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Cómo convertir y descargar un PDF desde una URL en C#

Cómo Descargar PDF Desde URL en C# (Tutorial Paso a Paso)

Are you wondering how to create a PDF file using a URL or download a PDF file using the C# .NET programming language? This article will discuss how you can do just this using a market-leading .NET library called IronPDF - HTML to PDF Library for .NET. IronPDF lets you download PDF files and convert any HTML page to a PDF file.

IronPDF

IronPDF is a powerful HTML-to-PDF conversion API. IronPDF offers a comprehensive set of tools for converting HTML sites in the .NET and .NET Core Frameworks. IronPDF allows developers to create, alter, and retrieve PDFs in .NET projects. Using IronPDF, developers can easily produce and manipulate high-fidelity PDFs from HTML pages.

Creating PDF files using IronPDF is easy and efficient, thereby reducing the workload on developers.

To get started with IronPDF, all you need is Visual Studio and C# installed on your system. Follow the steps in this comprehensive IronPDF installation guide to install IronPDF and get started with working with PDFs.

1. Creating a New Project in Visual Studio

Open the Visual Studio IDE.

Go to the File menu in Visual Studio after starting it up. Select "New Project" then Console Application.

In the relevant text box, type the project name and choose the path. Then, click the Create button. Select the required .NET Framework, as in the screenshot below:

How to Download PDF From URL in C# (Step-By-Step) Tutorial, Figure 1: Configure the new project Configure the new project

When a new window appears, select the target framework and click on Create.

How to Download PDF From URL in C# (Step-By-Step) Tutorial, Figure 2: Select a .NET Framework Select a .NET Framework

The main Program.cs file will now open.

How to Download PDF From URL in C# (Step-By-Step) Tutorial, Figure 3: A default C# file is created for the new project A default C# file is created for the new project

2. Install the IronPDF C# Library

The IronPDF library can be downloaded and installed in many ways. This tutorial targets three simplest approaches:

  • Using the Visual Studio NuGet Package Manager
  • Using the Visual Studio Command-Line
  • Direct download from the NuGet webpage

2.1. Using the Visual Studio NuGet Package Manager

The NuGet Package Manager option is available in Visual Studio to install the package directly into the solution. The below screenshot shows how to open it.

How to Download PDF From URL in C# (Step-By-Step) Tutorial, Figure 4: Navigate to NuGet Package Manager Navigate to NuGet Package Manager

This opens a search box that displays a list of the package libraries available on NuGet. As shown in the screenshot below, search for the keyword "IronPDF" in the package manager search field.

How to Download PDF From URL in C# (Step-By-Step) Tutorial, Figure 5: Search for IronPDF in NuGet Package Manager UI Search for IronPDF in NuGet Package Manager UI

Select the IronPDF package (first option as shown above) and click Install to add the package to this solution.

How to Download PDF From URL in C# (Step-By-Step) Tutorial, Figure 6: Install IronPDF in NuGet Package Manager UI Install IronPDF in NuGet Package Manager UI

2.2. Using the Visual Studio Command-Line

In the Visual Studio menu, go to Tools, move the cursor to NuGet Package Manager and click on Package Manager Console.

How to Download PDF From URL in C# (Step-By-Step) Tutorial, Figure 7: Navigate to Package Manager Console Navigate to Package Manager Console

Package Manager Console will appear at the bottom of the screen. Just write the following command and press enter, and IronPDF will install.

Install-Package IronPdf

How to Download PDF From URL in C# (Step-By-Step) Tutorial, Figure 8: Install IronPDF in Package Manager Console Install IronPDF in Package Manager Console

2.3 Direct download from the NuGet webpage

The third way is to download the NuGet package directly from the website.

  • Navigate to the link https://www.nuget.org/packages/IronPdf/
  • Select the download package option from the menu on the right-hand side.
  • Double-click the downloaded package; it will be installed automatically.
  • Now reload the solution and begin using it in the project.

3. Download a PDF from a URL using IronPDF

You can easily download a PDF document from a URL with just a few lines of code using IronPDF. URL to PDF conversion has a lot of applications, such as saving or sending UI designs and record-keeping to name a few. Using IronPDF's URL to PDF file conversion takes just a few seconds, as it uses the world's number one rendering engine to render HTML.

This tutorial will demonstrate IronPDF's precision and efficiency with two different websites that vary in size and complexity.

3.1. Downloading a PDF from the URL of an eCommerce Website

IronPDF can render text, images, and descriptions of any eCommerce website from a URL with just a few lines of code.

To perform this conversion, copy the URL of your favorite eCommerce website and execute the project with code similar to what's given below.

using IronPdf;

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

// Create a PDF from a URL or local file path
var pdf = renderer.RenderUrlAsPdf("https://www.daraz.pk/#hp-flash-sale");

// Export to a file or Stream
pdf.SaveAs("ecommerce_site.pdf");
using IronPdf;

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

// Create a PDF from a URL or local file path
var pdf = renderer.RenderUrlAsPdf("https://www.daraz.pk/#hp-flash-sale");

// Export to a file or Stream
pdf.SaveAs("ecommerce_site.pdf");
Imports IronPdf

' Instantiate renderer
Private renderer = New IronPdf.ChromePdfRenderer()

' Create a PDF from a URL or local file path
Private pdf = renderer.RenderUrlAsPdf("https://www.daraz.pk/#hp-flash-sale")

' Export to a file or Stream
pdf.SaveAs("ecommerce_site.pdf")
$vbLabelText   $csharpLabel

The output for the given sample is below. Compare this image with how it appears in a web browser:

How to Download PDF From URL in C# (Step-By-Step) Tutorial, Figure 9: The output PDF file from a URL The output PDF file from a URL

3.2. Downloading a PDF from the URL of a Blog Website

Blog websites have a lot of small details that are important for their UI. Ideally, these details should be preserved when converting blog pages to PDFs.

The next example will present the results of converting a Wikipedia article to PDF.

How to Download PDF From URL in C# (Step-By-Step) Tutorial, Figure 10: A Wikipedia article in the web browser A Wikipedia article in the web browser

using IronPdf;

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

// Create a PDF from a URL or local file path
var pdf = renderer.RenderUrlAsPdf("https://en.wikipedia.org/wiki/URL");

// Export to a file or Stream
pdf.SaveAs("wikipedia_article.pdf");
using IronPdf;

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

// Create a PDF from a URL or local file path
var pdf = renderer.RenderUrlAsPdf("https://en.wikipedia.org/wiki/URL");

// Export to a file or Stream
pdf.SaveAs("wikipedia_article.pdf");
Imports IronPdf

' Instantiate renderer
Private renderer = New IronPdf.ChromePdfRenderer()

' Create a PDF from a URL or local file path
Private pdf = renderer.RenderUrlAsPdf("https://en.wikipedia.org/wiki/URL")

' Export to a file or Stream
pdf.SaveAs("wikipedia_article.pdf")
$vbLabelText   $csharpLabel

How to Download PDF From URL in C# (Step-By-Step) Tutorial, Figure 11: The output PDF file from the Wikipedia article The output PDF file from the Wikipedia article

When creating the PDF of blog pages, internal links should not be broken. PDFs created using IronPDF maintain all links correctly.

4. Conclusion

This tutorial discussed how to create PDFs from URLs using IronPDF. IronPDF makes it very simple to convert HTML from existing URLs to PDF documents. JavaScript, images, forms, and links are all extremely well-supported; the output is almost identical to the original and keeps all formatting and links.

For more examples of using IronPDF, please read this IronPDF URL to PDF Code Example. To learn more about the features of IronPDF offers, please visit the IronPDF Features Overview page.

Additionally, some notable features that IronPDF offers:

More information about IronPDF licensing for Free and Commercial projects is available on the IronPDF Licensing Information page. Purchase Iron Software's entire suite of five libraries for a deeply discounted price: five libraries for the cost of two libraries.

Preguntas Frecuentes

¿Cómo puedo convertir una URL a PDF en C#?

Puedes usar la clase ChromePdfRenderer de IronPDF y su método RenderUrlAsPdf para convertir una URL en un PDF en C#. Esto asegura que el formato y los enlaces se conserven.

¿Cuáles son las opciones de instalación para integrar una biblioteca PDF en un proyecto .NET?

IronPDF se puede instalar fácilmente en un proyecto .NET a través del Administrador de Paquetes NuGet en Visual Studio, mediante la línea de comandos de Visual Studio, o descargándolo directamente desde el sitio web de NuGet.

¿Cómo maneja IronPDF JavaScript al convertir HTML a PDF?

IronPDF soporta JavaScript, asegurando que los elementos interactivos se incluyan en la conversión a PDF, logrando que el resultado sea similar a la página HTML original.

¿Puedo convertir sitios web de eCommerce a PDF usando una biblioteca C#?

Sí, IronPDF te permite convertir páginas web de eCommerce a PDF, preservando texto, imágenes y detalles de productos, al renderizar la URL de la página web directamente a un PDF.

¿IronPDF soporta características avanzadas de PDF?

IronPDF ofrece características avanzadas, como cifrado y descifrado de PDF, combinación, división y edición de formularios PDF, convirtiéndose en una herramienta integral para la gestión de PDFs.

¿Existe una guía para comenzar con la conversión de PDF en C#?

Sí, el sitio web de IronPDF ofrece una guía detallada de instalación y uso para ayudarte a comenzar a convertir páginas web a PDFs en C# de manera efectiva.

¿Cómo asegura IronPDF la precisión de los enlaces internos en un PDF?

IronPDF mantiene la integridad de los enlaces internos durante la conversión, por lo que todos los enlaces funcionan correctamente en el PDF resultante.

¿Dónde puedo encontrar ejemplos de conversión de URL a PDF usando C#?

Puedes encontrar varios ejemplos de cómo usar IronPDF para la conversión de URL a PDF en C# en el sitio web de IronPDF, que incluye ejemplos de código específicos y tutoriales.

¿Puedo usar este método de descarga de URL a PDF en una aplicación C# .NET 10?

Absolutamente. IronPDF es compatible con .NET 10, por lo que los ejemplos de ChromePdfRenderer.RenderUrlAsPdf en este artículo funcionan en aplicaciones de consola .NET 10, API web y servicios en segundo plano. Cree un proyecto .NET 10, añada el paquete IronPdf desde NuGet, y podrá descargar y guardar PDFs desde URLs con las mismas pocas líneas de C# mostradas aquí.

¿Hay alguna consideración a tener en cuenta para ejecutar IronPDF en .NET 10 en comparación con versiones anteriores?

En .NET 10, IronPDF mantiene su compatibilidad con las API de .NET Framework y .NET/.NET Core, y se ejecuta sin problemas en contextos de consola, API web y servicios en segundo plano. Asegúrese de instalar el paquete NuGet de IronPDF más reciente compatible con .NET 10, ya que el motor de renderizado, ChromePdfRenderer, mantiene la paridad de funciones, incluyendo la gestión de JavaScript, la carga de recursos (CSS, imágenes) y la conservación de enlaces, como se describe en el tutorial (ironpdf.com/blog/using-ironpdf/csharp-download-pdf-from-url-tutorial/).

Curtis Chau
Escritor Técnico

Curtis Chau tiene una licenciatura en Ciencias de la Computación (Carleton University) y se especializa en el desarrollo front-end con experiencia en Node.js, TypeScript, JavaScript y React. Apasionado por crear interfaces de usuario intuitivas y estéticamente agradables, disfruta trabajando con frameworks modernos y creando manuales bien ...

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