What does Lemwatch monitor?

Lemwatch runs 20+ automated checks per site: uptime, response time, SSL/TLS expiry, domain expiry, DNS changes, sitemap health, broken links, content changes, SEO audits, mobile usability, security headers, and more.

Yes. The free tier monitors up to 5 sites. Pro is $19/month for 50 sites and Agency is $59/month for 100 sites, both with full feature access.

How is Lemwatch different from UptimeRobot or Pingdom?

Lemwatch bundles uptime, change detection, SEO audits, security scans, and a public API in one platform — features competitors charge separately for. It also includes team workspaces, white-labelled status pages, and a webhook system out of the box.

Does Lemwatch send alerts?

Yes. Lemwatch supports email, browser push, webhooks, and per-site notification routing so the right person hears about the right incident.

Is there a public API?

Yes. Pro and Agency plans get a public REST API with webhooks for sites, checks, incidents, and reports.

HTTP 103 Early Hints

The server sends preliminary headers to allow the browser to start preloading resources before the final response.

What 103 means

HTTP 103 Early Hints allows the server to send HTTP headers before the final response. Browsers can start preloading linked resources (CSS, fonts, scripts) while the server is still preparing the full response. This can significantly improve page load performance.

Common causes

Server supports early hints for performance optimisation
CDN/proxy sends preload hints
Server uses Link headers for critical resources

How to fix it

This is a performance feature — no fix needed
To implement, configure your server to send Link headers with rel=preload

SEO impact

Positive indirect impact. Faster page loads improve Core Web Vitals, which Google uses as a ranking signal.

Monitoring tip

LemWatch tracks Core Web Vitals including LCP. Sites using 103 Early Hints often see improved LCP scores.

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