Pulse is a free public health scanner — anyone can drop in a URL and get a graded uptime, performance, security, and SEO snapshot in seconds.
Quick answer
Pulse is a no-signup site health check. Enter a URL, get an A–F grade across uptime, performance, security headers, and SEO fundamentals in about 20 seconds.
What it checks
Uptime probe + response time from one region
Core Web Vitals proxy (TTFB, HTML size)
Security headers (HSTS, CSP, X-Frame, cookies)
SEO fundamentals (title, meta, canonical, robots)
SSL grade and expiry
Where to find it in Lemwatch
/pulse — public, no login required.
How to use it
Go to /pulse and paste a URL.
Wait ~20 seconds for the scan.
Review the graded snapshot.
Claim the site to keep monitoring it — see claim & share.