SVG images can be used as an image format, in a number of contexts. Many browsers support SVG images in:

Gecko-specific contexts

Additionally, Gecko 2.0 (Firefox 4 / Thunderbird 3.3 / SeaMonkey 2.1) introduced support for using SVG in these contexts:

Restrictions

For security purposes, Gecko places some restrictions on SVG content when it's being used as an image:

  • JavaScript is disabled.
  • External resources (e.g. images, stylesheets) cannot be loaded, though they can be used if inlined through data: URIs.
  • :visited-link styles aren't rendered.
  • Platform-native widget styling (based on OS theme) is disabled.

Note that the above restrictions are specific to image contexts; they don't apply when SVG content is viewed directly, or when it's embedded as a document via the <iframe>, <object>, or <embed> elements.

Specifications

Specification Status Comment
HTML5
The definition of 'SVG within <img> element' in that specification.
Recommendation Defines the usage of SVG within <img> elements.
CSS Backgrounds and Borders Module Level 3
The definition of 'SVG within 'background-image' CSS property' in that specification.
Candidate Recommendation Defines the usage of SVG within the background-image property.

See also

Document Tags and Contributors

Last updated by: fscholz,