Know what changed.
Fix it before it matters.
Continuous monitoring for websites, servers and scheduled jobs, so you catch the slow drift before your clients do.
A site issue caught early is a five-minute fix. The same issue discovered by a customer, a client, or your boss is a very different kind of afternoon.
So with SiteVitals, when something breaks, you don't just know that it broke. You know what changed just before it did, what else was affected.
Here's what feeds the timeline.
Everything SiteVitals watches.
The first person to know your site is down should be you.
Round-the-clock availability checks, every day. Double-checked to eliminate false positives, with instant alerts via email or webhook the moment something fails.
- Checks around the clock, 24/7
- Instant email & webhook alerts
- Smart verification - no false positives
- Keyword presence checks for database health
- Full incident history & recovery log
- UK & EU based - privacy-focused monitoring
We nearly watched a client's 20-year-old domain disappear. That's why this exists.
Monitors your SSL certificate, domain registration, and the external assets your site depends on. A cert that lapses or a third-party script that breaks can take your site offline just as effectively as a server failure.
- SSL chain verification & expiry alerts
- Domain expiry monitoring
- Broken asset detection (CSS, JS, images)
- Mixed content alerts
- DNSSEC & DNS record audit
Technical SEO is having a resurgence. AI search depends on it.
Automated monitoring of metadata, canonicals, schema markup, crawlability, and AI discoverability signals - including llms.txt and AI crawler access. The baseline your content needs to be found.
- Metadata, canonical & heading audit
- Block-level schema validation (JSON-LD)
- AI readiness scoring (sameAs, speakable, FAQ)
- llms.txt & AI crawler access checks
- Indexing & robots.txt integrity
- Broken internal & external link detection
- Open Graph & X Card validation
A page that used to load in 2 seconds and now takes 6 will slide in rankings.
Deep Core Web Vitals monitoring - LCP, CLS - with historical tracking so you can see exactly when performance changed and what caused it. Identifies the specific scripts and elements slowing your pages down.
- Core Web Vitals (LCP, CLS)
- Lighthouse performance scores
- Render-blocking CSS & JS detection
- Third-party script performance analysis
- Unoptimised and unsized image & layout shift forensics
- Automated regression alerts (>5 point drops)
83% of organisations experienced a breach last year. Most could have been caught earlier.
Continuous checks on security headers, cookie configuration, form protections, and third-party script integrity. Flags vulnerabilities and changes in your security posture before they become something you have to explain.
- HSTS, CSP & X-Frame-Options validation
- Cookie HttpOnly, Secure & SameSite audits
- Form CSRF & submission method checks
- Mixed content & Subresource Integrity (SRI)
- Exposed server signatures & version disclosures
- Software vulnerability matching (NVD database)
A diff engine for your live site. So a rewritten headline doesn't go unnoticed.
After every scan, SiteVitals compares your page against its previous state - body copy, title, H1, word count, and every external resource loaded. A weighted change index tells you not just that something shifted, but how significant it was.
- Weighted change index (Jaccard & Levenshtein)
- Title, H1 & heading structure change alerts
- Keyword drift & semantic similarity scoring
- External dependency fingerprinting
- Image count & page weight tracking
- Full historical change timeline
Your website can be up. Your server can still be quietly struggling.
A lightweight agent collects CPU, memory, disk, load average, and top processes every minute. When a metric is genuinely and sustainably elevated — not just a brief spike — you hear about it.
- CPU, memory, disk & load average every minute
- Sustained breach detection — no false alarms from spikes
- Service health for nginx, MySQL, Redis, PHP-FPM and others
- Crash-loop detection for repeatedly restarting services
- Agent offline detection — alerts if the server goes dark
- Process snapshot at the moment an incident opens
Failed jobs don't produce errors. They just stop working.
Each scheduled task gets a unique ping URL. When the job completes, it hits the URL. If SiteVitals doesn't hear from it within the expected window, it alerts you immediately — before a missed backup or stale report becomes someone else's problem.
- Missed job detection with configurable grace periods
- Explicit failure reporting via /fail endpoint
- Start & finish tracking to detect stuck jobs
- POST job output via /log for diagnostic context
- 30-day success rate, runtime stats & charts
- Works with bash, PHP, Python, Laravel, GitHub Actions and more
Launch your site's full
health check.
Get instant SEO & AI readiness, security, integrity, content and performance reports plus free 24/7 automated uptime monitoring.
Not a startup product.
A practitioner's tool.
Lisa and Tom have run a web agency for over two decades, working with clients who rely on their websites to do serious work without the luxury of a full-time technical team watching over them. Alongside a small, experienced team, they've seen at close quarters what happens when a site drifts, a certificate slips, or a page quietly stops doing what it should.
SiteVitals came directly out of that client work. Lisa could see that the businesses they looked after needed something that would keep a professional eye on their sites between agency visits, something that would catch the slow, quiet problems before they became the urgent, expensive ones.
No enterprise contracts. No pricing designed for teams of thirty. Just honest, continuous monitoring built by people who understand exactly what's at stake.
Most of the businesses we work with don't have someone whose job it is to watch their website. SiteVitals gives them a timeline of everything that happened — so when something goes wrong, they're not reconstructing events from memory.
Your website is running.
But is it running well?
Find out what SiteVitals can see that you cannot - and start catching problems before they catch you out.
Things people often ask us.
If something is not covered here, we are genuinely happy to answer it. We are a small team and we actually respond.
What does SiteVitals monitor that other tools don't?
Most uptime tools stop at "is it up?" SiteVitals runs continuous monitors: uptime, SEO, security, performance, integrity (SSL, domain expiry, broken assets), and content change detection. Everything feeds into a single timeline so you can correlate when something broke with what changed. You won't be reconstructing what happened from memory.
How quickly will I know if my site goes down?
Checks run as frequently as every minute depending on your plan. Alerts are sent immediately when a failure is confirmed, with full incident history so you can track response times and patterns.
Do I need to install anything on my server?
For website monitoring - uptime, SEO, security, performance, integrity, and content - no. SiteVitals works entirely from the outside, the same way your visitors and search engines see your site. No plugins, no agents, no code changes required. If you also want to monitor the server itself (CPU, memory, disk, and service health), you can optionally install a lightweight shell script with a single command. Server monitoring is available on some paid plans.
Where are your monitoring servers located?
UK and EU. Your data stays in Europe, and latency measurements reflect what European visitors actually experience.
What's the difference between free and paid plans?
Free gives you uptime monitoring for one site. Paid plans unlock SEO, security, performance, and integrity monitoring — plus faster check intervals, more sites. Alert integrations like email, Slack and webhooks are available on all plans.
Can I monitor client sites without giving them access?
Yes. Agencies use SiteVitals to monitor client portfolios from a single dashboard. You can generate shareable reports for clients without them needing an account.
