Is williamdue.github.io safe? Based on what we found, the answer depends heavily on what you expect to do there. This is a GitHub Pages site with almost no public identity: no about page, no contact details, no social media links, and no history in the Wayback Machine. Combined with a malformed WHOIS record, that's a pattern you'd see in throwaway or experimental domains, not established projects.
That said, the site is technically sound — it uses modern encryption, loads fast on a reputable CDN (Fastly), and has no malware flags from Google. The security side is fine. The problem is transparency. When a site is this anonymous, it's hard to verify who's behind it or whether they'll act responsibly.
If this is just someone's personal blog or portfolio, the missing privacy policy and contact page are perfectly normal. But if you're being asked to share personal data, make a payment, or download software, there is no evidence here to support that trust. Most real services give you a way to contact them and a track record you can check. williamdue.github.io offers neither. Treat it as an unknown until proven otherwise.