a11y-outline от xi

Many screen readers like JAWS or NVDA have shortcuts to bring up a list of
landmarks, headings or links. This browser extension provides the same
functionality without requiring a screen reader.

This is mainly useful for two audiences:

• Sighted web developers who want to get a feeling for how blind users might experience their content.
• Sighted users who like this kind of navigation.

Usage

Pressing Ctrl+Shift+7 brings up a dialog. You can use the up/down arrow keys to select a list. With the tab key you can switch to the actual list and navigate
it with arrow keys.