Stamping New Content

import {PdfDocument, HorizontalAlignment, VerticalAlignment} from "@ironsoftware/ironpdf";

(async () => {
    // Open existing PDF
    const pdf = await PdfDocument.fromFile("Sample.pdf");

    // Configure the HTML stamp
    const stampOptions = {
        horizontalAlignment: HorizontalAlignment.Center,
        verticalAlignment: VerticalAlignment.Bottom,
        behindExistingContent: false,
        opacity: 30
    };

    const html = "<img src='https://ironpdf.com/img/products/ironpdf-logo-text-dotnet.svg'/>"
    // Apply the stamp to the PDF
    await pdf.stampHtml(html, {htmlStampOptions: stampOptions});

    // Save the stamped PDF
    await pdf.saveAs("stamped_image.pdf");
})();

Stamping New Content

HTML stamping leverages an input HTML fragment, granting control over design through inline CSS styling. In the code above, we include images within the HTML and then stamp them onto the document.

IronPDF offers a variety of versatile stamping options, including HTML, text, images, and barcodes. For each stamp, you can precisely define its position using both vertical and horizontal general locations. These locations can be further adjusted using offsets to achieve pixel-perfect placement. Additionally, most stamp types include opacity and rotation properties.

To learn more about how to effectively use these stamping features, visit the IronPDF Product Features page, where you'll find detailed information on customizing and implementing stamps in your PDF documents.