Deprecated: This feature is no longer recommended. Though some browsers might still support it, it may have already been removed from the relevant web standards, may be in the process of being dropped, or may only be kept for compatibility purposes. Avoid using it, and update existing code if possible; see the compatibility table at the bottom of this page to guide your decision. Be aware that this feature may cease to work at any time.

The <altGlyphDef> SVG element defines a substitution representation for glyphs.

Usage context

CategoriesText content element
Permitted contentEither:
one or more <glyphRef> elements, or
one or more <altGlyphItem> elements


Global attributes

Specific attributes


DOM Interface

This element implements the SVGAltGlyphDefElement interface.


Scalable Vector Graphics (SVG) 1.1 (Second Edition)
# AltGlyphDefElement

Browser compatibility

BCD tables only load in the browser

See also