Know your sites are healthy before your clients tell you they aren't.
SiteSentry runs SSL, security-header, SEO, and broken-link checks on every site you manage — and emails you the moment something breaks.
Nine checks, every run
The same checks we use to keep our own network of production sites healthy — now running for yours.
SSL expiry
Catch certificates expiring before your visitors see a browser warning.
Uptime & response time
Full HTTP check on every run — status code, redirect chain, response time.
Security headers
HSTS, X-Frame-Options, X-Content-Type-Options, Referrer-Policy, and more.
Compression
Confirms gzip/brotli is actually being served, not just configured.
SEO tags
Title, meta description, canonical, Open Graph, Twitter Card, JSON-LD, H1 count.
OG image
Fetches your social preview image and checks it's the right dimensions.
Sitemap & robots.txt
Real XML parsing and per-agent robots.txt rules — not a guess.
Favicon
Confirms a favicon actually resolves and loads.
Broken links
Crawls on-page links and flags anything returning an error.
Built for agencies & freelancers
Managing more than one client site is where things quietly break. SiteSentry watches all of them from one dashboard, so you find out first — not your client.
Alerts you can trust
New issues email you immediately. Fixed issues clear automatically. No duplicate alerts spamming your inbox — each issue notifies once per day, at most.