How to Merge HTML Files?

Aspose.HTML for .NET offers you tools to merge HTML files online or programmatically via C#. Online HTML Merger lets you merge multiple HTML files into a single document in real-time right in your browser. If you want to use merging and conversion functionalities in your product or to merge HTML programmatically, please download Aspose.HTML C# library, learn our documentation and consider the C# code examples. Powerful C# API allows you to merge HTML files quickly and in high quality.

Online HTML Merger

Test the quality of HTML merging right in your browser! Please load HTML files from the local file system or a URL, select the required output format and run the example! It’s fast, easy, secure, and completely free! You will immediately get the result as a separate file. So, quickly merge HTML files and save the result to PDF, XPS, DOCX, TIFF or MHTML format online!

Steps to Merge HTML to PDF in C#

Aspose.HTML for .NET API provides the Renderer class for rendering and merging HTML documents. Using the Renderer instances directly, you can send multiple files to the output rendering device at once. Aspose.HTML API provides the following implementation of renderers: HtmlRenderer, SvgRenderer, MhtmlRenderer and EpubRenderer, which are used to render HTML, SVG, MHTML and EPUB documents, respectively.
Please see the example above if you would like to merge HTML programmatically. You can merge HTML files with a few lines of C# code:

  1. Load HTML documents using one of the HTMLDocument() constructors. You can load HTML from a file, HTML code, stream, or URL.
  2. Create an instance of HTML Renderer. Use the HtmlRenderer() constructor.
  3. In this step, you can choose a rendering device. API provides the following implementations: PdfDevice, XpsDevice, DocDevice and ImageDevice, which are used to generate PDF, XPS, DOCX and Image file formats, respectively.
  4. If you want to merge HTML to PDF, create a PDF device. Use the PdfDevice() constructor to initialise a new instance of the PdfDevice class.
  5. Call the Render() method to merge all HTML documents into PDF.
  6. Copy C# code for HTML files merging and use it in your project.


1. Why is this HTML Merger useful?

HTML Merger is a practical, powerful and fast tool to combine several HTML files. You can quickly and easily merge HTML documents into one and save the result in PDF, XPS, DOCX, and TIFF formats without any hassle!

2. How can I merge HTML?

You can merge HTML online or programmatically. To merge HTML online, please load files from your local file system or a URL, select the required output format from the list and run the example! You will immediately get the result. Moreover, you can copy C# code and use it on your own application for file merging.

3. Can I merge HTML on Linux, Mac OS, iOS or Android?

You can use this free online HTML Merger from a mobile device, tablet or computer. The interface of the Merger is very straightforward. Our tool is supported by all operating systems with a browser – Windows, Mac OS, Linux, Android, and iOS. There is no requirement to install any additional tool to support this tool running.

What is HTML File Format

HTML (HyperText Markup Language) is the standard markup language for documents created for display in browsers. The latest variant, known as HTML 5, gives a lot of flexibility for working with the language. HTML pages are either received from a server where these are hosted or can be loaded from a local system as well. Each HTML page is made up of HTML elements such as forms, text, images, animations, links, etc. These elements are represented by tags such as img, a, p and several others, where each tag has a start and end. It can also embed applications written in scripting languages such as JavaScript and Style Sheets (CSS) for overall layout representation.

How to Install Aspose.HTML for .NET library

You can use several ways to install the Aspose.HTML library for .NET on your system:

  1. Install a NuGet Package using the NuGet Package Manager GUI.
  2. Install a NuGet Package using the Package Manager Console. You may use the following command PM> Install-Package Aspose.Html.
  3. Install Aspose.HTML for .NET through MSI.

Aspose.HTML is an advanced HTML parsing library. One can create, edit, navigate through nodes, extract data, merge and convert HTML, XHTML, MD, EPUB, and MHTML files to PDF, DOCX, Images, and other popular formats. Moreover, it also handles CSS, HTML Canvas, SVG, XPath, and JavaScript out-of-the-box to extend manipulation tasks. It’s a standalone API and does not require any software installation. Use the Aspose.HTML C# library to convert, merge, edit HTML documents, extract data from the web, and more! For more details about C# library installation and system requirements, please refer to Aspose.HTML Documentation.