IsSiteDown

Tracking since Apr 11, 2026.

Changelog

• Apr 21, 2026
  description

  IsSiteDown gives you an instant, one-click answer. When a website isn't loading, click the extension icon to find out whether the problem is a global outage or something on your end.
  
  HOW IT WORKS
  • Navigate to a supported site
  • Click the IsSiteDown icon
  • Get a clear status: Operational, Degraded, or Down
  • See which sources were checked and when
  
  WHAT WE CHECK
  • Official status pages (StatusPage.io, vendor APIs)
  • HTTP pages
  • DNS resolution
  • TLS certificate validity
  
  PRIVACY
  • Sends only the domain name to our check service
  • No browsing history, no cookies, no tracking
  • No account required
  
  LIMITATIONS
  • Works with supported sites only (30+). Arbitrary domains are not covered, but you can request to support the site you need.
  • Checks run on click, not automatically (free version).
  • Partial or regional outages may not always be detected.
  
  SUPPORTED SITES
  See here: https://www.is-site-down.com/sites
  
  Built for people who need a fast, honest answer — not another dashboard.

  IsSiteDown lets you check the current site in one click, with official status and incident information where available.
  
  If a website is not loading, click the extension icon to instantly check whether the service is operational, degraded, or down. For supported services, IsSiteDown uses the provider’s official status page or status API whenever available, and adds HTTP, DNS, and TLS checks for extra transparency. Full list of supported sites: is-site-down.com/sites
  
  HOW IT WORKS
  • Open a supported site
  • Click the IsSiteDown icon
  • Get a clear status: Up, Degraded, or Down
  • See which checks were used and when
  
  WHAT WE CHECK
  • Official status pages and vendor status APIs
  • HTTP availability
  • DNS resolution
  • TLS certificate validity
  
  PRIVACY
  • Sends only the domain name to our check service
  • No browsing history, no cookies, no tracking
  • No account required
  
  LIMITATIONS
  • Supported sites only
  • In the free version, checks run on click only
  • Partial or regional outages may not always be detected
  • Some services do not provide a public official status page or API

• Apr 21, 2026
  short_description

  Is the site down for everyone, or just you? Check if it's a global outage or a local issue — instantly.

  One-click check for the current site, with official details on service issues whenever available.

Permissions & access

Permissions

tabsstorage

Host access

None declared

Screenshots