This table was constructed to provide developers with a quick, visual reference for add-on
API support across browsers. The table links directly to API documentation where possible.
It is our intent to update this table as browsers release additions to their add-on API sets.
Let us know about any corrections or additions using the feedback form link located in the key below.
API Support: The functionality is supported with an easy to use API - 1 point
Raw Support: The functionality has experimental or non-API support - 1/2 point
No Support: The functionality is not accessible to developers - 0 points