| Interface | Supported | Notes |
|---|---|---|
| Accessible | Yes |
See supported object attributes |
| Action | Yes | All methods |
| Application | Yes | All methods |
| Component | Yes | All methods |
| Desktop | No | |
| Document | Yes | All methods? |
| EditableText | Yes | All methods |
| Event | Yes |
See supported events |
| Hyperlink | Yes | Any object embedded in text is considered a hyperlink! |
| Hypertext | Yes | Any text with objects embedded in it is considered a hypertext! |
| Image | No | ROLE_IMAGE is supported, and is enough |
| LoginHelper | No | |
| Registry | No? | |
| Relation | Yes |
See supported relations |
| Role | Yes |
See supported roles |
| Selection | Yes | Not yet supported for text |
| Selector | No | |
| State | Yes |
See supported states |
| StreamableContent | No | Could apply to plugins, but probably not objects rendered by Gecko |
| Table | Yes | In addition, the object attribute layout-guess=true when Gecko thinks the table is for layout, not for data |
| Text | Yes |
See supported text attributes |
| Value | Yes |