★ NEW EXHIBITS APPEAR WITHOUT WARNING ★ SUBMIT ONLY A DOMAIN — OUR ROBOT FINDS /404 ★ SOFT 404s MAY BE OVERRIDDEN BY THE CURATOR ★

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GitHub Pages explains the missing file

A pale gray hosting-error screen combines thin 404 numerals with detailed file and configuration advice.

w3c.github.io/404 — desktop + phone evidence
Desktop viewport · 1440 × 900
w3c.github.io: A pale gray hosting-error screen combines thin 404 numerals with detailed file and configuration advice., captured at a desktop viewport
Phone viewport · 390 × 844
w3c.github.io: A pale gray hosting-error screen combines thin 404 numerals with detailed file and configuration advice., captured at a phone viewport

HTTP 404

Domain: w3c.github.io

Captured: August 31, 2026

Views: desktop + phone capture

  • hosting
  • server-error
  • helpful

Curator's note

Captured at w3c.github.io, this is the host's generic GitHub Pages fallback, not a bespoke W3C design. Its instructions address site maintainers as well as visitors, which explains the unusually technical recovery text.

This screenshot documents an external site. Copyright and trademarks remain with their respective owners. Request a correction or takedown.

mailchimp.com — HTTP 404
Mailchimp illustrated 404 page

Mailchimp admits it is lost

A restrained utility page explains the dead end and offers one bright route back to the homepage.

  • copywriting
  • minimal
  • helpful
dropbox.com — HTTP 404
Dropbox hand-drawn 404 page

Dropbox draws the impossible

A hand-drawn wrong turn with plenty of useful exits.

  • illustration
  • minimal
  • helpful
airbnb.com — HTTP 404
Airbnb 404 page with a dropped ice cream animation

Airbnb waters the wrong turn

A tiny character tends an equally tiny plant beside a large, immediate ‘Oops!’

  • illustration
  • character
  • helpful
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