Suppose I click any linked resource and I end up with this:
... or this:
... but to me as a user it's obvious that this resource may have once existed, I'd like an extension that changes the above to include a link (preferably configurable) to The Wayback Machine. That is, if I visit a URL described by placeholder
$URL I'd like the above error pages to give me a link to one or several (at my discretion!) cached alternatives.
That is to
https://web.archive.org/web/*/$URL for The Wayback Machine.
Is there such an extension?