30-second checks from 10+ global locations. Alerts in under a minute via SMS, Slack, PagerDuty, and 13 more channels. Free for up to 50 monitors.
Fastest check interval
Global check locations
Alert channels
Free monitors included
Free instant check: response time, SSL validity, DNS health, and HTTP status. No account needed.
Click a category to see what it checks and how results look in practice.
Track uptime and response times for any HTTP or HTTPS endpoint. Checks run as often as every 30 seconds from 10+ locations worldwide, so regional outages and CDN failures never go unnoticed.
No credit card. No sales call. Just monitoring.
One click with Google or GitHub, or use email. Takes under 10 seconds.
Paste URLs manually or let our wizard auto-discover pages from your sitemap. Bulk import supported.
Connect Slack, SMS, email, PagerDuty, or all of them. Set escalation rules and failure thresholds.
Checks start immediately. You only hear from us when something needs your attention.
Sixteen channels. Escalation rules. Consecutive-failure thresholds to kill false alarms. The right person knows at the right time.
+ OpsGenie · VictorOps · Splunk On-Call · Google Chat · Zapier · Pushover · Custom API · View all integrations
The real cost of outages
Every minute offline costs you customers, search rankings, and brand trust. Industry research puts the average cost of IT downtime at over $5,600 per minute, and that's before you count the visitors who silently leave and never come back. Use our SLA downtime calculator to see exactly how much outages cost your business.
Google's crawlers treat repeated 5xx errors and slow responses as signals of an unreliable site. Extended outages can cause pages to drop from the index entirely, wiping out months of SEO crawlability work. SSL certificate lapses trigger browser security warnings that crater conversion rates overnight.
Professional monitoring closes the gap between "something broke" and "we're already fixing it." With 30-second checks from multiple global locations, Pulse Stack™ catches problems in seconds, not hours.
Global coverage
A CDN edge node in Frankfurt goes down. Your monitoring server in Virginia says everything's fine. Meanwhile, half your European traffic sees a 502 error. This is the blind spot of single-location monitoring. Learn more about our global monitoring network.
🇺🇸 New York
12ms
🇬🇧 London
18ms
🇩🇪 Frankfurt
14ms
🇸🇬 Singapore
45ms
🇧🇷 São Paulo
62ms
🇯🇵 Tokyo
38ms
🇦🇺 Sydney
55ms
🇮🇳 Mumbai
42ms
🇨🇦 Toronto
16ms
🇳🇱 Amsterdam
15ms
The result: fewer missed outages, fewer unnecessary 3 a.m. pages, and a true global picture of your infrastructure's health. If one region reports a failure but others don't, we flag it as a regional issue, reducing false alarms while still surfacing localised problems that affect real users. Pair multi-location checks with ping monitoring and DNS health checks for full coverage.
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Collaboration
Monitoring is a team sport. Pulse Stack™ includes role-based access, shared dashboards, on-call rotation support, and built-in incident management, so your entire engineering organisation can collaborate on uptime.
Public status pages update automatically when incidents are detected and resolved. Branded, customisable, and free on all plans with no separate product required.
50 monitors free forever. Upgrade when you need faster checks or more capacity.
Most popular
£29/month
All plans include multi-location checks, incident management, and public status pages. Full plan comparison →
Website monitoring is just the start. Combine with these tools for complete infrastructure visibility.
Everything you need to know about website monitoring.
Website monitoring is the practice of continuously checking your website's availability, performance, and correct functioning from multiple locations around the world. You need it because even a few minutes of downtime can cost you customers, revenue, and search engine rankings. Studies show that 88% of online consumers are less likely to return to a site after a bad experience, and Google factors site reliability into search rankings.
Join thousands of teams who catch outages before anyone notices. Free for up to 50 monitors. No credit card required.
Start monitoring free