What is Html2OpenXml?

Html2OpenXml is a small .Net library that convert simple or advanced HTML to plain OpenXml components. This program has started in 2009, initially to convert user's comments from SharePoint to Word.

This library supports both .Net Framework 4.6.2, .NET Standard 2.0 and .NET 8 which are all LTS.

Depends on DocumentFormat.OpenXml.

Supported Html tags

Refer to w3schools’ tag list to see their meaning

<a>
<h1-h6>
<abbr> and <acronym>
<b>, <i>, <u>, <s>, <del>, <ins>, <em>, <strike>, <strong>
<br> and <hr>
<img>, <figcaption>
<table>, <td>, <tr>, <th>, <tbody>, <thead>, <tfoot> and <caption>
<cite>
<div>, <span>, <font> and <p>
<pre>
<sub> and <sup>
<ul>, <ol> and <li>
<dd> and <dt>
<q> and <blockquote> (since 1.5)
<article>, <aside>, <section> are considered like <div>

Javascript (<script>), CSS <style>, <meta> and other not supported tags does not generate an error but are ignored.

Tolerance for bad formed HTML

The parsing of the Html is done using a custom Regex-based enumerator. These are supported:

	samples
Ignore case	<span>Some text<SPAN>
Missing closing tag or invalid tag position	<i>Here<b> is </i> some</b> bad formed html.
no need to be XHTML compliant	Both <br> and <br/> are valid
Color	red, #ff0000, #f00, rgb(255,0,0,.5), hsl(0, 100%, 50%) are all the red color
Attributes	<table id=table1> or <table id="table1">

Acknowledgements

Thank you to all contributors that share their bug fixes: scwebgroup, ddforge, daviderapicavoli, worstenbrood, jodybullen, BenBurns, OleK, scarhand, imagremlin, antgraf, mdeclercq, pauldbentley, xjpmauricio, jairoXXX, giorand, bostjanKlemenc, AaronLS, taishmanov. And thanks to David Podhola for the Nuget package.

Logo provided with the permission of Enhanced Labs Design Studio.

Support

This project is open source and I do my best to support it in my spare time. I'm always happy to receive Pull Request and grateful for the time you have taken If you have questions, don't hesitate to get in touch with me!