Stamping HTML Content

from ironpdf import *

# Create an HtmlStamper object to stamp an image onto a PDF
stamper = HtmlStamper("<img src='https://ironpdf.com/img/products/ironpdf-logo-text-dotnet.svg'/>")
stamper.HorizontalAlignment = HorizontalAlignment.Center
stamper.VerticalAlignment = VerticalAlignment.Bottom
stamper.IsStampBehindContent = False
stamper.Opacity = 30

# Load an existing PDF document and apply the stamp to it
pdf = PdfDocument.FromFile("Sample.pdf")
pdf.ApplyStamp(stamper).SaveAs("stampedimage.pdf")

pip install ironpdf

pip install ironpdf

Stamping HTML Content

IronPDF for Python can overlay HTML content onto existing PDF pages using the HtmlStamper class, allowing you to add logos, images, text, or any other HTML-rendered element on top of or behind page content.

Getting Started

Create an HtmlStamper with your HTML fragment, configure its positioning and appearance properties, load a PdfDocument, and call ApplyStamp to apply the stamp to all pages.

Understanding the Code

HtmlStamper(html): Accepts an HTML string - including <img> tags, styled text, or any valid HTML - and creates a stamper object that renders that HTML as an overlay.
HorizontalAlignment: Controls the horizontal position of the stamp on the page. Options include Left, Center, and Right.
VerticalAlignment: Controls the vertical position. Options include Top, Middle, and Bottom.
IsStampBehindContent: When False (default), the stamp appears on top of existing page content. Set to True to render the stamp behind the content, useful for watermarks or background graphics.
Opacity: A value from 0 (transparent) to 100 (fully opaque) that controls how visible the stamp is on the page.
PdfDocument.FromFile(path): Loads the existing PDF to be stamped.
ApplyStamp(stamper): Applies the stamp to all pages of the document and returns the modified PdfDocument.