Convert HTML to XLSX in C# .NET or via Online HTML Converter

Convert HTML to XLSX in C#

Follow these simple steps for HTML to XLSX conversion in .NET. View the converted XLSX document as it is or render and display it as HTML, PDF or an image file without using any external software.

Get the respective assembly files from downloads or fetch the whole package from NuGet to add Conholdate.Total directly in your workspace.

Create Converter object to convert HTML document
Set the convert options for XLSX format
Call Convert method of Converter class instance for conversion to XLSX
Set options for PDF (PdfViewOptions), JPG (JpgViewOptions), PNG (PngViewOptions) or HTML (HtmlViewOptions) viewer
Create Viewer object to view converted XLSX as HTML, PDF or image

Free App for HTML to XLSX Conversion

	// Supports converting documents between Word, Excel, PowerPoint, Project, Images, Web, Email, Metafiles and Diagram file formats.
	// Supported file formats: https://docs.groupdocs.com/conversion/net/supported-document-formats/
	using (Converter converter = new Converter("input.html"))
	{
	var convertOptions = converter.GetPossibleConversions()["docx"].ConvertOptions;

	converter.Convert("output.docx", convertOptions);
	}

	HtmlViewOptions viewOptions = HtmlViewOptions.ForEmbeddedResources("output{0}.html");

	using (Viewer viewer = new Viewer("output.docx"))
	{
	viewer.View(viewOptions);
	}

view raw html-to-word-docx-conversion.cs hosted with ❤ by GitHub

Convert HTML to PDF in C# .NET

Accurately convert your web document (HTML) to PDF within any type of .NET (C#, ASP.NET, VB.NET and .NET Core) applications in three simple lines of .NET code.

Converting to HTML files is also supported using advanced options such as fixed layout to accurately position HTML elements and managing the zoom level of the converted XLSX document in percentage.

Load the source HTML file
Set the convert options for PDF format
Convert HTML to PDF format

HTML Data Extraction API

Enhance your .NET applications with our powerful HTML document information extraction feature. Not only can developers retrieve basic information about HTML files, but they can also access valuable data specific to file formats. Imagine being able to retrieve project start and end dates from Microsoft Project files, identify printing restrictions in PDF documents, and gather a comprehensive list of folders within Outlook data files. With our advanced document analysis capabilities, your application will have the ability to extract meaningful insights through efficient information retrieval. Empower your development with fluency and engage your users with deeper insights.

Convert HTML and other commonly used document formats with ease, regardless of the operating system you’re using - whether it’s Windows, Linux, or macOS. Streamline your HTML document conversion process by utilizing platforms like Windows Azure, Mono, and Xamarin, which are designed for smooth cross-platform integration.

	// Supports converting documents between Word, Excel, PowerPoint, Project, Images, Web, Email, Metafiles and Diagram file formats.
	// Supported file formats: https://docs.groupdocs.com/conversion/net/supported-document-formats/

	using (Converter converter = new Converter("input.html"))
	{
	PdfConvertOptions options = new PdfConvertOptions();

	converter.Convert("converted.pdf", options);
	}

view raw html-to-pdf-conversion.cs hosted with ❤ by GitHub

Frequently Asked Questions (FAQs)

Can I convert HTML files to XLSX online without paying anything?

Yes. You can easily convert HTML files to XLSX online using our completely free converter. It requires no software installation or user registration—just upload your file, convert and download your XLSX.

How do I convert HTML files to XLSX using C# code?

Converting HTML files to XLSX using C# is straightforward with the Conholdate.Total for .NET APIs. We provide practical, ready-to-use code samples and clear documentation to simplify the integration into your applications.

Do I need to have Microsoft HTML installed to perform HTML-to-XLSX conversions with C#?

No. you don’t need Microsoft HTML installed. Conholdate.Total APIs operate independently, allowing you to convert HTML documents directly to XLSX format within your .NET applications without HTML itself.

How quickly does your online HTML-to-XLSX converter work?

Our online converter is built for speed and efficiency. Most conversions take just a few seconds—even when dealing with larger or more complex HTML files.

Will the online converter preserve formulas and hyperlinks from my HTML files?

Our online HTML-to-XLSX converter keeps all your hyperlinks, images, charts and formatting intact. However, HTML formulas are converted into their resulting values in the final XLSX, ensuring an accurate and readable document.

Can I automate the HTML-to-XLSX conversion on my own servers?

Definitely! You can automate the HTML-to-XLSX conversion process using Conholdate.Total for .NET. It’s perfect for handling batch jobs, scheduled conversions, or integrating seamlessly into your backend workflows.

Is it safe to upload my HTML files for online XLSX conversion?

Your security and privacy are extremely important to us. Uploaded files are securely processed and automatically deleted from our servers shortly afterward, ensuring your data remains confidential.

Can I convert several HTML sheets into a single XLSX using C#?

Yes. you can. Conholdate.Total allows you to select and combine multiple sheets from your HTML workbook into a single XLSX document effortlessly.

Does Conholdate.Total for .NET support batch HTML files conversion to other formats?

Yes. Conholdate.Total for .NET supports batch conversion of HTML documents, allowing developers to convert multiple files at once.

Does the HTML to XLSX API work with .NET Core, .NET 5 and newer versions?

Absolutely. Our HTML-to-XLSX conversion API supports all modern .NET frameworks, including .NET Core, .NET 5, .NET 6, and even .NET 7. This gives you flexibility regardless of your project environment.

Can I add watermarks or passwords to XLSXs created from HTML files?

Yes. Conholdate.Total provides convenient features to enhance your XLSX documents. You can add watermarks for branding or confidentiality, apply password protection, and even customize other XLSX security settings easily during the conversion process.

What file formats for documents and images are supported by Conholdate.Total for .NET?

Conholdate.Total for .NET integrates APIs from Aspose and GroupDocs to enable .NET programmers to perform various document manipulation actions on a wide range of file formats including Word, Excel, PDF, PowerPoint, Visio, HTML and images in .NET, C#, ASP.NET and VB.NET applications.

Can I convert password-protected HTML files to XLSX in .NET?

Yes. Conholdate.Total for .NET supports the conversion of password-protected HTML files. With built-in methods to handle encrypted documents, you can securely convert sensitive files to XLSX while preserving their confidentiality and integrity.

What are the licensing costs for Conholdate.Total’s HTML to XLSX conversion API?

Conholdate.Total for .NET offers a fully functional free trial version for 30 days. Paid plans are available for higher usage levels. Developers should carefully review the pricing and licensing terms before using the document conversion API.

What is HTML file format?

HTML (Hypertext Markup Language) is the fundamental markup language that powers the creation of web pages. It serves as the building block for websites and is responsible for structuring the content, including text, images, audio, and video. HTML, in conjunction with CSS (Cascading Style Sheets), forms the backbone of digital documents on the internet.

In web development, HTML files work hand in hand with CSS files to create visually appealing and well-organized web pages. HTML files contain the markup that defines the structure of the document, while CSS files handle the styling and formatting of the HTML elements. HTML markup is written using tags, which instruct the web browser on how to interpret and display the content. Common HTML tags include HEAD, BODY, TITLE, H1, and P. HTML files are typically saved with a .html file extension and can be opened in web browsers, where they are rendered as web pages. They can also be viewed and edited using text editors like Notepad++ or Sublime Text.

The collaboration between HTML and CSS is essential for creating appealing and functional web pages. HTML provides the underlying structure, defining the layout, headings, paragraphs, links, and other elements that make up a webpage. CSS, on the other hand, allows developers to apply styling rules and visual enhancements, such as colors, fonts, margins, and positioning, to the HTML elements. This separation of structure (HTML) and presentation (CSS) enables efficient design changes and consistent styling across multiple web pages.

HTML is the cornerstone of the web, enabling the creation of interactive and accessible content that can be viewed in web browsers. It forms the foundation for other web technologies, such as JavaScript, which adds interactivity and dynamic behavior to web pages. HTML’s standardized syntax and wide browser support make it a universal language for web development.

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What is XLSX file format?

The XLSX file format is a widely used file format for storing spreadsheet data. It was introduced by Microsoft as part of their Microsoft Office suite, specifically for the Excel application. XLSX stands for Excel Open XML Spreadsheet. Unlike its predecessor, the XLS format, which was based on a proprietary binary file structure, XLSX is based on the Open XML file format.

XLSX files are structured as a collection of XML files compressed into a single ZIP archive. This XML-based structure allows for more efficient storage and faster data processing. XLSX files store data in a tabular format, with rows and columns that can contain text, numbers, formulas, and other types of data. They also support formatting options such as cell styles, fonts, colors, and conditional formatting.

One of the advantages of the XLSX format is its compatibility across different platforms and software applications. Many spreadsheet programs, including Microsoft Excel, Google Sheets, and LibreOffice Calc, can open and edit XLSX files. This makes it easy to share and collaborate on spreadsheet data with others, regardless of the software they are using.

XLSX files also offer features like data validation, filtering, sorting, and the ability to create charts and graphs based on the data. Additionally, XLSX files can contain multiple sheets within a single file, allowing users to organize and manage different sets of data within a single document.

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