IronPDF Features

Photo by Lee Campbell

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IronPDF is a .NET library allowing developers to create, edit and export PDF documents.

HTML to PDF technology

Our industry leading PDF Library uses a fully featured, heedless and embedded Chrome / Webkit based web browser as its rendering engine. No installation required.

We do not know of a more accurate HTML to PDF converter.

Create PDF documents using:

  • HTML Strings and Templates
  • ASPX WebForms
  • MVC Views
  • HTML documents
  • or from any URL

HTML to PDF Supports:

  • Full and high fidelity HTML 4 and HTML 5 rendering
  • CSS 3
  • Javascript
  • Image assets
  • SVG assets
  • Icon Fonts (Fontello, Bootstrap, FontAwesome)
  • Responsive layouts
  • External stylesheets and assets (http https or filesystem)
  • Static and multithreaded rendering
  • Loading URLS using with custom:
    • Network login credentials
    • UserAgents
    • Proxies
    • Cookies
    • HTTP headers
    • Form variables allowing login behind HTML login forms

HTML to PDF Settings

  • Set custom “base URL” or file paths allowing asset files to be easily loaded from file system or across the web
  • Virtual View port (Width and Height) allowing for responsive layouts to be used
  • Screen or Print CSS media types
  • Convert HTML Forms to PDF forms
    • Read only or editable
  • Load custom stylesheets programmatically
  • Set output PDF resolution in DPI
  • Set JPEG image quality
  • Enable Javascript support including optional Render delays
  • Custom page numbering
  • Automatically scale HTML content to fit paper dimensions
    • Preserving text rendering quality
  • Full Color and Grayscale PDF
  • Accept HTML encoded in any major file encoding. Default to UTF-8
  • Set PDF paper margins
    • Set in mm or inches
    • Supports zero margin PDFs
  • Create PDFs using any standard international paper size
    • Support for custom sizing in mm or inches
    • Paper orientations in landscape or portrait
  • Enable or Disable HTML backgrounds from showing in PDFs
  • Custom zoom


ImagetoDataURI utility makes it easy to embed System.Drawing image objects into HTML strings.


Automatically render an ASPX webform as PDF in 3 lines of code. PDF documents may be set to download or display in the browser.

PDF Imaging

IronPDF makes it easy to work to convert PDF documents to and from Images.

Image To PDF

Convert any number of image files or System.Daring objects into a PDF in 1 line of code

PDF to Image

Rasterize any or all PDF pages to Images

Image Extraction

Extract embedded images an existing PDF

Image Support

  • BMP, JPEG, GIF, ONG and TIFF Files
  • System.Drawing Bitmap and Image Objects

PDF Printing

  • Turn any PDF into a PrintDocument object
  • Programmatically send PDFs to a Printer without Adobe


PDFs can be loaded or saved from Files, Binary Data or MemoryStreams including:

  • Load and save PDFs
  • Support save and load using user and administrator passwords with 128 bit encryption

PDF Signatures

  • Digitally sign a PDF or add additional signatures after editing.
    • Set Signature Images, Location, Metadata, Contact information and Timestamps
    • Verify PDF signatures

Editing PDFS

  • Add, Edit and Remove PDF Outlines / Bookmarks
  • Add text annotations (sticky notes) programmatically to any PDF page
  • Add foreground or background overlays from HTML or PDF assets
  • Add HTML watermarks with opacity to any PDF
  • Stamp new HTML Content onto any existing PDF page
  • Add logical or HTML headers and footers to any PDF
  • Merge and Join PDF pages
  • Copy, Add, and Remove pages
  • Rotate pages
  • Edit MetaData, user permissions & PDF passwords

PDF Content Extraction

Extract plain Text and Images from existing PDFs

Headers and Footers

Headers and Footers can be added when a PDF is created, or added to existing PDFs

Logical Headers and Footers

  • Fonts size and Font Family
  • Divider Lines
  • Simple API using Center, Left, and Right text fields

HTML Header Footers

  • Supports CSS, Images and even JS
  • BaseUrl for loading assets from http, https or file system
  • Load or ignore CSS from parent HTML document

Headers and Footers support merged data including:

  • Page numbers
  • Page count
  • Titles
  • URL
  • Time and date


Framework 4 and above

Supports: Windows, Azure

Core 2.0 and above

Supports: MacOS, Linux, Windows. Includes support for cloud hosting including AWS and Azure

.Net Standard 2.0 and above

Supports: MacOS, Linux, Windows. Includes support for cloud hosting including AWS and Azure

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