Angular.JS to PDF
Utilize the fromUrl
method to render a PDF document from a URL with IronPDF. Rendering occurs in an instance, which can sometimes lead to issues with loading JavaScript or fonts. To ensure that JavaScript and fonts load correctly, it is advisable to use the waitFor
class and specify an appropriate wait type, as well as a maximum wait time.
The consequences of improperly loaded JavaScript or fonts may include:
- Invisible text content
- Incorrectly displayed content
Here is an example code snippet demonstrating how to render a PDF using IronPDF with proper waiting mechanisms:
using IronPdf;
using System;
class Program
{
static void Main()
{
// Define the URL of the web page to convert to PDF
string url = "http://example.com";
// Initialize an instance of the HtmlToPdf renderer
var Renderer = new HtmlToPdf();
// Use the fromUrl method to create a PDF from the specified URL
// This method renders the webpage to a PDF asynchronously
var pdfDocument = Renderer.RenderUrlAsPdf(url);
// Specify a waiting mechanism to ensure JavaScript and fonts are fully loaded
// Wait up to 10 seconds; this can be adjusted based on the complexity of the webpage
pdfDocument.WaitForNetworkIdle(TimeSpan.FromSeconds(10));
// Save the rendered PDF to a file on disk
pdfDocument.SaveAs("output.pdf");
Console.WriteLine("PDF has been rendered and saved successfully.");
}
}
using IronPdf;
using System;
class Program
{
static void Main()
{
// Define the URL of the web page to convert to PDF
string url = "http://example.com";
// Initialize an instance of the HtmlToPdf renderer
var Renderer = new HtmlToPdf();
// Use the fromUrl method to create a PDF from the specified URL
// This method renders the webpage to a PDF asynchronously
var pdfDocument = Renderer.RenderUrlAsPdf(url);
// Specify a waiting mechanism to ensure JavaScript and fonts are fully loaded
// Wait up to 10 seconds; this can be adjusted based on the complexity of the webpage
pdfDocument.WaitForNetworkIdle(TimeSpan.FromSeconds(10));
// Save the rendered PDF to a file on disk
pdfDocument.SaveAs("output.pdf");
Console.WriteLine("PDF has been rendered and saved successfully.");
}
}
Imports IronPdf
Imports System
Friend Class Program
Shared Sub Main()
' Define the URL of the web page to convert to PDF
Dim url As String = "http://example.com"
' Initialize an instance of the HtmlToPdf renderer
Dim Renderer = New HtmlToPdf()
' Use the fromUrl method to create a PDF from the specified URL
' This method renders the webpage to a PDF asynchronously
Dim pdfDocument = Renderer.RenderUrlAsPdf(url)
' Specify a waiting mechanism to ensure JavaScript and fonts are fully loaded
' Wait up to 10 seconds; this can be adjusted based on the complexity of the webpage
pdfDocument.WaitForNetworkIdle(TimeSpan.FromSeconds(10))
' Save the rendered PDF to a file on disk
pdfDocument.SaveAs("output.pdf")
Console.WriteLine("PDF has been rendered and saved successfully.")
End Sub
End Class
Explanation of the Code
Import IronPdf Namespace: The code starts by importing the IronPdf and System namespaces. IronPdf is necessary for PDF rendering, and System provides basic functionalities such as using the
TimeSpan
class.Main Method: The
Main
method is the entry point of the program.URL Specification: The variable
url
holds the URL of the web page that you wish to convert to a PDF document.Initialize Renderer: An instance of the
HtmlToPdf
renderer is created usingnew HtmlToPdf()
. This instance is used to perform the conversion.Render URL to PDF: The
RenderUrlAsPdf
method is called on theRenderer
instance to convert the URL's HTML content into a PDF document.Ensure Full Page Load: To handle asynchronous loading of resources like JavaScript and fonts,
WaitForNetworkIdle
is used. This method waits until network activity subsides, with a maximum wait time of 10 seconds specified usingTimeSpan.FromSeconds(10)
. This is crucial for pages that heavily rely on dynamic content or fonts.Save PDF: The resulting PDF is then saved to a file named "output.pdf" using the
SaveAs
method.- Status Message: Finally, upon successful saving of the PDF, a confirmation message is printed to the console.
This approach ensures that the rendered PDF is complete and accurate, with all JavaScript and fonts properly loaded.