Convert PDF File

Convert PDF Pages to Different Image Formats (Facades)

In order to convert PDF pages to different image formats, you need to create PdfConverter object and open the PDF file using BindPdf method. After that, you need to call DoConvert method for initialization tasks. Then, you can loop through all the pages using HasNextImage and GetNextImage methods. The GetNextImage method allows you to create image of a particular page. You also need to pass ImageFormat to this method in order to create an image of specific type i.e. JPEG, GIF or PNG etc. Finally, call the Close method of the PdfConverter class. The following code snippet shows you how to convert PDF pages to images.

public static void ConvertPdfPagesToImages01()
{
    // Create PdfConverter object
    PdfConverter converter = new PdfConverter();

    // Bind input pdf file
    converter.BindPdf(_dataDir + "Sample-Document-01.pdf");

    // Initialize the converting process
    converter.DoConvert();

    // Check if pages exist and then convert to image one by one
    while (converter.HasNextImage())
    {
        converter.GetNextImage(_dataDir + System.DateTime.Now.Ticks.ToString() + "_out.jpg", System.Drawing.Imaging.ImageFormat.Jpeg);
    }

    // Close the PdfConverter object
    converter.Close();
}

In the next code snippet, we will show how you can change some parameters. With CoordinateType we set the frame ‘CropBox’. Also, we can change Resolution specifying the number of dots per inch. The next one FormPresentationMode - form presentation mode. Then we indicate the StartPage with which the page number of the beginning of the conversion is set. We can also specify the last page by setting a range.

public static void ConvertPdfPagesToImages02()
{
    // Create PdfConverter object
    PdfConverter converter = new PdfConverter();

    // Bind input pdf file
    converter.BindPdf(_dataDir + "Sample-Document-01.pdf");

    // Initialize the converting process
    converter.DoConvert();
    converter.CoordinateType = PageCoordinateType.CropBox;
    converter.Resolution = new Devices.Resolution(600);
    converter.FormPresentationMode = Devices.FormPresentationMode.Production;
    converter.StartPage = 2;

    // Check if pages exist and then convert to image one by one
    while (converter.HasNextImage())
    {
        converter.GetNextImage(_dataDir + System.DateTime.Now.Ticks.ToString() + "_out.jpg", System.Drawing.Imaging.ImageFormat.Jpeg);
    }

    // Close the PdfConverter object
    converter.Close();
}

Convert PDF File

Convert PDF Pages to Different Image Formats (Facades)

See also