HTML Support Limitations: Supported and Unsupported Tags

• Sep 19, 2023
• 2 minutes to read

Supported HTML Tags

The table below lists HTML tags that the RichEditDocumentServer supports. External links are processed for inline pictures and style sheets (CSS files). The ID and Class attributes are interpreted for all tags, including the unlisted tags. These attributes specify a style applied to a document part defined by a specific tag.

Tag	Attributes	Notes
a	dir
b	dir
background-color		The tag specifies the ParagraphPropertiesBase.BackColor property.
base
basefont	size color face dir
big	dir
blockquote	dir
br	dir
center	dir
code	dir
del	cite datetime
div	page-break-before page-break-after page-break-inside background-color border (CSS) dir	Only the always property value is supported for the page-break-before tag.
em	dir
font	size color face dir
h1-h6	align dir	Specify a paragraph’s Paragraph.OutlineLevel property to mark text in an HTML output with H1 - H6 tags. Paragraphs with outline levels higher than 6 are exported as text enclosed in a P tag.
head
html
hr	align color noshade size width
i	dir
ins	cite datetime
img	align src height width	If the align attribute is not specified, the image is considered as inline.
li	type value dir
link	href type media dir
meta
ol	type value align dir
p	align dir line-height
small
span
strike	dir
strong	dir
style
sub	dir
sup	dir
table	align bgcolor border bordercolor cellpadding cellspacing dir width	The dir attribute reorders table columns and applies the table indent (specified by the Indent property) to the right side of the table.
td	align bgcolor bordercolor colspan height nowrap rowspan text-align valign width	The align tag is supported in Internet Explorer only. The bgcolor attribute specifies the TableCellPropertiesBase.NoWrap property value. The RichEditDocumentServer interprets the bordercolor attribute differently from an HTML browser.
th	any allowed
tr	align bgcolor bordercolor height text-align valign	The align attribute is supported in Internet Explorer only.
u	dir
ul	dir

Unsupported HTML Tags

• <base> tag with href attribute;
• <div> tag with border, align and float CSS attribute;
• <li> tag with list-style-image CSS attribute;
• <margin> tag;
• <script> tag;
• <tab> tag;
• <table> tag with cols attribute;
• <td> tab with bordercolor and nowrap attributes;
• <title> tag;
• !important declaration;
• word-wrap, break-word, and letter-spacing css properties;
• css3 shapes;
• <ui> tag with type attribute.