.8f));

            //Save to PDF file
            doc2.SaveToFile("AddSvgToPdf.pdf", FileFormat.PDF);
            doc2.Dispose();
        }
    }
}

Imports Spire.Pdf
Imports Spire.Pdf.Graphics
Imports System.Drawing

Namespace AddSVGImagetoPDF
    Friend Class Program
        Private Shared Sub Main(ByVal args As String())
            'Create a PdfDocument object
            Dim doc1 As PdfDocument = New PdfDocument()

            'Load an SVG file
            doc1.LoadFromSvg("C:\Users\Administrator\Desktop\sample.svg")

            'Create a template based on the content of the SVG file
            Dim template As PdfTemplate = doc1.Pages(0).CreateTemplate()

            'Get the width and height of the template 
            Dim width As Single = template.Width
            Dim height As Single = template.Height

            'Create another PdfDocument object
            Dim doc2 As PdfDocument = New PdfDocument()

            'Load a PDF file
            doc2.LoadFromFile("C:\Users\Administrator\Desktop\sample.pdf")

            'Draw the template with a custom size at a specified location 
            doc2.Pages(0).Canvas.DrawTemplate(template, New PointF(0, 0), New SizeF(width * 0.8F, height * 0.8F))

            'Save to PDF file
            doc2.SaveToFile("AddSvgToPdf.pdf", FileFormat.PDF)
            doc2.Dispose()
        End Sub
    End Class
End Namespace

PM> Install-Package Spire.PDF

using System;
using Spire.Pdf;

namespace CreatePDFPortfolio
{
    class Program
    {
        static void Main(string[] args)
        {
            // Specify the files
            String[] files = new String[] { "input.pdf", "sample.docx", "report.xlsx", "Intro.pptx", "logo.png" };

            //Create a PdfDocument instance
            using (PdfDocument pdf = new PdfDocument())
            {
                //Create a PDF portfolio and add files to it
                for (int i = 0; i < files.Length; i++)
                {
                    pdf.Collection.AddFile(files[i]);

                }
                //Save the result file
                pdf.SaveToFile("PortfolioWithFiles.pdf", FileFormat.PDF);
                pdf.Dispose();
            }
        }
    }
}

Imports Spire.Pdf

Namespace CreatePDFPortfolio
    Class Program
        Private Shared Sub Main(ByVal args() As String)
            ' Specify the files
            Dim files() As String = New String() {"input.pdf", "sample.docx", "report.xlsx", "Intro.pptx", "logo.png"}

            'Create a PdfDocument instance
            Dim pdf As PdfDocument = New PdfDocument

            'Create a PDF portfolio and add files to it
            Dim i As Integer = 0
            Do While (i < files.Length)
                pdf.Collection.AddFile(files(i))
                i = (i + 1)
            Loop

            'Save the result file
            pdf.SaveToFile("PortfolioWithFiles.pdf", FileFormat.PDF)
            pdf.Dispose()
        End Sub
    End Class
End Namespace

using System;
using Spire.Pdf;
using Spire.Pdf.Collections;

namespace CreatePDFPortfolio
{
    class Program
    {
        static void Main(string[] args)
        {
            // Specify the files
            String[] files = new String[] { "input.pdf", "sample.docx", "report.xlsx", "Intro.pptx", "logo.png" };

            //Create a PdfDocument instance
            using (PdfDocument pdf = new PdfDocument())
            {
                //Create a PDF portfolio and add folders to it 
                for (int i = 0; i < files.Length; i++)
                {
                    PdfFolder folder = pdf.Collection.Folders.CreateSubfolder("Folder" + i);

                    //Add files to the folders
                    folder.AddFile(files[i]);
                }

                //Save the result file
                pdf.SaveToFile("PortfolioWithFolders.pdf", FileFormat.PDF);
                pdf.Dispose();
            }
        }
    }
}

Imports Spire.Pdf
Imports Spire.Pdf.Collections

Namespace CreatePDFPortfolio
    Class Program
        Private Shared Sub Main(ByVal args() As String)
            ' Specify the files
            Dim files() As String = New String() {"input.pdf", "sample.docx", "report.xlsx", "Intro.pptx", "logo.png"}

            'Create a PdfDocument instance
            Dim pdf As PdfDocument = New PdfDocument

            'Create a PDF portfolio and add folders to it 
            Dim i As Integer = 0
            Do While (i < files.Length)
                Dim folder As PdfFolder = pdf.Collection.Folders.CreateSubfolder(("Folder" + i))

                'Add files to the folders
                folder.AddFile(files(i))
                i = (i + 1)
            Loop

            'Save the result file
            pdf.SaveToFile("PortfolioWithFolders.pdf", FileFormat.PDF)
            pdf.Dispose()
        End Sub
    End Class
End Namespace

PM> Install-Package Spire.XLS

using Spire.Xls;

namespace ConvertHtmlToExcel
{
    internal class Program
    {
        static void Main(string[] args)
        {
            // Specify the input HTML file path
            string filePath = @"C:\Users\Administrator\Desktop\Sample.html";

            // Create an object of the workbook class
            Workbook workbook = new Workbook();

            // Load the HTML file
            workbook.LoadFromHtml(filePath);

            // Save the HTML file in Excel XLSX format
            string result = @"C:\Users\Administrator\Desktop\ToExcel.xlsx";
            workbook.SaveToFile(result, ExcelVersion.Version2013);

            workbook.Dispose();
        }
    }
}

using Spire.Xls;

namespace InsertHtmlStringInExcel
{
    internal class Program
    {
        static void Main(string[] args)
        {
            // Create an object of the workbook class
            Workbook workbook = new Workbook();
            // Get the first sheet
            Worksheet sheet = workbook.Worksheets[0];

            // Specify the HTML string
            string htmlCode = "<p><font size='12'>This is a <b>paragraph</b> with <span style='color: red;'>colored text</span>.</font></p>";

            // Get the cell that you want to add the HTML string to
            CellRange range = sheet.Range["A1"];
            // Add the HTML string to the cell
            range.HtmlString = htmlCode;

            // Auto-adjust the width of the first column based on its content
            sheet.AutoFitColumn(1);

            // Save the resulting workbook to a new file
            string result = @"C:\Users\Administrator\Desktop\InsertHtmlStringIntoCell.xlsx";
            workbook.SaveToFile(result, ExcelVersion.Version2013);

            workbook.Dispose();
        }
    }
}