Sites Radar

I build and maintain websites for clients, and the failures that kept causing awkward support requests were rarely the obvious ones. It was the SSL certificate that did not renew after a DNS change, the links that started returning 404s after a CMS update, or the DMARC record that disappeared during a migration.

The client usually noticed before I did.

So I built SitesRadar: a website health monitor for freelancers and small agencies. It checks client sites on a schedule for downtime, SSL and domain expiry, broken links, HTTP errors, DNS changes, email deliverability, SEO regressions, and metadata leaks from linked files. When something changes, it sends an alert in plain English, per client site.

The free plan monitors one site forever with every check included and no credit card. There is also a free, no-signup checker if you just want to run a one-off report: https://www.sitesradar.com/checker/website-checker

I am building this around a simple idea: uptime is only the beginning. The useful alert is knowing what changed, how urgent it is, and which client needs attention before they find the problem themselves.

I would love feedback from people who manage websites for clients: what is the quiet failure you get called about most often?