Convert HTML to PNG via C#

HTML to PNG C# conversion. Programmers can use this example code to export HTML to PNG within any .NET Framework, .NET Core, .NET 5-7

Convert HTML to PNG in .NET

How to convert HTML to PNG? You can easily convert programmatically a document from HTML to PNG format with a modern document-processing .NET API. Use just a few lines of С# code to convert files with high quality. The Aspose.PDF library will allow any developer to efficiently solve the tasks of converting HTML to PNG using .NET.

For a more detailed description of the code snippet and other possible conversion formats, see the Documentation pages. Also, you can check the other conversions of formats, which are supported by our library.

In order to convert HTML to PNG, we’ll use Aspose.PDF for .NET API which is a feature-rich, powerful, and easy-to-use conversion API for .NET platform. Check the details of Installing the Library on the Documentation pages. To verify the benefits of the library, try using the conversion HTML to PNG code snippet. You may also use the following command from the Package Manager Console:

Package Manager Console

PM > Install-Package Aspose.PDF

How to Convert HTML to PNG


.NET developers can easily load & convert HTML files to PNG in just a few lines of code.

  1. Load HTML file with an instance of Document class
  2. Create & set the instance of PngDevice class with Size & Resolution
  3. Call PngDevice.Process method with page index & output file path as parameters
  4. Save the output PNG file

System Requirements


Aspose.PDF for .NET is supported on all major operating systems. Just make sure that you have the following prerequisites.

  • Microsoft® Windows™ or a compatible OS with .NET Framework, .NET Core, and PHP, VBScript, C++ via COM Interop.
  • Development environment like Microsoft Visual Studio.
  • Aspose.PDF for .NET DLL referenced in your project.

Here is an example that demonstrates how to convert HTML to PNG in C#. You can follow these easy steps to convert your HTML file to PNG format. First, upload your HTML file and then simply save it as a PNG file. You can use fully qualified filenames for both HTML reading and PNG writing. The output PNG content and formatting will be identical to the original HTML document.

Example: Convert HTML to PNG via C#

This sample code shows HTML to PNG C# Conversion

Input file:

File not added

Output format:

PNG

Output file:

        public static void ConvertHTMLtoPNG()
        {
            // load HTML with an instance of Document                        
            var document = new Document("template.html", new HtmlLoadOptions());

            // create an object of EmfDevice
            var renderer = new Aspose.Pdf.Devices.PngDevice();

            // convert a particular page and save the image in EMF format
            renderer.Process(document.Pages[1], "output.png");
        }

Convert HTML to PNG using .NET library

Aspose.PDF for C# API provides a wide range of features for working with PDF files. Some of the features include:

  • Create PDF documents from scratch or from HTML, XML, or images.
  • Edit existing PDF documents by adding or removing pages, text, images, and other content.
  • Convert PDF documents to other formats such as HTML, XML, and images.
  • Render PDF documents to images or XPS format.
  • Print PDF documents directly from your application.
  • Digitally sign PDF documents.

You can find more information on Aspose.PDF for C# API in this Aspose documentation