--- title: "Website monitoring: uptime, SSL, domain and speed · MetricDeck" description: "Hourly uptime checks confirmed before a site is called down, SSL and domain expiry, and mobile and desktop speed for every client's site, with alerts." url: https://metricdeck.app/features/site-health updated: 2026-10-06 --- Site health # Know a client's site is down before they do Hourly uptime checks, SSL and domain expiry and page speed for every client's site, with an alert when one slips. [Start free](https://metricdeck.app/signup) [See the live demo](https://metricdeck.app/demo) * Free for one client * No card * Read-only access Trailhead Coffee · Site health · trailheadcoffee.example Sample data The numbers behind it Mobile performance, last 2 runs (median) 47 Mobile performance, the month before (median of 27 runs) 79 Largest Contentful Paint (main content visible) 2.6s → 4.6s Uptime Checked every hour · 524 ms on average 24 hours 100% 24 checks 7 days 98.81% 168 checks, 2 down 30 days 99.72% 720 checks, 2 down 36 hours ago Now Incidents Runs of checks that were down, confirmed by a second try * Server error (HTTP 502) 1 day ago · 2 checks · back within 2 hours Certificate and domain Checked each night on the website * SSL certificate 9 days left * Domain registration 188 days left Page speed Lighthouse performance, median of the last 2 runs, against the month before mobile 47 was 79 desktop 93 was 93 Trailhead Coffee is one of the demo agency's made-up clients. The alerts are what MetricDeck's rules raise on its latest checks; the cards are the Site health tab's. **Short outages are the ones nobody sees.** Trailhead Coffee's site answered “Server error (HTTP 502)” for 2 checks in a row 1 day ago, and was back before anyone opened a browser. It's on record, with its reason, for the next client call. ## The monthly check, before and after Making sure one client's site is up, secure and fast. Time you get back 2 h 20 min A month, if you look after 10 clients. For one client By hand 15 min With MetricDeck 1 min Our estimate for checking one site once a month by hand. MetricDeck checks uptime every hour and the rest every night, which nobody does by hand. By hand 15 min 1. 01 Open the site and check the certificate's expiry date in the browser 2 min 2. 02 Look up the domain's expiry with the registrar 3 min 3. 03 Run PageSpeed Insights on mobile and desktop, and note the scores 5 min 4. 04 Compare them with last month's 2 min 5. 05 Read the uptime tool's log for outages 3 min With MetricDeck 1 min 1. 01 Nothing to run: you hear when the site goes down, a date gets close or speed falls Automatic 2. 02 Open Site health for the detail when you want it 1 min ## What you get * ### Uptime every hour Each failure is tried again 5 seconds later before the site is called down, so a blip never wakes you. * ### Incidents with a reason No DNS, a timeout, a refused connection, a certificate error, a server error or a 404, with when it began and how long it lasted. * ### Expiry dates, in time The certificate at 21 days and again at 7, the domain at 30 days and again at 7, with the registrar to renew it with. * ### Speed, mobile and desktop Lighthouse scores, loading times and real visitors' numbers, with an alert when a score falls out of good or is poor now. * ### More pages than the home page Watch the pages that matter: 2 on Starter, 5 on Pro and 10 on Agency, each with its own uptime and speed. * ### AI search readiness Whether ChatGPT, Claude and Perplexity can read each page, [checked every night](https://metricdeck.app/features/ai-search-readiness). ## Why you can trust the alerts * A site is only called down after two failed checks in a row, 5 seconds apart. * A server that turns our checker away is running, so it counts as up and never alerts. * Speed alerts take two slow runs, never one, so Lighthouse's own wobble stays quiet. * Failures on Google's side, like a PageSpeed error, are never blamed on the site. FAQ ## Questions How often is each site checked? Uptime every hour. The certificate, the domain, page speed and AI search readiness with every full sync: each night, and whenever you press Sync now. What counts as down? A check that fails twice, 5 seconds apart: the address doesn't resolve, the server doesn't answer or refuses the connection, the certificate fails, or the page returns a server error or a 404\. A server that answers but turns our checker away (401, 403 or 429) is running, so it counts as up and never alerts. Page speed scores jump around. Won't that mean false alarms? Lighthouse scores move 5 to 10 points between identical runs, so one slow run never alerts. MetricDeck compares the median of the last two runs with the month before, and only a fall of 15 points or more that leaves the good range (90 and up) counts. A score that's poor now (below 50) alerts on its own. Where do the speed numbers come from? Google's PageSpeed Insights, for mobile and desktop: the Lighthouse scores, loading times, and the real visitors' numbers from Chrome when Google has enough of them for the page. Where does the domain's expiry date come from? From RDAP, the domain registries' public record, looked up at most once a day. You hear at 30 days and again at 7, with the registrar to renew it with. Which pages are watched? The project's website, plus extra pages you add on its Site health tab: 2 on Starter, 5 on Pro and 10 on Agency. Each gets uptime and speed; the certificate and domain are checked on the website. ## More of what MetricDeck does * [Attention page Every client's Search Console, Analytics, Ads and website checked overnight: open alerts worst first, and each client's week against the one before. ](https://metricdeck.app/features/attention) * [Alerts Alerts when ad spend jumps, conversions stop, traffic or rankings drop, tracking breaks or a site goes down, each with its numbers and an AI explanation. ](https://metricdeck.app/features/alerts) * [AI summary A summary of each client after every sync: what needs fixing, what went well and what to do next. Code works out every number; the AI only explains them. ](https://metricdeck.app/features/ai-summary) * [Client reports Pick the sections, edit the AI summary, and send a PDF or a link with a password: Search Console, Analytics, Ads and site health in one client report. ](https://metricdeck.app/features/reports) * [Search Console reporting Clicks, impressions, CTR and position for every client, the pages and queries that lost clicks, and an alert when organic traffic drops. ](https://metricdeck.app/features/search-console) * [Google Analytics reporting Sessions and key events by channel, landing page, device and country, visits from ChatGPT and Perplexity counted apart, and alerts on drops. ](https://metricdeck.app/features/analytics) * [Google Ads wasted spend See the Google Ads search terms that spend without converting, the ones that don't match what you sell, and copy a negative keyword list. Read-only. ](https://metricdeck.app/features/google-ads) * [ChatGPT ads reporting Every client's ChatGPT ads from the OpenAI Ads API: spend, clicks, conversions, lifetime budgets running out and rejected ads, beside Google Ads. ](https://metricdeck.app/features/chatgpt-ads) * [AI search readiness Check every client's site daily for what keeps it out of ChatGPT, Claude, Perplexity and Google's AI Overviews, and hear when an AI crawler gets blocked. ](https://metricdeck.app/features/ai-search-readiness) ## Watch every client's site Add a project with its website and the first checks start at once: uptime, certificate, domain, speed and AI search readiness. Free for one site. [Start free](https://metricdeck.app/signup) [See the live demo](https://metricdeck.app/demo) Free for one client · No card · Read-only access