IronPDF。:

IronPDF supports a wide range of platforms, ensuring that you can work in your preferred environment.

使用 NuGet 安装

PM >  Install-Package IronPdf

在 IronPDF 上查看 NuGet 快速安装。超过 1000 万次下载，它正以 C# 改变 PDF 开发。 您也可以下载 DLL 或 Windows 安装程序。

Here's a breakdown of its compatibility:

• .NET 版本：

  • C#, VB.NET, F#
  • .NET Core (8, 7, 6, 5, 和 3.1+)
  • .NET Standard (2.0+)
  • .NET Framework (4.6.2+)

• 应用环境： IronPDF 在包括Windows、Linux、Mac、Docker、Azure 和 AWS 的应用环境中工作。

• IDEs: 兼容如Microsoft Visual Studio和JetBrains Rider & ReSharper的IDE。

• 操作系统和处理器：支持多个不同的操作系统和处理器，包括Windows、Mac、Linux、x64、x86、ARM。

For more information, visit the detailed IronPDF Compatibility Guide.

PdfPig:

IronPDF。特性

• HTML to PDF conversion: IronPDF can handle HTML to PDF conversion. 凭借对现代Web标准的全面支持，您可以放心地IronPDF将始终如一地从HTML内容返回像素完美的PDF文档。

• PDF file conversion: Need to convert file formats other than HTML to PDF? IronPDF supports the conversion of many different file formats including DOCX to PDF, RTF to PDF, Image to PDF, URL to PDF, and even PDF to HTML, all while maintaining the desired document structure.

• 安全功能： 通过 IronPDF，您始终可以确保任何敏感的PDF文件安全，因为它的安全功能。 使用IronPDF加密您的PDF文件，设置密码，并为PDF文件设置权限。

• PDF editing features: With IronPDF, you can edit PDF files with ease. IronPDF offers editing features such as adding headers and footers, stamping text and images onto the PDF pages, adding custom watermarks to the PDF, working with PDF forms, and merging PDF files.

For detailed feature information about the features offered by IronPDF, visit the IronPDF Features Page.

PdfPig Features

HTML to PDF Conversion

HTML to PDF Conversion Example is a simple task, yet it can be helpful depending on your needs. Whether you want to create a PDF document documenting a website from your portfolio or need to create PDFs from HTML content for your work environment, you'll need a strong HTML to PDF converter so you can consistently produce high-quality PDFs.

IronPDF Code Example:

using IronPdf;

// Enable web security to disable local disk access or cross-origin requests
Installation.EnableWebSecurity = true;

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

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

// Advanced Example with HTML Assets
// Render HTML with external assets: images, CSS, and JavaScript.
var myAdvancedPdf = renderer.RenderHtmlAsPdf("<img src='icons/iron.png'>", @"C:\site\assets\");
myAdvancedPdf.SaveAs("html-with-assets.pdf");

using IronPdf;

// Enable web security to disable local disk access or cross-origin requests
Installation.EnableWebSecurity = true;

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

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

// Advanced Example with HTML Assets
// Render HTML with external assets: images, CSS, and JavaScript.
var myAdvancedPdf = renderer.RenderHtmlAsPdf("<img src='icons/iron.png'>", @"C:\site\assets\");
myAdvancedPdf.SaveAs("html-with-assets.pdf");

Imports IronPdf

' Enable web security to disable local disk access or cross-origin requests
Installation.EnableWebSecurity = True

' Instantiate Chrome PDF Renderer
Dim renderer = New ChromePdfRenderer()

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

' Advanced Example with HTML Assets
' Render HTML with external assets: images, CSS, and JavaScript.
Dim myAdvancedPdf = renderer.RenderHtmlAsPdf("<img src='icons/iron.png'>", "C:\site\assets\")
myAdvancedPdf.SaveAs("html-with-assets.pdf")

PdfPig Code Example:

PdfPig in itself does not support HTML to PDF conversion, requiring you to use a third-party library to handle the conversion. PdfPig is more geared towards handling PDF creation over PDF conversion. So if you're looking for a library with built-in conversion support, IronPDF would be the way to go.

When you want to convert HTML content or web pages to a PDF format, IronPDF offers a strong, concise tool for handling this task, whereas PdfPig has no such inbuilt tool and relies on outside libraries.

Encrypting PDF Files

When you are dealing with any sensitive or private PDF files, you will be looking for a PDF tool that can handle security tasks such as encrypting PDF files, editing document metadata, and adding a password. Let's now take a look at how these tools would approach this scenario.

IronPDF Code Example:

using IronPdf;
using System;

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

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

// Edit file security settings

// Make a PDF read-only and 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.Password = "my-password";
pdf.SaveAs("secured.pdf");

using IronPdf;
using System;

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

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

// Edit file security settings

// Make a PDF read-only and 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.Password = "my-password";
pdf.SaveAs("secured.pdf");

Imports IronPdf
Imports System

' Open an Encrypted File, or create a new PDF from HTML
Private pdf = PdfDocument.FromFile("encrypted.pdf", "password")

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

' Edit file security settings

' Make a PDF read-only and 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.Password = "my-password"
pdf.SaveAs("secured.pdf")

PdfPig Code Example:

PdfPig does not offer the same in-built support for PDF security that IronPDF does. Due to the more simplistic nature of this library, you would need an external PDF library that does offer these features to handle this task.

When dealing with sensitive PDF files, IronPDF offers comprehensive security features like encryption, metadata editing, and password protection, while PdfPig lacks built-in security support and requires an additional library for such tasks.

Redacting PDF Content

What if you want to redact certain words or sections of content from your PDF files? This is another common need when working with a PDF file, so let us see if these PDF libraries are up to the task.

IronPDF Code Example:

using IronPdf;

PdfDocument document = PdfDocument.FromFile("novel.pdf");

// Redact 'are' phrase from all pages
document.RedactTextOnAllPages("are");
document.SaveAs("redacted.pdf");

using IronPdf;

PdfDocument document = PdfDocument.FromFile("novel.pdf");

// Redact 'are' phrase from all pages
document.RedactTextOnAllPages("are");
document.SaveAs("redacted.pdf");

Imports IronPdf

Private document As PdfDocument = PdfDocument.FromFile("novel.pdf")

' Redact 'are' phrase from all pages
document.RedactTextOnAllPages("are")
document.SaveAs("redacted.pdf")

PdfPig Code Example:

PdfPig does not offer any support for redacting content from PDF files.

IronPDF offers a simple way of redacting content from your PDF files, requiring only a few lines of code. This means you can easily automate any redaction tasks, raising the efficiency of your workplace. PdfPig, on the other hand, offers no such support for this task.

Digitally Signing PDF documents

While this is less likely to be an essential part of your daily PDF manipulation needs, depending on your work environment, you may come across times when you might need to digitally sign your PDF files. So now we will look at how these two tools might handle that.

IronPDF Code Example:

using IronPdf;
using IronPdf.Signing;
using System.Security.Cryptography.X509Certificates;

ChromePdfRenderer renderer = new ChromePdfRenderer();
PdfDocument pdf = renderer.RenderHtmlAsPdf("<h1>foo</h1>");

// Create X509Certificate2 object with X509KeyStorageFlags set to Exportable
X509Certificate2 cert = new X509Certificate2("IronSoftware.pfx", "123456", X509KeyStorageFlags.Exportable);

// Create PdfSignature object
var sig = new PdfSignature(cert);

// Sign PDF document
pdf.Sign(sig);
pdf.SaveAs("signed.pdf");

using IronPdf;
using IronPdf.Signing;
using System.Security.Cryptography.X509Certificates;

ChromePdfRenderer renderer = new ChromePdfRenderer();
PdfDocument pdf = renderer.RenderHtmlAsPdf("<h1>foo</h1>");

// Create X509Certificate2 object with X509KeyStorageFlags set to Exportable
X509Certificate2 cert = new X509Certificate2("IronSoftware.pfx", "123456", X509KeyStorageFlags.Exportable);

// Create PdfSignature object
var sig = new PdfSignature(cert);

// Sign PDF document
pdf.Sign(sig);
pdf.SaveAs("signed.pdf");

Imports IronPdf
Imports IronPdf.Signing
Imports System.Security.Cryptography.X509Certificates

Private renderer As New ChromePdfRenderer()
Private pdf As PdfDocument = renderer.RenderHtmlAsPdf("<h1>foo</h1>")

' Create X509Certificate2 object with X509KeyStorageFlags set to Exportable
Private cert As New X509Certificate2("IronSoftware.pfx", "123456", X509KeyStorageFlags.Exportable)

' Create PdfSignature object
Private sig = New PdfSignature(cert)

' Sign PDF document
pdf.Sign(sig)
pdf.SaveAs("signed.pdf")

PdfPig Code Example:

PdfPig does not directly support digital signing. You will need to use other libraries or tools to do this.

If you're looking for a tool to make signing PDFs a breeze, IronPDF's straightforward method will help not only raise the efficiency with which you carry out this task but also give you full control over the process. PdfPig, however, does not offer any support for digitally signing PDF files.

Applying Custom Watermarks to Your PDFs

Are you working with sensitive documents or looking to protect your work and avoid others stealing it to claim as their own? Then applying custom watermarks to your PDF pages can be just what you need. Let's see how the libraries tackle this task.

IronPDF Code Example:

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(@"C:\Path\To\Watermarked.pdf");

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(@"C:\Path\To\Watermarked.pdf");

Imports IronPdf

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

Private 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("C:\Path\To\Watermarked.pdf")

PdfPig Code Example:

PdfPig does not directly support watermarking.

While PdfPig doesn't support adding watermarks to your PDFs, IronPDF does. Taking advantage of its inbuilt support for applying watermarks, you can have full control over the entire process, and if you are familiar with HTML and CSS then it will be even easier to pick up thanks to the fact that it uses HTML/CSS to apply the watermarks.

Stamping Images and Text to PDF documents

Stamping images and text onto your PDF files is much the same as applying watermarks in a sense, and could be used for similar reasons, but can these two libraries carry out this task?

IronPDF Code Example:

using IronPdf;
using IronPdf.Editing;

// Create the PDF from HTML content
ChromePdfRenderer renderer = new ChromePdfRenderer();
PdfDocument pdf = renderer.RenderHtmlAsPdf("<h1>Example HTML Document!</h1>");

// Create text stamper
TextStamper textStamper = new TextStamper()
{
    Text = "Text Stamper!",
    FontFamily = "Bungee Spice",
    UseGoogleFont = true,
    FontSize = 30,
    IsBold = true,
    IsItalic = true,
    VerticalAlignment = VerticalAlignment.Top,
};

// Stamp the text stamper
pdf.ApplyStamp(textStamper);
pdf.SaveAs("stampText.pdf");

using IronPdf;
using IronPdf.Editing;

// Create the PDF from HTML content
ChromePdfRenderer renderer = new ChromePdfRenderer();
PdfDocument pdf = renderer.RenderHtmlAsPdf("<h1>Example HTML Document!</h1>");

// Create text stamper
TextStamper textStamper = new TextStamper()
{
    Text = "Text Stamper!",
    FontFamily = "Bungee Spice",
    UseGoogleFont = true,
    FontSize = 30,
    IsBold = true,
    IsItalic = true,
    VerticalAlignment = VerticalAlignment.Top,
};

// Stamp the text stamper
pdf.ApplyStamp(textStamper);
pdf.SaveAs("stampText.pdf");

Imports IronPdf
Imports IronPdf.Editing

' Create the PDF from HTML content
Private renderer As New ChromePdfRenderer()
Private pdf As PdfDocument = renderer.RenderHtmlAsPdf("<h1>Example HTML Document!</h1>")

' Create text stamper
Private textStamper As New TextStamper() With {
	.Text = "Text Stamper!",
	.FontFamily = "Bungee Spice",
	.UseGoogleFont = True,
	.FontSize = 30,
	.IsBold = True,
	.IsItalic = True,
	.VerticalAlignment = VerticalAlignment.Top
}

' Stamp the text stamper
pdf.ApplyStamp(textStamper)
pdf.SaveAs("stampText.pdf")

using IronPdf;
using IronPdf.Editing;
using System;

// Create the PDF from HTML content
ChromePdfRenderer renderer = new ChromePdfRenderer();
PdfDocument pdf = renderer.RenderHtmlAsPdf("<h1>Example HTML Document!</h1>");

// Create image stamper
ImageStamper imageStamper = new ImageStamper(new Uri("https://ironpdf.com/img/svgs/iron-pdf-logo.svg"))
{
    VerticalAlignment = VerticalAlignment.Top,
};

// Stamp the image stamper
pdf.ApplyStamp(imageStamper, 0);
pdf.SaveAs("stampImage.pdf");

using IronPdf;
using IronPdf.Editing;
using System;

// Create the PDF from HTML content
ChromePdfRenderer renderer = new ChromePdfRenderer();
PdfDocument pdf = renderer.RenderHtmlAsPdf("<h1>Example HTML Document!</h1>");

// Create image stamper
ImageStamper imageStamper = new ImageStamper(new Uri("https://ironpdf.com/img/svgs/iron-pdf-logo.svg"))
{
    VerticalAlignment = VerticalAlignment.Top,
};

// Stamp the image stamper
pdf.ApplyStamp(imageStamper, 0);
pdf.SaveAs("stampImage.pdf");

Imports IronPdf
Imports IronPdf.Editing
Imports System

' Create the PDF from HTML content
Private renderer As New ChromePdfRenderer()
Private pdf As PdfDocument = renderer.RenderHtmlAsPdf("<h1>Example HTML Document!</h1>")

' Create image stamper
Private imageStamper As New ImageStamper(New Uri("https://ironpdf.com/img/svgs/iron-pdf-logo.svg")) With {.VerticalAlignment = VerticalAlignment.Top}

' Stamp the image stamper
pdf.ApplyStamp(imageStamper, 0)
pdf.SaveAs("stampImage.pdf")

PdfPig Code Example:

PdfPig, on its own, does not support stamping PDF image objects or text onto PDF files. If you wanted to stamp text and images onto your PDF document, you would have to use additional libraries.

If you are looking for a tool that can handle stamping text and images onto your PDFs then IronPDF would be the tool for you. With its powerful inbuilt stamping tool, you would have full control over the entire process and be able to stamp anything you need to stamp onto your files. If you want to add different fonts to the text stamper, IronPDF supports TrueType format fonts. PdfPig does not offer the same support, making it unable to carry out this task.

DOCX to PDF Conversion

IronPDF。 Pricing and Licensing

IronPDF offers diverse pricing options for licenses. Developers can also purchase Iron Suite, which gives access to all of Iron Software's products at the price of two. If you're not ready to buy a license, IronPDF provides a free trial that lasts 30 days.

• 永久许可证：根据您的团队规模、项目需求和地点数量提供一系列永久许可证。 每种许可证类型都配有电子邮件支持。
• Lite License: This license supports one developer, one location, and one project. (Price unlisted)
• Plus License: Supporting three developers, three locations, and three projects, this is the next step up from the lite license and costs $1,199. Plus许可证除了电子邮件支持外，还提供聊天支持和电话支持。
• Professional License: This license is suitable for larger teams, supporting ten developers, ten locations, and ten projects for $2,399. 该许可证提供与之前的层级相同的联系方式支持渠道，并额外支持屏幕共享。
• 免版税再分发： IronPDF 还提供免版税再分发保障，额外收费为 $2,399。
• Uninterrupted product support: IronPDF offers access to ongoing product updates, security feature upgrades, and support from their engineering team for either $1,199/year or a one-time purchase of $2,399 for a 5-year coverage.
• Iron Suite：费用$1,498，您可以访问包括IronPDF、IronOCR、IronWord、IronXL、IronBarcode、IronQR、IronZIP、IronPrint和IronWebScraper在内的所有Iron Software产品。

PdfPig Licensing

IronPDF。

• Comprehensive Documentation: Extensive and user-friendly documentation covering all features.
• 24/5支持：活跃的工程师支持。
• 视频教程：在YouTube上提供逐步视频指南。
• 社区论坛：活跃的社区提供额外支持。
• 定期更新：每月产品更新以确保最新的功能和安全漏洞修复。

For more information, check out IronPDF's extensive documentation and guides, and visit the Iron Software YouTube channel.

PdfPig