Six monitor types, checks from three locations, response time broken down by phase, and SSL and domain expiry warnings. One-minute checks on Pro and Scale.
HTTP, keyword, ping, TCP, heartbeat, and DNS checks, available on every plan.
Check websites and APIs for availability, status code, and response time.
Example: GET https://api.example.com/health
200 OK · 142 ms
Catch pages that return 200 OK but show the wrong content, such as an error message or a missing element.
Example: shop.example.com/product · "Add to cart"
Keyword found
ICMP ping checks for hosts that do not serve HTTP.
Example: db.example.com
18 ms · 0% packet loss
Open a connection to a port and, for common protocols, check the banner the service returns.
Example: smtp.example.com:587
Connected · 38 ms
Your cron job, worker, or backup script calls a URL when it finishes. If the call does not arrive on time, you are alerted.
Example: nightly-backup
Last ping 4 min ago
Check that a hostname resolves to the records you expect.
Example: A example.com → 203.0.113.10
Matches expected value
The check results above are examples with sample data.
Checks run from Amsterdam (EU), US West, and Singapore (Asia-Pacific). A failure at one probe is retried from the others, so a bad moment on one network path does not page you.
GET https://api.example.com/health
Every 60 s
Amsterdam
HTTP 500 · 450 ms
Failed
US West
HTTP 500 · 416 ms
Failed
Singapore
HTTP 500 · 410 ms
Failed
Incident opened
3 of 3 probes failed across 3 regions, so your team is paged.
Illustrative example with sample data
Composition of latency for uptimeio.com by connection phase (DNS, Connect, TLS, Response)
A slow response can come from DNS, the connection, the TLS handshake, or the server. Each HTTP check records all four separately.
P50, P95, and P99 response times show the slow tail that an average hides.
Email, Slack, Telegram, Pushover, and webhooks are all included on every plan, including Free.
Public API is down
Failure confirmed from 3 locations.
Sample notification
Webhook requests can be signed with HMAC-SHA256. There is no SMS or phone-call alerting.
Two common causes of avoidable outages, with alerts sent to the channels you already use.
Get warned before a certificate expires, and get an incident if it is expired or invalid.
Get warned before the domain name itself expires.
Publish the status of your monitors on a page your customers can check during an incident. Status pages are part of your account, and the Free plan includes one.
Component Status
Where checks run, who can use them, and how long we keep the results.
On Pro and Scale you can choose which locations a monitor uses, down to a single region.
Pro and Scale include team members and projects in the price, with role-based access. The Free plan is for a single owner.
Pro and Scale include 12 months of history for your monitors.
Free plan · 50 monitors · No credit card required