.NET Word Library - Convert Word Documents to PDF in C#
- Convert DOC and DOCX files to PDF, PDF/A, and PDF/UA in C# without Microsoft Word.
- Preserve document layout, fonts, images, tables, hyperlinks, and formatting with high fidelity.
- Run Word-to-PDF conversion on Windows, Linux, macOS, Docker, and cloud platforms.
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Overview
The Syncfusion .NET Word Library lets developers convert Word documents to PDF in C# with just a few lines of code. Convert DOC and DOCX files while preserving layouts, fonts, images, tables, hyperlinks, and document formatting without installing Microsoft Word or relying on Office Interop. The library also supports PDF/A conversion for long-term archiving, accessible PDF/UA output, fillable PDF forms, tracked changes, comments, bookmarks, and configurable font embedding and substitution. Use it in desktop, web, server, cloud, Docker, and cross-platform .NET applications.
Convert Word files to PDF using C#
This C# example shows how to convert a Word document to PDF with just a few lines of code using the Syncfusion .NET Word Library.
Key features of Word-to-PDF conversion
Accessible PDF conversion
Create a 508-compliant accessible Word document using Microsoft Word or the Syncfusion .NET Word Library, and convert it into a tagged PDF (PDF/UA) while enforcing the required PDF/A conformance level to ensure accessibility, standards compliance
Font Fallback and Substitution
Configure fallback fonts to render Unicode characters when the selected font lacks the required glyphs and use font substitution to automatically replace missing fonts with device or custom fonts for consistent document rendering.
Fillable PDF Forms
Design your application forms as Word documents using Microsoft Word and convert them to fillable PDF forms using the Syncfusion .NET Word Library.
Comments
Preserve comment balloons in the converted PDF from the Word document. Also, customize balloon colors for enhanced visual clarity.
Bookmarks
Export the paragraphs with heading styles or bookmarks as PDF bookmarks.
Identical Image Optimization
Enable the settings to reduce main memory usage during Word-to-PDF conversion by reusing identical images in the Word document.
Hyphenation
Enables the addition of hyphens to text within a Word document during Word-to-PDF conversion, using specified language dictionaries.
Track Changes
Preserve revision marks in the converted PDF, retaining tracked changes from the Word document and offering customization options for track changes markup.
Alternate Chunks
Import or ignore the embedded alternate chunks (other Word documents) in a document when converting it to PDF.
Explore Word-to-PDF conversion references
Discover these resources from our knowledge base to enhance your efficiency in converting Word documents to PDF:
Knowledge base
How to convert multiple Word documents to multiple PDFs and then zip the PDFs in C#
Knowledge base
How to preserve simple markup, all markup, and no markup of tracked changes during Word-to-PDF conversion
Explore these resources for comprehensive guides, knowledge base articles, insightful blogs, and ebooks.
Product Updates
Technical Support
Frequently Asked Questions
What file formats does the .NET Word Library support for conversion to PDF?
Word file formats such as DOC, DOT, DOCX, DOTX, DOCM, DOTM, Word Processing 2007 XML, Word 2003 XML Document (*.xml), as well as other formats including HTML, text, and Markdown are supported.
Does the .NET Word Library support Word-to-PDF conversion on Linux and cloud platforms?
Yes, you can perform Word-to-PDF conversion in Linux and different cloud platforms like Azure, Amazon Web Services, and Google Cloud Platform using the .NET Word Library.
What happens if required fonts are not installed on the production machine during Word-to-PDF conversion?
If required fonts aren’t installed, Word Library uses alternatives, possibly causing differences in generated PDFs. Refer to the documentation for solutions to resolve this issue.
How can I convert a Word document to PDF in C#?
Install the Syncfusion.DocIORenderer.Net.Core NuGet package, load the Word document using the Syncfusion .NET Word Library, and convert it to PDF using the DocIORenderer API. The conversion works without Microsoft Word or Office Interop and preserves the document’s layout, fonts, images, tables, and formatting.
Can the .NET Word Library handle conversion of password-protected Word documents to PDF?
Yes, you can programmatically open password-protected Word documents and convert them to PDF using the .NET Word Library.
How can I use Word-to-PDF conversion functionality in my application?
You can access it through the Syncfusion.DocIORenderer.Net.Core NuGet package. Detailed code samples and tutorial video are available in the documentation.
Is multithreading supported in Word-to-PDF conversion?
Yes. Syncfusion DocIO supports multithreaded execution and is designed to be thread-safe for Word document processing and conversion scenarios. This enables developers to process multiple Word-to-PDF conversions concurrently, helping improve throughput in enterprise and large-scale applications.
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