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Convert DOCX to PDF in C# .NET

Integrate robust document conversion features into your .NET applications with Conholdate.Total API. Convert DOCX to PDF and 100+ other file formats without Microsoft Office dependencies. Major features include fully functional C# code examples with options for customizable DOCX document, batch conversion, password protection & auto-detection of DOC, DOCX, DOTX & TXT file formats. It supports .NET Framework & .NET Core. Try our free online DOCX to PDF converter tool & streamline document processing in your .NET projects.

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Convert DOCX to PDF in C# .NET

Follow these simple steps for DOCX to PDF conversion in .NET. View the converted PDF document as it is or render and display it as HTML without using any external software or .NET Word library.

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

  • Create Converter object to convert DOCX document
  • Set the convert options for PDF format
  • Call Convert method of Converter class instance for conversion to PDF
  • Set options for HTML viewer
  • Create Viewer object to view converted PDF as HTML

Free App for DOCX to PDF Conversion



Convert DOCX to PDF & Add Watermark

Accurately convert documents (DOCX to PDF) exactly as the original file and apply text or image watermarks to PDF pages using .NET document processing API for Word documents.

  • Create Converter object to convert DOCX document
  • Create new instance of WatermarkOptions class
  • Specify watermark properties (color, width, text, image etc)
  • Instantiate the proper ConvertOptions class
  • Set Watermark property of the ConvertOptions instance
  • Call Convert method of Converter class instance for conversion to PDF

Load DOCX with Advanced Options

During the file conversion process, a wide range of modifications can be made to suit your specific needs. These include specifying passwords for password-protected documents, showing or hiding document comments and annotations, displaying markup and track changes for Word documents, and more.

Additionally, Excel files can have hidden spreadsheets made visible and text file encoding can be set. The Conholdate.Total for .NET API makes it easy to customize your document conversion process with these advanced options.


Convert Password Protected DOCX to PDF

Easily convert password-protected DOCX to PDF in .NET with Conholdate.Total APIs. No external software needed. Just a few lines of C# code for precise conversion.

  • Define LoadOptions and set password from document specific load options
  • Create Converter object to convert DOCX document
  • Instantiate PdfConvertOptions class
  • Call Convert method of Converter class instance for conversion to PDF

Load & Convert Cloud DOCX Docs

Using Conholdate.Total for .NET – developers can load and convert DOCX documents from various remote locations and cloud document storage resources such as Amazon S3, Microsoft Azure Blob, FTP, local disk, stream or a simple URL. You just have to specify the method to obtain remotely located document stream and then pass it on to the Converter class as a constructor.

Conholdate.Total for .NET APIs are native to Windows Forms, ASP.NET, WPF, WCF or any type of application based on .NET Framework 2.0, .NET Core 2.1 or .NET 5 and higher.


Frequently Asked Questions (FAQs)

Can I convert DOCX files to PDF online without paying anything?

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

How do I convert DOCX files to PDF using C# code?

Converting DOCX files to PDF 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 DOCX installed to perform DOCX-to-PDF conversions with C#?

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

How quickly does your online DOCX-to-PDF 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 DOCX files.

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

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

Can I automate the DOCX-to-PDF conversion on my own servers?

Definitely. You can automate the DOCX-to-PDF 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 DOCX files for online PDF 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 DOCX sheets into a single PDF using C#?

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

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

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

Does the DOCX to PDF API work with .NET Core, .NET 5 and newer versions?

Absolutely. Our DOCX-to-PDF 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 PDFs created from DOCX files?

Yes. Conholdate.Total provides convenient features to enhance your PDF documents. You can add watermarks for branding or confidentiality, apply password protection, and even customize other PDF 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 DOCX files to PDF in .NET?

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

What are the licensing costs for Conholdate.Total’s DOCX to PDF 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 DOCX file format?

The DOCX file format serves as a storage medium for documents created in Microsoft Word, succeeding the earlier DOC format. It is a constituent of the Microsoft Office Open XML format and functions as the primary file format for Microsoft Word 2007 and subsequent versions. Introduced alongside Microsoft Office 2007 on January 17, 2007, the DOCX format is built upon the Open Packaging Conventions (OPC), an open XML-based file format developed by Microsoft for office documents.

Utilizing a combination of ZIP file structure and XML files, the DOCX format adheres to the OPC standards, which ensure consistent storage of digital content in a universally compatible file format. By employing the widely recognized ZIP compression format, DOCX files can significantly reduce in size compared to their predecessor, the DOC format. This compression feature allows for efficient storage, transmission, and sharing of DOCX documents across the internet.

The widespread adoption of DOCX as the preferred file format in most office programs can be attributed to its user-friendly nature. It offers enhanced usability, faster document creation, and easier transferability compared to other formats. Additionally, DOCX files are readily viewable and accessible on various applications and devices, including smartphones, tablets, and personal computers. This versatility enables seamless document handling and ensures compatibility across different platforms.

An important aspect of the DOCX format lies in its promotion of compatibility among different applications. By utilizing a standardized format, DOCX eliminates the need for reliance on proprietary file formats that may suffer from compatibility issues. Its widespread acceptance and usage make DOCX a valuable tool within the business world, streamlining document exchange and collaboration.

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What is PDF file format?

PDF (Portable Document Format) is a widely used document file format developed by Adobe Systems in 1993. It was specifically designed to provide a platform-independent solution for storing and sharing documents across various operating systems and over the Internet. PDFs utilize a vector-based drawing model, storing graphical elements such as lines, shapes, and images as mathematical equations. This unique approach ensures that PDFs are resolution independent, guaranteeing consistent document quality regardless of the viewing device or program.

One of the key advantages of PDFs is their support for a range of security features. Encryption, password protection, digital signatures, and document watermarking are among the security measures available. These features make PDFs highly secure and suitable for sensitive documents, such as medical records, legal documents, government forms, and invoices. The printing industry also heavily relies on PDFs to facilitate electronic communication with customers.

Creating PDFs is a straightforward process, as they can be generated from various electronic document formats, including Word documents, PowerPoint presentations, and webpages. It’s important to note that PDFs are typically not editable directly. To modify the content of a PDF, it must first be converted to a different file format that supports editing. Numerous software programs, many of which are freely available for download, offer the functionality to convert PDFs to editable formats.

PDFs have gained immense popularity and have become a standard method for document sharing due to their versatility, security features, and consistent formatting. Their compatibility across different devices and operating systems ensures seamless document access for users. Additionally, PDFs preserve the layout, fonts, and images of the original document, making them an ideal choice for sharing visually rich content.

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Popular DOCX Conversion Options with .NET

Convert DOCX to PDF

(Portable Document Format)

Convert DOCX to EXCEL

(Spreadsheet Files)

Convert DOCX to IMAGE

(Digital Image Files)

Convert DOCX to DOC

(Microsoft Word Binary Format)

Convert DOCX to DOCX

(Office 2007+ Word Document)

Convert DOCX to DOCM

(Microsoft Word 2007 Marco File)

Convert DOCX to DOT

(Microsoft Word Template Files)

Convert DOCX to DOTX

(Microsoft Word Template File )

Convert DOCX to DOTM

(Microsoft Word 2007+ Template File)

Convert DOCX to TXT

(Text Document)

Convert DOCX to RTF

(Rich Text Format)

Convert DOCX to HTML

(Hyper Text Markup Language)

Convert DOCX to HTM

(Hypertext Markup Language File)

Convert DOCX to MHTML

(Web Page Archive Format)

Convert DOCX to MHT

(MHTML Web Archive)

Convert DOCX to XLS

(Microsoft Excel Spreadsheet (Legacy))

Convert DOCX to XLSX

(Open XML Workbook)

Convert DOCX to XLSM

(Macro-enabled Spreadsheet)

Convert DOCX to XLSB

(Excel Binary Workbook)

Convert DOCX to XLT

(Excel 97 - 2003 Template)

Convert DOCX to XLTX

(Excel Template)

Convert DOCX to XLTM

(Excel Macro-Enabled Template)

Convert DOCX to XLAM

(Excel Macro-Enabled Add-In)

Convert DOCX to CSV

(Comma Seperated Values)

Convert DOCX to TSV

(Tab Seperated Values)

Convert DOCX to DIF

(Data Interchange Format)

Convert DOCX to SXC

(StarOffice Calc Spreadsheet)

Convert DOCX to FODS

(OpenDocument Flat XML Spreadsheet)

Convert DOCX to PPT

(Microsoft PowerPoint 97-2003)

Convert DOCX to PPTX

(Open XML presentation Format)

Convert DOCX to PPS

(PowerPoint Slide Show)

Convert DOCX to PPSX

(PowerPoint Slide Show)

Convert DOCX to PPSM

(Macro-enabled Slide Show)

Convert DOCX to POT

(Microsoft PowerPoint Template Files)

Convert DOCX to POTX

(Microsoft PowerPoint Template Presentation)

Convert DOCX to PPTM

(Macro-enabled Presentation File)

Convert DOCX to POTM

(Microsoft PowerPoint Template File)

Convert DOCX to ODT

(OpenDocument Text File Format)

Convert DOCX to OTT

(OpenDocument Standard Format)

Convert DOCX to OTP

(OpenDocument Standard Format)

Convert DOCX to ODP

(OpenDocument Presentation Format)

Convert DOCX to ODS

(OpenDocument Spreadsheet)

Convert DOCX to EMZ

(Windows Compressed Enhanced Metafile)

Convert DOCX to WMZ

(Compressed Windows Metafile)

Convert DOCX to SVG

(Scalar Vector Graphics)

Convert DOCX to SVGZ

(Compressed Scalable Vector Graphics)

Convert DOCX to XPS

(XML Paper Specifications)

Convert DOCX to TEX

(LaTeX Source Document)

Convert DOCX to DCM

(DICOM Image)

Convert DOCX to WMF

(Windows Metafile)

Convert DOCX to EMF

(Enhanced Metafile Format)

Convert DOCX to BMP

(Bitmap Image File)

Convert DOCX to PNG

(Portable Network Graphic)

Convert DOCX to GIF

(Graphical Interchange Format)

Convert DOCX to JPEG

(Joint Photographic Expert Group Image)

Convert DOCX to TIFF

(Tagged Image File Format)

Convert DOCX to WEBP

(Raster Web Image Format)

Convert DOCX to JP2

(JPEG 2000 Core Image)

Convert DOCX to TGA

(Truevision Graphics Adapter)

Convert DOCX to PSB

(Photoshop Large Document Format)

Convert DOCX to PSD

(Photoshop Document)

Convert DOCX to EPUB

(Open eBook File)

Convert DOCX to MD

(Markdown Language)

Convert DOCX to FODP

(Formula One for Data Presentation)

Convert DOCX to JPG

(Joint Photographic Expert Group Image)

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