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The Syncfusion .NET PDF library allows you to create accessible PDF and convert from Word and HTML to tagged PDF. The accessible or tagged PDF is a PDF that includes a set of structure instruction that defines, reading order, and meaning of significant elements such as figures, images, lists, tables, and so on. The accessible PDF makes content accessible to users who rely on assistive technology. The Syncfusion Essential PDF library helps create accessible or PDF/UA. PDF documents created using the Essential PDF library are compliant with section 508. In addition, it provides many customizing options like marking content as artifact, alternate text, tag order, etc.

Supported Tag Elements

The Essential PDF supports adding tags to PDF elements such as text, image, shapes, form fields, annotations, hyperlinks, tables, lists, etc.

Auto-tag PDF

The Syncfusion PDF .NET library is capable of automatically tagging each PDF element based on the creation order to create accessible PDF.

Auto Tag



In PDFs, artifacts can be graphic objects, or other markings for decoration that are not relevant for understanding the content of the document such as headers, footers, page numbers, watermarks, cut marks, color bars, background images, lines separating content, or decorative images. As specified in PDF/UA, all the page content in PDF is either contained in the logical structure or marked as an artifact, and Syncfusion Essential PDF library provides support for both.

Reading Order

This is the order in which assistive technologies like screen readers or refreshable Braille displays to present the content in a PDF. Basically, the element that draws first takes precedence over the tag reading order. You can re-order the tagged elements in a document using the order property in the Syncfusion PDF library.

Reading Order

Convert HTML to tagged PDF

Convert HTML to Tagged PDF

You can also convert HTML or URL to tagged PDF with the exact layout and appearance of a HTML content using the IE rendering engine.

Convert Word to Tagged PDF

Supports converting accessible and inaccessible Word documents to tagged PDF. It preserves the exact layout and appearance of the Word document. You can also convert table of contents to PDF bookmarks.

Convert Word to tagged PDF


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Syncfusion’s file format components helped me create the reports I needed, fast. – J. Pereira, Software Developer.

The libraries have been built from scratch and refined for more than a decade to provide blazing-fast performance, comprehensive API, and compatibility across the latest and older versions of these files.

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Syncfusion File Format Libraries - Manipulate Excel, Word, PowerPoint, and PDF files

Read and write Excel, Word, PDF, and PowerPoint files. Also includes integrated visualization capabilities. Advanced features include support for pivot tables, pivot charts, mail-merge, and extensive formatting.


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