Site is OK?

Not yet independently verified. The launch date rests on the maker's own Show HN post of 10 October 2026. The terms page is dated 17 September 2026, so the service may be older than the post. Every detail comes from the maker's own site, which names Lindeas Ltd as the operator but states no country or address. The compliance mapping on the site is the maker's own and is not a certification. No independent report was found. We will update this when it can be confirmed, and remove this note.

Site is OK? is a web service that checks a website's health, DNS, SSL certificates and email configuration, and keeps watching it afterwards. It is run by Lindeas Ltd and was shown on Hacker News on 10 October 2026. A single check needs no account.

What Site is OK? does

An instant check runs more than 30 tests covering DNS, TLS certificates, HTTP security headers, redirects, cookies and email authentication records (SPF, DKIM and DMARC). A free account adds daily re-scans, uptime probes every ten minutes and alerts when something breaks or a certificate is close to expiry. Results can be shared as snapshots that stay frozen at one scan.

Registered users can also run deeper probes that look for exposed sensitive files such as environment and Git files, backup files and open mail relays. These need proof of control of the domain, which the user gives by publishing a token on the host. The scanner identifies itself with a SiteIsOkBot user agent, paces its requests and backs off when a firewall pushes back. The operator says its checks map to PCI DSS, CA/Browser Forum and RFC guidance, and states that the service is not a certification.

Who it is for

The service addresses people looking after their own websites, from a single domain upward. The terms limit intrusive checks to domains the user owns or is authorised to test, require users to be 16 or older, and warn that results are point-in-time and may include false positives or negatives.

Key facts

• Operator: Lindeas Ltd
• Launch: Show HN, 10 October 2026
• Free: $0, one monitored domain, uptime monitoring, blacklist checks and email alerts
• Pro: $5 a month or $50 a year, 20 domains, change history, digests and two-factor authentication
• Business: $25 a month or $250 a year, 100 domains, weekly reports and priority support
• Billing: through a merchant of record; refunds follow that provider's policy
• Website: siteisok.com