.NET PDF Library

Name: IronPDF
Brand: Iron Software
Availability: InStock
Rating: 4.87 (307 reviews)

Create PDFs with .NET using HTML5, CSS, JavaScript, and Images
Edit, Stamp, Add Headers & Footers to a PDF in .NET
Read PDF Text and Extract Images

Try IronPDF’s .NET PDF Library

Using HTML To Create a PDF

using IronPdf;

// Disable local disk access or cross-origin requests
Installation.EnableWebSecurity = true;

// Instantiate Renderer
var renderer = new ChromePdfRenderer();

// Create a PDF from a HTML string using C#
var pdf = renderer.RenderHtmlAsPdf("<h1>Hello World</h1>");

// Export to a file or Stream
pdf.SaveAs("output.pdf");

// Advanced Example with HTML Assets
// Load external html assets: Images, CSS and JavaScript.
// An optional BasePath 'C:\site\assets\' is set as the file location to load assets from
var myAdvancedPdf = renderer.RenderHtmlAsPdf("<img src='icons/iron.png'>", @"C:\site\assets\");
myAdvancedPdf.SaveAs("html-with-assets.pdf");

Imports IronPdf

' Disable local disk access or cross-origin requests
Installation.EnableWebSecurity = True

' Instantiate Renderer
Dim renderer As New ChromePdfRenderer()

' Create a PDF from a HTML string using C#
Dim pdf = renderer.RenderHtmlAsPdf("<h1>Hello World</h1>")

' Export to a file or Stream
pdf.SaveAs("output.pdf")

' Advanced Example with HTML Assets
' Load external html assets: Images, CSS and JavaScript.
' An optional BasePath 'C:\site\assets\' is set as the file location to load assets from
Dim myAdvancedPdf = renderer.RenderHtmlAsPdf("<img src='icons/iron.png'>", "C:\site\assets\")
myAdvancedPdf.SaveAs("html-with-assets.pdf")

PM > Install-Package IronPdf

Install-Package IronPdf

With IronPDF, you can create new PDF documents from simple HTML strings within your .NET project, and IronPDF is able to be used in C#, F#, and VB.NET. Thanks to the use of the ChromePdfRenderer class, you can be sure that any PDF documents you render from HTML strings will come out pixel-perfect. With IronPDF's powerful HTML to PDF conversion features, you create high-quality PDF files tailored to fit your personal needs.

The 4 Steps to Converting HTML String to PDF

Import the IronPDF library.
Initialize a new ChromePdfRenderer object.
Use the RenderHtmlAsPdf method.
Save the PDF using PdfDocument.SaveAs.

See the code example below for more details:

The first step to converting an HTML string to a PDF in C# is ensuring that you have the IronPDF library properly set up and working within your project. By including using IronPdf, we make sure we can access the classes needed from the IronPDF library to carry out HTML to PDF conversion. The next line, Installation.EnableWebSecurity = true, is conceptually used to disable local disk access or cross-origin requests, ensuring secure operations. (Note: This line was missing from the example but usually pertains to configuration settings to secure PDF rendering operations.)

The example demonstrates how to create an instance of ChromePdfRenderer which handles the conversion of HTML to PDF. The RenderHtmlAsPdf method is used to convert a simple HTML string ("<h1>Hello World</h1>") into a PDF document. This document is saved to the disk using the SaveAs method.

In the advanced example, IronPDF is shown to handle HTML content containing external assets such as images, CSS, and JavaScript. To load these assets, the optional BasePath parameter is used, specifying the directory containing the required files. The resulting PDF, which includes the external assets, is saved using the same SaveAs method. This code example highlights IronPDF's ability to handle both basic and complex HTML content, making it an efficient tool for generating PDFs programmatically.

Learn to Convert HTML Strings to PDF in C# with IronPDF

Converting a URL to a PDF

using IronPdf;

// Instantiate Renderer
var renderer = new ChromePdfRenderer();

// Create a PDF from a URL or local file path
var pdf = renderer.RenderUrlAsPdf("https://ironpdf.com/");

// Export to a file or Stream
pdf.SaveAs("url.pdf");

Imports IronPdf

' Instantiate Renderer
Dim renderer As New ChromePdfRenderer()

' Create a PDF from a URL or local file path
Dim pdf = renderer.RenderUrlAsPdf("https://ironpdf.com/")

' Export to a file or Stream
pdf.SaveAs("url.pdf")

PM > Install-Package IronPdf

Install-Package IronPdf

IronPDF makes it very straightforward to render HTML from existing URLs as PDF documents. There is a very high level of support for JavaScript, images, forms, and CSS.

Rendering PDFs from ASP.NET URLs that accept query string variables can facilitate smooth PDF development as a collaborative effort between designers and coders.

Steps to Convert URL to PDF in C#

Download the IronPDF URL to PDF Conversion Library
Install the library with NuGet to test its features
Render PDFs from ASP.NET URLs that accept query string variables using IronPDF
Create a PDF document directly from a URL with IronPDF
View and validate your PDF output document easily.

Learn How to Convert URLs to PDF with IronPDF

PDF Generation Settings

using IronPdf;
using IronPdf.Engines.Chrome;

// Instantiate Renderer
var renderer = new ChromePdfRenderer();

// Many rendering options to use to customize!
renderer.RenderingOptions.SetCustomPaperSizeInInches(12.5, 20);
renderer.RenderingOptions.PrintHtmlBackgrounds = true;
renderer.RenderingOptions.PaperOrientation = IronPdf.Rendering.PdfPaperOrientation.Landscape;
renderer.RenderingOptions.Title = "My PDF Document Name";
renderer.RenderingOptions.EnableJavaScript = true;
renderer.RenderingOptions.WaitFor.RenderDelay(50); // in milliseconds
renderer.RenderingOptions.CssMediaType = IronPdf.Rendering.PdfCssMediaType.Screen;
renderer.RenderingOptions.FitToPaperMode = FitToPaperModes.Zoom;
renderer.RenderingOptions.Zoom = 100;
renderer.RenderingOptions.CreatePdfFormsFromHtml = true;

// Supports margin customization!
renderer.RenderingOptions.MarginTop = 40; //millimeters
renderer.RenderingOptions.MarginLeft = 20; //millimeters
renderer.RenderingOptions.MarginRight = 20; //millimeters
renderer.RenderingOptions.MarginBottom = 40; //millimeters

// Can set FirstPageNumber if you have a cover page
renderer.RenderingOptions.FirstPageNumber = 1; // use 2 if a cover page will be appended

// Settings have been set, we can render:
renderer.RenderHtmlFileAsPdf("assets/wikipedia.html").SaveAs("output/my-content.pdf");

Imports IronPdf
Imports IronPdf.Engines.Chrome

' Instantiate Renderer
Dim renderer = New ChromePdfRenderer()

' Many rendering options to use to customize!
renderer.RenderingOptions.SetCustomPaperSizeInInches(12.5, 20)
renderer.RenderingOptions.PrintHtmlBackgrounds = True
renderer.RenderingOptions.PaperOrientation = IronPdf.Rendering.PdfPaperOrientation.Landscape
renderer.RenderingOptions.Title = "My PDF Document Name"
renderer.RenderingOptions.EnableJavaScript = True
renderer.RenderingOptions.WaitFor.RenderDelay(50) ' in milliseconds
renderer.RenderingOptions.CssMediaType = IronPdf.Rendering.PdfCssMediaType.Screen
renderer.RenderingOptions.FitToPaperMode = FitToPaperModes.Zoom
renderer.RenderingOptions.Zoom = 100
renderer.RenderingOptions.CreatePdfFormsFromHtml = True

' Supports margin customization!
renderer.RenderingOptions.MarginTop = 40 'millimeters
renderer.RenderingOptions.MarginLeft = 20 'millimeters
renderer.RenderingOptions.MarginRight = 20 'millimeters
renderer.RenderingOptions.MarginBottom = 40 'millimeters

' Can set FirstPageNumber if you have a cover page
renderer.RenderingOptions.FirstPageNumber = 1 ' use 2 if a cover page will be appended

' Settings have been set, we can render:
renderer.RenderHtmlFileAsPdf("assets/wikipedia.html").SaveAs("output/my-content.pdf")

PM > Install-Package IronPdf

Install-Package IronPdf

IronPDF aims to be as flexible as possible for the developer.

In this C# PDF Generation Tutorial Example, we show the balance between providing an API that automates internal functionality and providing one that gives you control.

IronPDF supports many customizations for generated PDF files, including page sizing, page margins, header/footer content, content scaling, CSS rulesets, and JavaScript execution.

We want developers to be able to control how Chrome turns a web page into a PDF. The ChromePdfRenderer Class Overview makes this possible.

Examples of settings available on the ChromePdfRenderer class include settings for margins, headers, footers, paper size, and form creation.

The code example above demonstrates how to create a PDF document from a web page using the IronPDF library.
This involves setting up a renderer with specific options like paper size, margins, header, and footer.
The ChromePdfRenderer class is used to render the URL to a PDF.
The resulting PDF document is then saved to a file named "output.pdf".

Explore Pixel-Perfect HTML to PDF Guide with IronPDF

Rendering ASPX Pages as PDFs

using IronPdf;

private void Form1_Load(object sender, EventArgs e)
{
    //Changes the ASPX output into a pdf instead of HTML
    IronPdf.AspxToPdf.RenderThisPageAsPdf();
}

Imports IronPdf

Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
    'Changes the ASPX output into a pdf instead of HTML
    AspxToPdf.RenderThisPageAsPdf()
End Sub

PM > Install-Package IronPdf

Install-Package IronPdf

Using the IronPDF library, ASP.NET web pages can be rendered to PDF instead of HTML by adding a single line of code to the Page_Load event.

This example shows how IronPDF can produce complex, data-driven PDFs that are designed and tested as HTML first for simplicity.

IronPDF's ASPX to PDF Conversion functionality allows you to call a single method within an ASPX page and have it return a PDF instead of HTML.

You can code the PDF to either display "in-browser," or to behave as a file download.

Learn How to Render ASPX Pages as PDFs with IronPDF

HTML or Image File to PDF

using IronPdf;

// Instantiate Renderer
var renderer = new ChromePdfRenderer();

// Create a PDF from an existing HTML file using C#
var pdf = renderer.RenderHtmlFileAsPdf("example.html");

// Export to a file or Stream
pdf.SaveAs("output.pdf");

Imports IronPdf

' Instantiate Renderer
Dim renderer As New ChromePdfRenderer()

' Create a PDF from an existing HTML file using VB
Dim pdf = renderer.RenderHtmlFileAsPdf("example.html")

' Export to a file or Stream
pdf.SaveAs("output.pdf")

PM > Install-Package IronPdf

Install-Package IronPdf

IronPDF is a powerful .NET library capable of converting HTML files into high-quality PDF files. With IronPDF, you can render HTML files to PDF in just a couple of lines, and thanks to its support for modern web standards, the resulting PDF files will come out pixel-perfect. Leveraging IronPDF's powerful HTML file to PDF feature is easy thanks to its use of the ChromePdfRenderer class, which handles the conversion of HTML to PDF with ease.

Steps to Convert HTML Files to PDF with IronPDF

Install the C# IronPDF library to convert HTML to PDF

using IronPdf;

var renderer = new ChromePdfRenderer();

var pdf = renderer.RenderHtmlFileAsPdf("example.html");

pdf.SaveAs("output.pdf");

This code creates a new PDF file that has been rendered from an HTML file. To do this, we must first ensure that the IronPDF library is installed and included within your project through the using IronPdf line. Next, initialize the ChromePdfRenderer class, which provides the functionality to render HTML content as a PDF. This class ensures that the original quality of the HTML file is not lost in the conversion process.

Once the renderer is instantiated, you can convert an existing HTML file into a PDF using the RenderHtmlFileAsPdf method. In this example, the HTML file "example.html" is passed to the method, creating a PDF object. Finally, to save the generated PDF, use the SaveAs method, specifying the desired file name and location. This simple process allows you to easily generate PDFs from HTML files in your C# applications.

Learn to Convert HTML Files to PDF with IronPDF

ASPX To PDF Settings

using IronPdf;

var PdfOptions = new IronPdf.ChromePdfRenderOptions()
{
    CreatePdfFormsFromHtml = true,
    EnableJavaScript = false,
    Title = "My ASPX Page Rendered as a PDF"
    //.. many more options available
};

AspxToPdf.RenderThisPageAsPdf(AspxToPdf.FileBehavior.Attachment, "MyPdfFile.pdf", PdfOptions);

Imports IronPdf

Dim PdfOptions = New IronPdf.ChromePdfRenderOptions() With {
    .CreatePdfFormsFromHtml = True,
    .EnableJavaScript = False,
    .Title = "My ASPX Page Rendered as a PDF"
    '.. many more options available
}

AspxToPdf.RenderThisPageAsPdf(AspxToPdf.FileBehavior.Attachment, "MyPdfFile.pdf", PdfOptions)

PM > Install-Package IronPdf

Install-Package IronPdf

This example demonstrates how the user can change PDF print options to turn a form into HTML.

IronPDF's ASPX to PDF Conversion Guide functionality has many options available for rendering HTML to PDF from a string or a file.

Two options of particular importance are:

Allowing developers to specify if HTML forms should be rendered as interactive PDF forms during conversion.
Allowing developers to specify if the PDF should be displayed "in browser," or as a file download.

Discover How to Convert ASPX to PDF with IronPDF

Image To PDF

using IronPdf;
using System.IO;
using System.Linq;

// One or more images as IEnumerable. This example selects all JPEG images in a specific 'assets' folder.
var imageFiles = Directory.EnumerateFiles("assets").Where(f => f.EndsWith(".jpg") || f.EndsWith(".jpeg"));

// Converts the images to a PDF and save it.
ImageToPdfConverter.ImageToPdf(imageFiles).SaveAs("composite.pdf");

// Also see PdfDocument.RasterizeToImageFiles() method to flatten a PDF to images or thumbnails

Imports IronPdf
Imports System.IO
Imports System.Linq

' One or more images as IEnumerable. This example selects all JPEG images in a specific 'assets' folder.
Dim imageFiles = Directory.EnumerateFiles("assets").Where(Function(f) f.EndsWith(".jpg") OrElse f.EndsWith(".jpeg"))

' Converts the images to a PDF and save it.
ImageToPdfConverter.ImageToPdf(imageFiles).SaveAs("composite.pdf")

' Also see PdfDocument.RasterizeToImageFiles() method to flatten a PDF to images or thumbnails

PM > Install-Package IronPdf

Install-Package IronPdf

Given a single image located on a computer at C:\images\example.png, you can quickly convert it into a PDF document by calling the IronPdf.ImageToPdfConverter.ImageToPdf method with its file path:

You can also convert multiple images into a single PDF document by passing a collection of image paths to ImageToPdfConverter.ImageToPdf:

To explore more about converting images to PDFs using IronPDF for enhancing your applications, or to discover the entire suite of developer tools offered by Iron Software, including IronBarcode, IronOCR, and more, visit the Iron Software website.

Learn to Convert Images to PDF with IronPDF

System.IO.Directory.EnumerateFiles

ImageToPdfConverter.ImageToPdf

HTML Headers & Footers

using IronPdf;
using System;

// Instantiate Renderer
var renderer = new IronPdf.ChromePdfRenderer();


// Build a footer using html to style the text
// mergeable fields are:
// {page} {total-pages} {url} {date} {time} {html-title} & {pdf-title}
renderer.RenderingOptions.HtmlFooter = new HtmlHeaderFooter()
{
    MaxHeight = 15, //millimeters
    HtmlFragment = "<center><i>{page} of {total-pages}<i></center>",
    DrawDividerLine = true
};

// Use sufficient MarginBottom to ensure that the HtmlFooter does not overlap with the main PDF page content.
renderer.RenderingOptions.MarginBottom = 25; //mm


// Build a header using an image asset
// Note the use of BaseUrl to set a relative path to the assets
renderer.RenderingOptions.HtmlHeader = new HtmlHeaderFooter()
{
    MaxHeight = 20, //millimeters
    HtmlFragment = "<img src='logo.png'>",
    BaseUrl = new Uri(@"C:\assets\images\").AbsoluteUri
};

// Use sufficient MarginTop to ensure that the HtmlHeader does not overlap with the main PDF page content.
renderer.RenderingOptions.MarginTop = 25; //mm

Imports IronPdf
Imports System

' Instantiate Renderer
Dim renderer = New IronPdf.ChromePdfRenderer()

' Build a footer using html to style the text
' mergeable fields are:
' {page} {total-pages} {url} {date} {time} {html-title} & {pdf-title}
renderer.RenderingOptions.HtmlFooter = New HtmlHeaderFooter() With {
    .MaxHeight = 15, 'millimeters
    .HtmlFragment = "<center><i>{page} of {total-pages}<i></center>",
    .DrawDividerLine = True
}

' Use sufficient MarginBottom to ensure that the HtmlFooter does not overlap with the main PDF page content.
renderer.RenderingOptions.MarginBottom = 25 'mm

' Build a header using an image asset
' Note the use of BaseUrl to set a relative path to the assets
renderer.RenderingOptions.HtmlHeader = New HtmlHeaderFooter() With {
    .MaxHeight = 20,  'millimeters
    .HtmlFragment = "<img src='logo.png'>",
    .BaseUrl = New Uri("C:\assets\images\").AbsoluteUri
}

' Use sufficient MarginTop to ensure that the HtmlHeader does not overlap with the main PDF page content.
renderer.RenderingOptions.MarginTop = 25 'mm

PM > Install-Package IronPdf

Install-Package IronPdf

HTML headers and footers provide a flexible method for creating dynamic headers and footers for your PDF documents. By adding headers and footers through this method, developers have complete control over how their headers and footers look, as they are rendered as independent HTML documents capable of containing their own assets and stylesheets.

Steps to Add Custom HTML Headers and Footers in a PDF with IronPDF

To begin with, you first need to create an instance of the ChromePdfRenderer class, which handles the rendering of HTML content into a pixel-perfect PDF document.

Next, define a footer using the HtmlHeaderFooter class, where you specify the MaxHeight, HTML content for the footer (which in our case includes page numbering), and base URL for image resolution. The footer is styled to display centered page information.

To avoid overlap between the footer and the PDF's main content, set a bottom margin using the MarginBottom property. Similarly, create a header that includes an image (such as a logo) by using the HtmlHeaderFooter class. Here we have set up a BaseUrl to the directory containing your image asset, allowing for proper image resolution during rendering.

Finally, use the MarginTop property to set a top margin that prevents overlap between the header and the content. This example demonstrates how easy it is to implement custom HTML headers and footers in your PDF documents with IronPDF.

Learn to Add HTML Headers & Footers to PDFs with IronPDF

Simple Headers & Footers

using IronPdf;

// Initiate PDF Renderer
var renderer = new ChromePdfRenderer();

// Add a header to every page easily
renderer.RenderingOptions.FirstPageNumber = 1; // use 2 if a cover page  will be appended
renderer.RenderingOptions.TextHeader.DrawDividerLine = true;
renderer.RenderingOptions.TextHeader.CenterText = "{url}";
renderer.RenderingOptions.TextHeader.Font = IronSoftware.Drawing.FontTypes.Helvetica;
renderer.RenderingOptions.TextHeader.FontSize = 12;
renderer.RenderingOptions.MarginTop = 25; //create 25mm space for header

// Add a footer too
renderer.RenderingOptions.TextFooter.DrawDividerLine = true;
renderer.RenderingOptions.TextFooter.Font = IronSoftware.Drawing.FontTypes.Arial;
renderer.RenderingOptions.TextFooter.FontSize = 10;
renderer.RenderingOptions.TextFooter.LeftText = "{date} {time}";
renderer.RenderingOptions.TextFooter.RightText = "{page} of {total-pages}";
renderer.RenderingOptions.MarginTop = 25; //create 25mm space for footer

// Mergeable fields are:
// {page} {total-pages} {url} {date} {time} {html-title} & {pdf-title}

Imports IronPdf

' Initiate PDF Renderer
Dim renderer = New ChromePdfRenderer()

' Add a header to every page easily
renderer.RenderingOptions.FirstPageNumber = 1 ' use 2 if a cover page will be appended
renderer.RenderingOptions.TextHeader.DrawDividerLine = True
renderer.RenderingOptions.TextHeader.CenterText = "{url}"
renderer.RenderingOptions.TextHeader.Font = IronSoftware.Drawing.FontTypes.Helvetica
renderer.RenderingOptions.TextHeader.FontSize = 12
renderer.RenderingOptions.MarginTop = 25 'create 25mm space for header

' Add a footer too
renderer.RenderingOptions.TextFooter.DrawDividerLine = True
renderer.RenderingOptions.TextFooter.Font = IronSoftware.Drawing.FontTypes.Arial
renderer.RenderingOptions.TextFooter.FontSize = 10
renderer.RenderingOptions.TextFooter.LeftText = "{date} {time}"
renderer.RenderingOptions.TextFooter.RightText = "{page} of {total-pages}"
renderer.RenderingOptions.MarginTop = 25 'create 25mm space for footer

' Mergeable fields are:
' {page} {total-pages} {url} {date} {time} {html-title} & {pdf-title}

PM > Install-Package IronPdf

Install-Package IronPdf

There are two methods through which headers and footers may be added to a PDF document. They can either be added as a classic text format, with the option to merge in dynamic data. Or, they can be added through the much more flexible HTML format, which allows developers to render dynamic headers and footers through their HTML content.

Steps to Add Headers and Footers to PDFs with IronPDF

Today we will be looking at how you can add classic text headers and footers into your PDF documents in just a few simple steps. The first step towards adding customized headers and footers into your PDF documents is to ensure that the IronPdf library is included in your project with the using IronPdf; statement. Then, instantiate the ChromePdfRenderer, which provides the functionality to render your HTML content in pixel-perfect PDF documents.

Next, configure the header settings. The FirstPageNumber property allows you to specify the starting page number, accommodating for a cover page if needed. The TextHeader properties enable you to customize the appearance, such as drawing a divider line, centering text (in this case, the document URL), selecting the font type and size, and creating a margin at the top of the page for the header.

After configuring the header, set up the footer using the TextFooter properties. Similar to the header, you can draw a divider line, choose the font type and size, and include dynamic content like the current date, time, and page numbers with total pages. Finally, a margin is created at the bottom of the page to accommodate the footer.

By following these steps, you can enhance your PDF documents with informative headers and footers that improve their professionalism and readability.

Discover How to Add Headers and Footers with IronPDF

Editing PDFs

using IronPdf;
using System.Collections.Generic;

// Instantiate Renderer
var renderer = new ChromePdfRenderer();

// Join Multiple Existing PDFs into a single document
var pdfs = new List<PdfDocument>();
pdfs.Add(PdfDocument.FromFile("A.pdf"));
pdfs.Add(PdfDocument.FromFile("B.pdf"));
pdfs.Add(PdfDocument.FromFile("C.pdf"));
var pdf = PdfDocument.Merge(pdfs);
pdf.SaveAs("merged.pdf");

// Add a cover page
pdf.PrependPdf(renderer.RenderHtmlAsPdf("<h1>Cover Page</h1><hr>"));

// Remove the last page from the PDF and save again
pdf.RemovePage(pdf.PageCount - 1);
pdf.SaveAs("merged.pdf");

// Copy pages 5-7 and save them as a new document.
pdf.CopyPages(4, 6).SaveAs("excerpt.pdf");

foreach (var eachPdf in pdfs)
{
    eachPdf.Dispose();
}

Imports IronPdf
Imports System.Collections.Generic

' Instantiate Renderer
Dim renderer = New ChromePdfRenderer()

' Join Multiple Existing PDFs into a single document
Dim pdfs = New List(Of PdfDocument)()
pdfs.Add(PdfDocument.FromFile("A.pdf"))
pdfs.Add(PdfDocument.FromFile("B.pdf"))
pdfs.Add(PdfDocument.FromFile("C.pdf"))
Dim pdf = PdfDocument.Merge(pdfs)
pdf.SaveAs("merged.pdf")

' Add a cover page
pdf.PrependPdf(renderer.RenderHtmlAsPdf("<h1>Cover Page</h1><hr>"))

' Remove the last page from the PDF and save again
pdf.RemovePage(pdf.PageCount - 1)
pdf.SaveAs("merged.pdf")

' Copy pages 5-7 and save them as a new document.
pdf.CopyPages(4, 6).SaveAs("excerpt.pdf")

For Each eachPdf In pdfs
    eachPdf.Dispose()
Next

PM > Install-Package IronPdf

Install-Package IronPdf

IronPDF offers 50+ features for reading and editing PDFs. The most popular are merging PDFs, cloning pages, and extracting text from rotated content.

IronPDF also allows its users to add watermarks, rotate pages, add annotations, digitally sign PDF pages, create new PDF documents, attach cover pages, customize PDF sizes, and much more when generating and formatting PDF files. Moreover, it supports conversion of PDFs into all conventional image file types, including JPG, BMP, JPEG, GIF, PNG, TIFF, etc.

Read the C# PDF editing tutorial to learn how to make full use of IronPDF to modify PDF documents to best suit project requirements.

How to Edit PDF files in C#

Install the C# library that can edit PDF files
Utilize FromFile method to import multiple PDF files
Access and modify PDF file using intuitive APIs in C#
Save the updated version as a new PDF using C#
View the newly edited PDF document

Learn to Add Headers and Footers in PDFs with IronPDF

Passwords, Security & Metadata

using IronPdf;

// Open an Encrypted File, alternatively create a new PDF from Html
var pdf = PdfDocument.FromFile("encrypted.pdf", "password");

// Get file metadata
System.Collections.Generic.List<string> metadatakeys = pdf.MetaData.Keys(); // returns {"Title", "Creator", ...}

// Remove file metadata
pdf.MetaData.RemoveMetaDataKey("Title");
metadatakeys = pdf.MetaData.Keys(); // return {"Creator", ...} // title was deleted

// Edit file metadata
pdf.MetaData.Author = "Satoshi Nakamoto";
pdf.MetaData.Keywords = "SEO, Friendly";
pdf.MetaData.ModifiedDate = System.DateTime.Now;

// The following code makes a PDF read only and will disallow copy & paste and printing
pdf.SecuritySettings.RemovePasswordsAndEncryption();
pdf.SecuritySettings.MakePdfDocumentReadOnly("secret-key");
pdf.SecuritySettings.AllowUserAnnotations = false;
pdf.SecuritySettings.AllowUserCopyPasteContent = false;
pdf.SecuritySettings.AllowUserFormData = false;
pdf.SecuritySettings.AllowUserPrinting = IronPdf.Security.PdfPrintSecurity.FullPrintRights;

// Change or set the document encryption password
pdf.SecuritySettings.OwnerPassword = "top-secret"; // password to edit the pdf
pdf.SecuritySettings.UserPassword = "sharable"; // password to open the pdf
pdf.SaveAs("secured.pdf");

Imports IronPdf

' Open an Encrypted File, alternatively create a new PDF from Html
Dim pdf = PdfDocument.FromFile("encrypted.pdf", "password")

' Get file metadata
Dim metadatakeys As System.Collections.Generic.List(Of String) = pdf.MetaData.Keys() ' returns {"Title", "Creator", ...}

' Remove file metadata
pdf.MetaData.RemoveMetaDataKey("Title")
metadatakeys = pdf.MetaData.Keys() ' return {"Creator", ...} ' title was deleted

' Edit file metadata
pdf.MetaData.Author = "Satoshi Nakamoto"
pdf.MetaData.Keywords = "SEO, Friendly"
pdf.MetaData.ModifiedDate = System.DateTime.Now

' The following code makes a PDF read only and will disallow copy & paste and printing
pdf.SecuritySettings.RemovePasswordsAndEncryption()
pdf.SecuritySettings.MakePdfDocumentReadOnly("secret-key")
pdf.SecuritySettings.AllowUserAnnotations = False
pdf.SecuritySettings.AllowUserCopyPasteContent = False
pdf.SecuritySettings.AllowUserFormData = False
pdf.SecuritySettings.AllowUserPrinting = IronPdf.Security.PdfPrintSecurity.FullPrintRights

' Change or set the document encryption password
pdf.SecuritySettings.OwnerPassword = "top-secret" ' password to edit the pdf
pdf.SecuritySettings.UserPassword = "sharable" ' password to open the pdf
pdf.SaveAs("secured.pdf")

PM > Install-Package IronPdf

Install-Package IronPdf

IronPDF provides developers with strong PDF security options, supporting the customization and setting of PDF metadata, passwords, permissions, and more. With IronPDF's passwords, security, and metadata options, you can create custom permissions and security levels to fit the needs of your PDF document. This is done thanks to the use of classes such as the SecuritySettings and MetaData classes. Some options include limiting the PDF documents to be unprintable, setting them to read-only, and 128-bit encryption, and password protection of your PDF documents.

Setting custom metadata works by implementing the MetaData class to access the various PDF metadata options, and setting them with your customized values. This includes changing the author, keywords, modified data, and more. Setting custom security settings includes the ability to set custom user and owner passwords, printing permissions, read-only mode, and more.

5 Steps to setting PDF passwords, metadata, and security

var pdf = PdfDocument.FromFile("encrypted.pdf", "password");
System.Collections.Generic.List<string> metadatakeys = pdf.MetaData.Keys;
var metadatakeys = pdf.MetaData.Keys;
pdf.MetaData.Author = "Satoshi Nakamoto";
pdf.SecuritySettings.MakePdfDocumentReadOnly("secret-key");

In order to begin customizing the security of your PDF documents, you must first load an existing PDF or create a new one. Here, we have loaded an existing password-protected PDF document, where we have input the password needed to open the PDF document. Once the PDF is loaded, we then use pdf.MetaData.Keys to get the PDF's current metadata. To remove existing PDF metadata values, use the RemoveMetaDataKey method. To begin setting new metadata values, use pdf.MetaData.metadataField (e.g., pdf.MetaData.Keywords), and then just assign the new value to it. Metadata fields such as Title and Keywords take string values, whereas the ModifiedDate field takes datetime values.

Next, we have set new security settings using the SecuritySettings class. As you can see, there are a variety of settings that you can set here. This gives you full control over the permissions and security levels for each PDF document you work with. To access these settings, you just need to make sure you use pdf.SecuritySettings, followed by the setting you want to adjust. For example, the MakePdfDocumentReadOnly method sets the PDF document to be read-only, encrypting the content at 128-bit. Other options for SecuritySettings include:

AllowUserAnnotations: Controls whether or not users can annotate the PDF.
AllowUserPrinting: Controls printing permissions for the document.
AllowUserFormData: Sets the permissions for whether users can fill in forms.
OwnerPassword: Sets the owner password for the PDF, which is used to disable or enable the other security settings.
UserPassword: Sets the user password for the PDF, which must be entered in order to open or print the document.

Once you have set the custom metadata, passwords, and security settings for your PDF document, use the pdf.SaveAs method to save your PDF to a specified location.

Learn to Handle PDF Metadata with IronPDF

PDF Watermarking

using IronPdf;

// Stamps a Watermark onto a new or existing PDF
var renderer = new ChromePdfRenderer();

var pdf = renderer.RenderUrlAsPdf("https://www.nuget.org/packages/IronPdf");
pdf.ApplyWatermark("<h2 style='color:red'>SAMPLE</h2>", 30, IronPdf.Editing.VerticalAlignment.Middle, IronPdf.Editing.HorizontalAlignment.Center);
pdf.SaveAs("watermarked.pdf");

Imports IronPdf

' Stamps a Watermark onto a new or existing PDF
Dim renderer = New ChromePdfRenderer()

Dim pdf = renderer.RenderUrlAsPdf("https://www.nuget.org/packages/IronPdf")
pdf.ApplyWatermark("<h2 style='color:red'>SAMPLE</h2>", 30, IronPdf.Editing.VerticalAlignment.Middle, IronPdf.Editing.HorizontalAlignment.Center)
pdf.SaveAs("watermarked.pdf")

PM > Install-Package IronPdf

Install-Package IronPdf

IronPDF provides methods to 'watermark' PDF documents with HTML.

Using the ApplyWatermark method, developers can add an HTML-based watermark to a PDF file. As shown in the example above, the HTML code for the watermark goes as the first argument to the method. Additional arguments to ApplyWatermark control the opacity, rotation, and alignment of the watermark.

Use the ApplyWatermark method for a quick way to overlay an HTML watermark on a PDF. For example, use ApplyWatermark to:

Add HTML (text or image) watermarks to PDFs
Apply the watermark across the pages of the PDF
Set the opacity of the watermark
Adjust the rotation and alignment of the watermark

How to Add Watermarks to PDF Files in C#

Download and install the IronPDF library from NuGet.
Create a new PdfDocument or use an existing PdfDocument file.
Call the ApplyWatermark method to add watermarks to the PDF.
Export the PDF file by calling SaveAs.

Example C# Code to Apply a Watermark Using IronPDF

Ensure you have installed the IronPDF library in your project. You can find more detailed instructions on the IronPDF NuGet package page.

Explanation of the Code:

We start by importing the IronPdf library, which provides all necessary classes and methods for PDF manipulation.
A PDF document is created or loaded using PdfDocument.FromFile, specifying the file path of the existing PDF.
HTML content is defined for the watermark. In this case, the watermark displays "Confidential" with specific styling.
The ApplyWatermark method is used to overlay the watermark on the PDF. Its arguments allow for customization:
- The first argument is the HTML content of the watermark.
- opacity: Determines the transparency of the watermark.
- The vertical and horizontal alignment arguments position the watermark on the page.
Finally, the SaveAs method exports the modified PDF to a new file.

In conclusion, the IronPDF ApplyWatermark method allows for straightforward watermarking of PDF documents using HTML. This approach is flexible, accommodating various customization needs for positioning, styling, and opacity of watermarks.

Explore Custom Watermarking with IronPDF

Backgrounds & Foregrounds

using IronPdf;

// With IronPDF, we can easily merge 2 PDF files using one as a background or foreground
var renderer = new ChromePdfRenderer();
var pdf = renderer.RenderUrlAsPdf("https://www.nuget.org/packages/IronPdf");
pdf.AddBackgroundPdf(@"MyBackground.pdf");
pdf.AddForegroundOverlayPdfToPage(0, @"MyForeground.pdf", 0);
pdf.SaveAs("complete.pdf");

Imports IronPdf

' With IronPDF, we can easily merge 2 PDF files using one as a background or foreground
Dim renderer = New ChromePdfRenderer()
Dim pdf = renderer.RenderUrlAsPdf("https://www.nuget.org/packages/IronPdf")
pdf.AddBackgroundPdf("MyBackground.pdf")
pdf.AddForegroundOverlayPdfToPage(0, "MyForeground.pdf", 0)
pdf.SaveAs("complete.pdf")

PM > Install-Package IronPdf

Install-Package IronPdf

You may want to use a specific background and foreground as you create and render your PDF documents in IronPDF. In such a case, you can use an existing or rendered PDF as the background or foreground for another PDF document. This is particularly useful for design consistency and templating.

This example shows you how to use a PDF document as the background or foreground of another PDF document.

You can do this in C# by loading or creating a multi-page PDF as an IronPdf.PdfDocument object.

You can add backgrounds using PdfDocument.AddBackgroundPdf. For more details on background insertion methods, refer to the IronPDF.PdfDocument background documentation; it describes several background insertion methods and their overrides. This adds a background to each page of your working PDF. The background is copied from a page in another PDF document.

You can add foregrounds, also known as "Overlays," using PdfDocument.AddForegroundOverlayPdfToPage. For detailed information on foreground insertion methods, consult the IronPDF.PdfDocument overlay documentation.

This code illustrates how to integrate additional design elements on top of a base PDF using IronPDF. Always refer to the official documentation for more advanced techniques and additional options.

Explore our Guide on Adding Backgrounds and Foregrounds

Form Data

using IronPdf;
using System;

// Step 1.  Creating a PDF with editable forms from HTML using form and input tags
// Radio Button and Checkbox can also be implemented with input type 'radio' and 'checkbox'
const string formHtml = @"
    <html>
        <body>
            <h2>Editable PDF  Form</h2>
            <form>
              First name: <br> <input type='text' name='firstname' value=''> <br>
              Last name: <br> <input type='text' name='lastname' value=''> <br>
              <br>
              <p>Please specify your gender:</p>
              <input type='radio' id='female' name='gender' value= 'Female'>
                <label for='female'>Female</label> <br>
                <br>
              <input type='radio' id='male' name='gender' value='Male'>
                <label for='male'>Male</label> <br>
                <br>
              <input type='radio' id='non-binary/other' name='gender' value='Non-Binary / Other'>
                <label for='non-binary/other'>Non-Binary / Other</label>
              <br>

              <p>Please select all medical conditions that apply:</p>
              <input type='checkbox' id='condition1' name='Hypertension' value='Hypertension'>
              <label for='condition1'> Hypertension</label><br>
              <input type='checkbox' id='condition2' name='Heart Disease' value='Heart Disease'>
              <label for='condition2'> Heart Disease</label><br>
              <input type='checkbox' id='condition3' name='Stoke' value='Stoke'>
              <label for='condition3'> Stoke</label><br>
              <input type='checkbox' id='condition4' name='Diabetes' value='Diabetes'>
              <label for='condition4'> Diabetes</label><br>
              <input type='checkbox' id='condition5' name='Kidney Disease' value='Kidney Disease'>
              <label for='condition5'> Kidney Disease</label><br>
            </form>
        </body>
    </html>";

// Instantiate Renderer
var renderer = new ChromePdfRenderer();
renderer.RenderingOptions.CreatePdfFormsFromHtml = true;
renderer.RenderHtmlAsPdf(formHtml).SaveAs("BasicForm.pdf");

// Step 2. Reading and Writing PDF form values.
var FormDocument = PdfDocument.FromFile("BasicForm.pdf");

// Set and Read the value of the "firstname" field
var FirstNameField = FormDocument.Form.FindFormField("firstname");
FirstNameField.Value = "Minnie";
Console.WriteLine("FirstNameField value: {0}", FirstNameField.Value);

// Set and Read the value of the "lastname" field
var LastNameField = FormDocument.Form.FindFormField("lastname");
LastNameField.Value = "Mouse";
Console.WriteLine("LastNameField value: {0}", LastNameField.Value);

FormDocument.SaveAs("FilledForm.pdf");

Imports IronPdf
Imports System

' Step 1.  Creating a PDF with editable forms from HTML using form and input tags
' Radio Button and Checkbox can also be implemented with input type 'radio' and 'checkbox'
Const formHtml As String = "
    <html>
        <body>
            <h2>Editable PDF  Form</h2>
            <form>
              First name: <br> <input type='text' name='firstname' value=''> <br>
              Last name: <br> <input type='text' name='lastname' value=''> <br>
              <br>
              <p>Please specify your gender:</p>
              <input type='radio' id='female' name='gender' value= 'Female'>
                <label for='female'>Female</label> <br>
                <br>
              <input type='radio' id='male' name='gender' value='Male'>
                <label for='male'>Male</label> <br>
                <br>
              <input type='radio' id='non-binary/other' name='gender' value='Non-Binary / Other'>
                <label for='non-binary/other'>Non-Binary / Other</label>
              <br>

              <p>Please select all medical conditions that apply:</p>
              <input type='checkbox' id='condition1' name='Hypertension' value='Hypertension'>
              <label for='condition1'> Hypertension</label><br>
              <input type='checkbox' id='condition2' name='Heart Disease' value='Heart Disease'>
              <label for='condition2'> Heart Disease</label><br>
              <input type='checkbox' id='condition3' name='Stoke' value='Stoke'>
              <label for='condition3'> Stoke</label><br>
              <input type='checkbox' id='condition4' name='Diabetes' value='Diabetes'>
              <label for='condition4'> Diabetes</label><br>
              <input type='checkbox' id='condition5' name='Kidney Disease' value='Kidney Disease'>
              <label for='condition5'> Kidney Disease</label><br>
            </form>
        </body>
    </html>"

' Instantiate Renderer
Dim renderer = New ChromePdfRenderer()
renderer.RenderingOptions.CreatePdfFormsFromHtml = True
renderer.RenderHtmlAsPdf(formHtml).SaveAs("BasicForm.pdf")

' Step 2. Reading and Writing PDF form values.
Dim FormDocument = PdfDocument.FromFile("BasicForm.pdf")

' Set and Read the value of the "firstname" field
Dim FirstNameField = FormDocument.Form.FindFormField("firstname")
FirstNameField.Value = "Minnie"
Console.WriteLine("FirstNameField value: {0}", FirstNameField.Value)

' Set and Read the value of the "lastname" field
Dim LastNameField = FormDocument.Form.FindFormField("lastname")
LastNameField.Value = "Mouse"
Console.WriteLine("LastNameField value: {0}", LastNameField.Value)

FormDocument.SaveAs("FilledForm.pdf")

PM > Install-Package IronPdf

Install-Package IronPdf

Your business is spending too much on yearly subscriptions for PDF security and compliance. Consider IronSecureDoc, a Comprehensive PDF Security Solution, which provides solutions for managing SaaS services like digital signing, redaction, encryption, and protection, all for a one-time payment. Explore IronSecureDoc Documentation.

You can create editable PDF documents with IronPDF as easily as a normal document. The PdfForm class is a collection of user-editable form fields within a PDF document. It can be implemented into your PDF render to make it a form or an editable document.

This example shows you how to create editable PDF forms in IronPDF.

PDFs with editable forms can be created from HTML simply by adding <form>, <input>, and <textarea> tags to the document parts.

The PdfDocument.Form.FindFormField method can be used to read and write the value of any form field. The field's name attribute is given to that field in your HTML.

The PdfDocument.Form object can be used in two ways:

Populating Default Values: This can be used to set a default value for form fields that will be displayed in PDF viewers like Adobe Reader.
Reading User Input: After the user fills in the form, the form fields can be accessed and the data read back into your application.

In the example above, we first import the IronPdf library and define the HTML structure of a simple form with input fields for first name and last name, radio buttons for gender, and checkboxes for medical conditions. Using the ChromePdfRenderer with CreatePdfFormsFromHtml enabled, we convert this HTML content into a PDF document.

The rendered PDF is first saved as "BasicForm.pdf". The PdfDocument.Form object is then used to access and manipulate the form fields - here we set values for the first name and last name fields. Finally, the populated document is saved as "FilledForm.pdf", allowing it to be stored or shared with embedded editable fields.

Learn to Edit PDF Forms with IronPDF How-To Guide

Rasterize a PDF to Images

using IronPdf;
using IronSoftware.Drawing;

var pdf = PdfDocument.FromFile("Example.pdf");

// Extract all pages to a folder as image files
pdf.RasterizeToImageFiles(@"C:\image\folder\*.png");

// Dimensions and page ranges may be specified
pdf.RasterizeToImageFiles(@"C:\image\folder\example_pdf_image_*.jpg", 100, 80);

// Extract all pages as AnyBitmap objects
AnyBitmap[] pdfBitmaps = pdf.ToBitmap();

Imports IronPdf
Imports IronSoftware.Drawing

Dim pdf = PdfDocument.FromFile("Example.pdf")

' Extract all pages to a folder as image files
pdf.RasterizeToImageFiles("C:\image\folder\*.png")

' Dimensions and page ranges may be specified
pdf.RasterizeToImageFiles("C:\image\folder\example_pdf_image_*.jpg", 100, 80)

' Extract all pages as AnyBitmap objects
Dim pdfBitmaps As AnyBitmap() = pdf.ToBitmap()

PM > Install-Package IronPdf

Install-Package IronPdf

To convert a PDF document to images, call IronPDF's RasterizeToImageFiles method on a PdfDocument object. A PDF document can be loaded using the PdfDocument.FromFile method or one of the available PDF generation methods for .NET Core.

RasterizeToImageFiles renders each page of the PDF as a rasterized image. The first argument specifies the naming pattern to use for each image. Optional arguments can be used to customize the quality and dimensions for each image. Another option allows the method to convert selected pages from the PDF into images.

Line 13 of the featured code example demonstrates the ToBitmap method. Call this method on any PdfDocument object to quickly convert the PDF into AnyBitmap objects that can be saved to files or manipulated as needed.

How to Convert a PDF to Images in C#

Install the PDF to image C# library
Import existing PDF file with FromFile method
Convert PDF to image using RasterizeToImageFiles method
Specify save directory and image size
Check the output images

Learn to Rasterize PDFs to Images with IronPDF

Digitally Sign a PDF

using IronPdf;
using IronPdf.Signing;

// Cryptographically sign an existing PDF in 1 line of code!
new IronPdf.Signing.PdfSignature("Iron.p12", "123456").SignPdfFile("any.pdf");

/***** Advanced example for more control *****/

// Step 1. Create a PDF
var renderer = new ChromePdfRenderer();
var doc = renderer.RenderHtmlAsPdf("<h1>Testing 2048 bit digital security</h1>");

// Step 2. Create a Signature.
// You may create a .pfx or .p12 PDF signing certificate using Adobe Acrobat Reader.
// Read: https://helpx.adobe.com/acrobat/using/digital-ids.html

var signature = new IronPdf.Signing.PdfSignature("Iron.pfx", "123456")
{
    // Step 3. Optional signing options and a handwritten signature graphic
    SigningContact = "support@ironsoftware.com",
    SigningLocation = "Chicago, USA",
    SigningReason = "To show how to sign a PDF"
};

//Step 3. Sign the PDF with the PdfSignature. Multiple signing certificates may be used
doc.Sign(signature);

//Step 4. The PDF is not signed until saved to file, steam or byte array.
doc.SaveAs("signed.pdf");

Imports IronPdf
Imports IronPdf.Signing

' Cryptographically sign an existing PDF in 1 line of code!
Call (New IronPdf.Signing.PdfSignature("Iron.p12", "123456")).SignPdfFile("any.pdf")

'/***** Advanced example for more control *****/

' Step 1. Create a PDF
Dim renderer = New ChromePdfRenderer()
Dim doc = renderer.RenderHtmlAsPdf("<h1>Testing 2048 bit digital security</h1>")

' Step 2. Create a Signature.
' You may create a .pfx or .p12 PDF signing certificate using Adobe Acrobat Reader.
' Read: https://helpx.adobe.com/acrobat/using/digital-ids.html

Dim signature = New IronPdf.Signing.PdfSignature("Iron.pfx", "123456") With {
    ' Step 3. Optional signing options and a handwritten signature graphic
    .SigningContact = "support@ironsoftware.com",
    .SigningLocation = "Chicago, USA",
    .SigningReason = "To show how to sign a PDF"
}

'Step 3. Sign the PDF with the PdfSignature. Multiple signing certificates may be used
doc.Sign(signature)

'Step 4. The PDF is not signed until saved to file, steam or byte array.
doc.SaveAs("signed.pdf")

PM > Install-Package IronPdf

Install-Package IronPdf

Your business is spending too much on yearly subscriptions for PDF security and compliance. Consider IronSecureDoc, which provides solutions for managing SaaS services like digital signing, redaction, encryption, and protection, all for a one-time payment. Explore IronSecureDoc documentation.

Digitally signing a PDF document helps ensure the document's integrity by providing a method of adding authentication to the PDF itself. With IronPDF, you have several options when it comes to signing a new or existing PDF file. These include digitally signing the PDF document with a certificate, adding a graphical handwritten version of your signature to the PDF, stamping an image of the certificate on the PDF, or simply creating a signature form field on the PDF to prompt user signing.

Steps to Digitally Signing a PDF with IronPDF

The first step in this process is to either load in or create the PDF we want to sign. For this example, we create a new ChromePdfRenderer instance. This is IronPDF's powerful rendering engine used to render HTML, CSS, and JavaScript to PDF without losing quality. We then use the RenderHtmlAsPdf method to render our HTML string into a high-quality PDF document ready to be signed. The resulting PDF is stored in the doc variable.

Next, we need to create our signature. For this example, we sign our PDF document with a certificate. PdfSignature represents the digital signature object for signing the PDF, and it requires the path to the .pfx file we want to use for the signature and the password to access this file. We have included three optional properties: SigningContact adds an email or contact information to the signature metadata, SigningLocation represents where the document is signed, and SigningReason provides the reason for the document being signed.

Next, we sign the PDF document with the PdfSignature object we created. By calling the Sign method, we apply the signature to the PDF document in one easy line. Multiple signing certificates can be applied to the PDF document using this method.

Finally, we save the signed PDF document using the SaveAs method, which saves the PDF to the specified file location.

Discover How to Sign PDFs Securely with IronPDF.

What Is IronPDF for .NET?

Our .NET PDF Library solution is a dream for developers, especially software engineers who use C#. You can easily create a core pdf library for .NET.

IronPDF uses a .NET Chromium engine to render HTML pages to PDF files. There's no need to use complex APIs to position or design PDFs. IronPDF supports standard web documents HTML, ASPX, JS, CSS, and images.

It enables you to create a .NET PDF library using HTML5, CSS, JavaScript, and also images. You can edit, stamp, and add headers and footers to a PDF effortlessly. It also makes it easy to read PDF text and extract images!

Get Started

.NET PDF Library Features Using IronPDF

We’ve never seen a more accurate HTML to PDF converter! Our industry-leading PDF library has so many features and a rendering engine that enables heedlessness and embeddability in the Chrome / Webkit. No installation is required.

Create

Create PDF documents from HTML 4 and 5, CSS, and JavaScript
Generate PDF documents from URL
Load URL with custom network login credentials, UserAgents, Proxies, Cookies, HTTP headers, form variables allowing login behind HTML login forms
- Supports mainstream icon fonts (Fontello, Bootstrap, FontAwesome)
- Load external stylesheets and assets (HTTP, HTTPS, or filesystem) programmatically
Single and Multithreaded rendering
Custom ISO paper size with customizable orientations, margins, and color component

Edit Existing PDF Documents without Adobe Acrobat

Read and fill form fields data
Extract images and texts from PDF
Add, edit, update outlines and bookmarks, program annotations with sticky notes
Add foreground or background overlays from HTML or PDF assets
Stamp new HTML Content onto any existing PDF page
Add logical or HTML headers and footers

Manipulate Existing PDF Documents

Load and parse existing PDF documents
Merge and split content in pdf document
Add headers, footers, annotations, bookmarks, watermarks, text, and image assets
Add stamp and watermarks with text, images, and HTML backgrounds
Rotate pages

Convert from Multiple Formats

Images to a PDF file – convert from mainstream image document, with a single line code, JPG, PNG, GIF, BMP, TIFF, system drawing, and SVG to PDF
ASPX WebForms – convert, with 3 lines of code, ASP.NET webforms to downloadable PDFs viewable in the browser
HTML Document – convert HTML to PDF
Custom ‘base URL’ to allow accessible asset files across the web
Responsive layouts through Virtual Viewport (Width and Height)
Custom zoom with scalable:
- HTML content to dimensions that preserves the quality
- Output resolution in DPI
Embed System Drawing image assets into HTML strings with ImagetoDataURI
Enable JavaScript support including optional Render delays
Accept HTML encoded in any major file encoding (Default to UTF-8)

Export

MVC Views – export ASP.NET MVC views as PDF
Merge pages and images
Export files to any format with supported fonts

Save

Save and load from file, binary data, or MemoryStreams.

Secure

Improve security with options to update user passwords, metadata, security permissions, and verifiable digital signatures

Print

Screen or Print CSS media types
Turn PDF files into a PrintDocument object and print without Adobe (with minimal code)

See the Features

Everything you need in PDF documents

Creating, merging, splitting, editing, and manipulating PDF files whenever you want them, the way you want them is a breeze. Use your C# development skills to tap into IronPDF’s expanding features list.

To begin working on a project with IronPDF, download the free NuGet Package Installer or directly download the DLL. You can then proceed to create PDF document, edit and manipulate existing file formats, or export to any format without adobe acrobat.

Our support extends from a free and exhaustive range of tutorials to 24/7 live support.

Get Started with IronPDF

HTML, JavaScript, CSS and Image Conversion to PDF in .NET Applications.

Design with Familiar HTML Documents

IronPDF lets you work with mainstream HTML document formats and turn it into PDF in ASP.NET web applications. Apply multiple settings including setting file behavior and names, adding headers and footers, changing print options, adding page breaks, combining async and multithreading, and more.

Similarly you can convert C# MVC HTML to PDF for ASP .NET Applications, print MVC view to return PDF file format, supported with HTML, CSS, JavaScript and images.

In addition, create PDF documents and convert a present HTML page to PDF in ASP .NET C# applications and websites (C# html-to-pdf converter). The rich HTML is used as the PDF content with the ability to edit and manipulate with IronPDF's generate feature.

With IronPDF, worrying about resolutions is an issue from the past. The output PDF documents from IronPdf are pixel identical to the PDF functionality in the Google Chrome web browser.

Get Started in Minutes

Try It With NuGet Now

The benefits are clear! With IronPDF, you can do so much more, so much easier. Our product is perfect for anyone who needs to make, manage and edit a library of PDFs, including businesses in real estate, publishing, finance, and enterprise. The prices of our solution are also very competitive.

Ready to see what IronPDF can do for your projects and business? Try it out now

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