It is like @CanIUse but for the browser devtools, created & curated by @pankajparashar. Get weekly tips & tricks for your favorite browser devtools by subscribing to the newsletter!
Inspect > Open the Accessibility pane on the right (Click the >> icon to show more tabs, if hidden) > Check "Enable full-page accessibility tree" > Reload Devtools.
Click on the floating icon in the top right in the Elements panel which says, "Switch to Accessibility tree view".