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Re:Ask HN: Happy 404 Day. Whats your favorite 404 error page? by gwbas1c on Thursday April 04, 2024 @01:20PM (#39933313)
Brave offers to check the Wayback Machine for a cached version of the page.

Basically: 404 tells crawlers that the URL is invalid.

The HTTP server also has to return something,. It could simply return 0-length content and allow the browser to show its error page, but that wouldn't be "on brand."

Re:Ask HN: Happy 404 Day. Whats your favorite 404 error page? by nashashmi on Thursday April 04, 2024 @03:00PM (#39934462)
Thanks for this. Chrome extension can be found here. https://chromewebstore.google.com/detail/web-cache-viewer/pb...