iTextSharp: PDF에 이미지 추가

using IronPdf;
using IronPdf.Editing;

// Load an existing PDF
PdfDocument pdf = PdfDocument.FromFile("invoice.pdf");

// Create a watermark with transparency
ImageStamper watermark = new ImageStamper("watermark.png")
{
    Opacity = 30,  // 30% opacity for subtle watermarking
    Rotation = -45, // Diagonal watermark
    HorizontalAlignment = HorizontalAlignment.Center,
    VerticalAlignment = VerticalAlignment.Middle
};

// Apply watermark to all pages
pdf.ApplyStamp(watermark);

// Add a header logo
ImageStamper logo = new ImageStamper("company-logo.png")
{
    HorizontalOffset = Length.Millimeters(10),
    VerticalOffset = Length.Millimeters(10),
    Width = 150,
    Height = 50
};

pdf.ApplyStamp(logo, PageSelection.FirstPage);
pdf.SaveAs("watermarked-invoice.pdf");

Imports IronPdf
Imports IronPdf.Editing

' Load an existing PDF
Dim pdf As PdfDocument = PdfDocument.FromFile("invoice.pdf")

' Create a watermark with transparency
Dim watermark As New ImageStamper("watermark.png") With {
    .Opacity = 30,  ' 30% opacity for subtle watermarking
    .Rotation = -45, ' Diagonal watermark
    .HorizontalAlignment = HorizontalAlignment.Center,
    .VerticalAlignment = VerticalAlignment.Middle
}

' Apply watermark to all pages
pdf.ApplyStamp(watermark)

' Add a header logo
Dim logo As New ImageStamper("company-logo.png") With {
    .HorizontalOffset = Length.Millimeters(10),
    .VerticalOffset = Length.Millimeters(10),
    .Width = 150,
    .Height = 50
}

pdf.ApplyStamp(logo, PageSelection.FirstPage)
pdf.SaveAs("watermarked-invoice.pdf")

// Add images from Base64 strings
string base64Image = Convert.ToBase64String(File.ReadAllBytes("signature.png"));
HtmlStamper signatureStamp = new HtmlStamper($"<img src='data:image/png;base64,{base64Image}'/>");
signatureStamp.HorizontalAlignment = HorizontalAlignment.Right;
signatureStamp.VerticalAlignment = VerticalAlignment.Bottom;
pdf.ApplyStamp(signatureStamp);

Imports System
Imports System.IO

' Add images from Base64 strings
Dim base64Image As String = Convert.ToBase64String(File.ReadAllBytes("signature.png"))
Dim signatureStamp As New HtmlStamper($"<img src='data:image/png;base64,{base64Image}'/>")
signatureStamp.HorizontalAlignment = HorizontalAlignment.Right
signatureStamp.VerticalAlignment = VerticalAlignment.Bottom
pdf.ApplyStamp(signatureStamp)

using iText.Kernel.Pdf;
using iText.Layout;
using iText.Layout.Element;
using iText.IO.Image;

class Program
{
    public static void Main(string[] args)
    {
        // Initialize PDF writer
        var pdfWriter = new PdfWriter("output.pdf");

        // Initialize PDF document
        var pdfDocument = new iText.Kernel.Pdf.PdfDocument(pdfWriter);

        // Initialize document
        var document = new Document(pdfDocument);

        // Create ImageData from image file
        ImageData imageData = ImageDataFactory.Create("iText.png");

        // Create an Image instance
        Image image = new Image(imageData);

        // Set fixed position for the image in the PDF
        image.SetFixedPosition(50, 100);  // x, y coordinates

        // Scale image to fit within specified dimensions
        image.ScaleToFit(200, 200);  // Width, Height

        // Add image to document
        document.Add(image);

        // Close the document
        document.Close();
    }
}

Imports iText.Kernel.Pdf
Imports iText.Layout
Imports iText.Layout.Element
Imports iText.IO.Image

Friend Class Program
	Public Shared Sub Main(ByVal args() As String)
		' Initialize PDF writer
		Dim pdfWriter As New PdfWriter("output.pdf")

		' Initialize PDF document
		Dim pdfDocument = New iText.Kernel.Pdf.PdfDocument(pdfWriter)

		' Initialize document
		Dim document As New Document(pdfDocument)

		' Create ImageData from image file
		Dim imageData As ImageData = ImageDataFactory.Create("iText.png")

		' Create an Image instance
		Dim image As New Image(imageData)

		' Set fixed position for the image in the PDF
		image.SetFixedPosition(50, 100) ' x, y coordinates

		' Scale image to fit within specified dimensions
		image.ScaleToFit(200, 200) ' Width, Height

		' Add image to document
		document.Add(image)

		' Close the document
		document.Close()
	End Sub
End Class

using iText.Kernel.Pdf;
using iText.Layout;
using iText.Layout.Element;
using iText.IO.Image;
using iText.Layout.Properties;

// Create a grid of images
var pdfWriter = new PdfWriter("catalog.pdf");
var pdfDocument = new PdfDocument(pdfWriter);
var document = new Document(pdfDocument);

// Add images in a grid layout
float xPosition = 50;
float yPosition = 750;
int imagesPerRow = 3;
int currentImage = 0;

string[] imageFiles = { "product1.jpg", "product2.jpg", "product3.jpg", 
                       "product4.jpg", "product5.jpg", "product6.jpg" };

foreach (string imagePath in imageFiles)
{
    ImageData imageData = ImageDataFactory.Create(imagePath);
    Image image = new Image(imageData);

    // Calculate position
    int column = currentImage % imagesPerRow;
    int row = currentImage / imagesPerRow;

    float x = xPosition + (column * 180);
    float y = yPosition - (row * 250);

    image.SetFixedPosition(x, y);
    image.ScaleToFit(150, 200);

    document.Add(image);
    currentImage++;
}

document.Close();

Imports iText.Kernel.Pdf
Imports iText.Layout
Imports iText.Layout.Element
Imports iText.IO.Image
Imports iText.Layout.Properties

' Create a grid of images
Dim pdfWriter As New PdfWriter("catalog.pdf")
Dim pdfDocument As New PdfDocument(pdfWriter)
Dim document As New Document(pdfDocument)

' Add images in a grid layout
Dim xPosition As Single = 50
Dim yPosition As Single = 750
Dim imagesPerRow As Integer = 3
Dim currentImage As Integer = 0

Dim imageFiles As String() = {"product1.jpg", "product2.jpg", "product3.jpg", "product4.jpg", "product5.jpg", "product6.jpg"}

For Each imagePath As String In imageFiles
    Dim imageData As ImageData = ImageDataFactory.Create(imagePath)
    Dim image As New Image(imageData)

    ' Calculate position
    Dim column As Integer = currentImage Mod imagesPerRow
    Dim row As Integer = currentImage \ imagesPerRow

    Dim x As Single = xPosition + (column * 180)
    Dim y As Single = yPosition - (row * 250)

    image.SetFixedPosition(x, y)
    image.ScaleToFit(150, 200)

    document.Add(image)
    currentImage += 1
Next

document.Close()

// Configure compression when rendering
var renderer = new ChromePdfRenderer();
renderer.RenderingOptions.JpegQuality = 85; // 0-100 quality scale

// Compress existing PDFs with images
PdfDocument pdf = PdfDocument.FromFile("large-images.pdf");
pdf.CompressImages(60); // Compress to 60% quality
pdf.SaveAs("compressed.pdf");

// Additional optimization options
renderer.RenderingOptions.GrayScale = true; // Convert to grayscale
renderer.RenderingOptions.DPI = 150; // Reduce DPI for web viewing

Imports IronPdf

' Configure compression when rendering
Dim renderer As New ChromePdfRenderer()
renderer.RenderingOptions.JpegQuality = 85 ' 0-100 quality scale

' Compress existing PDFs with images
Dim pdf As PdfDocument = PdfDocument.FromFile("large-images.pdf")
pdf.CompressImages(60) ' Compress to 60% quality
pdf.SaveAs("compressed.pdf")

' Additional optimization options
renderer.RenderingOptions.GrayScale = True ' Convert to grayscale
renderer.RenderingOptions.DPI = 150 ' Reduce DPI for web viewing

// Extract all images from a PDF
PdfDocument pdf = PdfDocument.FromFile("document.pdf");
var images = pdf.ExtractAllImages();

foreach (var image in images)
{
    // Save extracted images
    image.SaveAs($"extracted_image_{images.IndexOf(image)}.png");
}

// Extract images from specific pages
var pageImages = pdf.ExtractImagesFromPage(0); // First page

Imports System

' Extract all images from a PDF
Dim pdf As PdfDocument = PdfDocument.FromFile("document.pdf")
Dim images = pdf.ExtractAllImages()

For Each image In images
    ' Save extracted images
    image.SaveAs($"extracted_image_{images.IndexOf(image)}.png")
Next

' Extract images from specific pages
Dim pageImages = pdf.ExtractImagesFromPage(0) ' First page