Codecs: How to convert PDF to SVG?

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VintaSoft Imaging .NET SDK can render PDF page in vector form and save vector content to a SVG file.

VintaSoft Imaging .NET SDK allows to convert PDF document to a SVG document using class DocumentConverter or ImageCollection. Usage of DocumentConverter class provides the best performance because DocumentConverter class uses multi-threading.

Here is C#/VB.NET code that shows how to convert PDF document to a SVG file(s) using DocumentConverter class:

/// <summary>
/// Converts PDF document to a SVG file(s) using Vintasoft.Imaging.DocumentConverter class.
/// </summary>
public static void ConvertPdfToSvg_DocumentConverter(string pdfFileName, string svgFileName)
{
    // see GetSinglePageFilename method in DocumentConverter class for examples of available single page format names
    string svgFormattedFileName = System.IO.Path.GetFileNameWithoutExtension(svgFileName) + "_{PageNumber}.svg";

    Vintasoft.Imaging.DocumentConverter.Convert(pdfFileName, svgFormattedFileName);
}

VB.NET

''' <summary>
''' Converts PDF document to a SVG file(s) using Vintasoft.Imaging.DocumentConverter class.
''' </summary>
Public Shared Sub ConvertPdfToSvg_DocumentConverter(pdfFileName As String, svgFileName As String)
    ' see GetSinglePageFilename method in DocumentConverter class for examples of available single page format names
    Dim svgFormattedFileName As String = System.IO.Path.GetFileNameWithoutExtension(svgFileName) & "_{PageNumber}.svg"

    Vintasoft.Imaging.DocumentConverter.Convert(pdfFileName, svgFormattedFileName)
End Sub

Here is C#/VB.NET code that shows how to convert PDF document to a SVG file(s) using ImageCollection class:

/// <summary>
/// Converts PDF document to SVG file(s) using ImageCollection and SvgEncoder classes.
/// </summary>
public static void ConvertPdfToSvg_ImageCollection(string pdfFileName, string svgFileName)
{
    // create image collection
    using (Vintasoft.Imaging.ImageCollection images = new Vintasoft.Imaging.ImageCollection())
    {
        // add DOCX document to the image collection
        images.Add(pdfFileName);

        // create SVG encoder
        using (Vintasoft.Imaging.Codecs.Encoders.SvgEncoder svgEncoder = 
            new Vintasoft.Imaging.Codecs.Encoders.SvgEncoder())
        {
            // specify that SVG encoder should compress embedded image using PNG compression
            svgEncoder.Settings.EmbeddedImageEncoder = new Vintasoft.Imaging.Codecs.Encoders.PngEncoder();

            // if document contains only one page
            if (images.Count == 1)
            {
                // save page to SVG file
                images[0].Save(svgFileName, svgEncoder);
            }
            // if document contains several pages
            else
            {
                // for each page in PDF document
                for (int i = 0; i < images.Count; i++)
                {
                    // save page to SVG file
                    images[i].Save(GetPageFilename(svgFileName, i + 1), svgEncoder);
                }
            }
        }

        // dispose images
        images.ClearAndDisposeItems();
    }
}

/// <summary>
/// Returns the filename for specified page number.
/// </summary>
/// <param name="fileName">The filename.</param>
/// <param name="pageNumber">The page number.</param>
/// <returns>The filename for specified page number.</returns>
private static string GetPageFilename(string fileName, int pageNumber)
{
    string fileExtension = System.IO.Path.GetExtension(fileName);
    string dirName = System.IO.Path.GetDirectoryName(fileName);
    string filePathWithoutExtension = System.IO.Path.Combine(dirName, System.IO.Path.GetFileNameWithoutExtension(fileName));
    return string.Format("{0}_{1}{2}", filePathWithoutExtension, pageNumber, fileExtension);
}

VB.NET

''' <summary>
''' Converts PDF document to SVG file(s) using ImageCollection and SvgEncoder classes.
''' </summary>
Public Shared Sub ConvertPdfToSvg_ImageCollection(pdfFileName As String, svgFileName As String)
    ' create image collection
    Using images As New Vintasoft.Imaging.ImageCollection()
        ' add DOCX document to the image collection
        images.Add(pdfFileName)

        ' create SVG encoder
        Using svgEncoder As New Vintasoft.Imaging.Codecs.Encoders.SvgEncoder()
            ' specify that SVG encoder should compress embedded image using PNG compression
            svgEncoder.Settings.EmbeddedImageEncoder = New Vintasoft.Imaging.Codecs.Encoders.PngEncoder()

            ' if document contains only one page
            If images.Count = 1 Then
                ' save page to SVG file
                images(0).Save(svgFileName, svgEncoder)
            Else
                ' if document contains several pages
                ' for each page in PDF document
                For i As Integer = 0 To images.Count - 1
                    ' save page to SVG file
                    images(i).Save(GetPageFilename(svgFileName, i + 1), svgEncoder)
                Next
            End If
        End Using

        ' dispose images
        images.ClearAndDisposeItems()
    End Using
End Sub

''' <summary>
''' Returns the filename for specified page number.
''' </summary>
''' <param name="fileName">The filename.</param>
''' <param name="pageNumber">The page number.</param>
''' <returns>The filename for specified page number.</returns>
Private Shared Function GetPageFilename(fileName As String, pageNumber As Integer) As String
    Dim fileExtension As String = System.IO.Path.GetExtension(fileName)
    Dim dirName As String = System.IO.Path.GetDirectoryName(fileName)
    Dim filePathWithoutExtension As String = System.IO.Path.Combine(dirName, System.IO.Path.GetFileNameWithoutExtension(fileName))
    Return String.Format("{0}_{1}{2}", filePathWithoutExtension, pageNumber, fileExtension)
End Function

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