Website Uptime Monitoring
Site Detection is a website uptime monitor that continuously checks whether your website is available. It provides straightforward website uptime monitoring so you can review uptime history, track response time, monitor SSL information, and receive an email, SMS, Slack, Teams, or Google Chat alert when downtime is detected.
You should not have to manually visit your own website throughout the day just to make sure it is still working.
Uptime history • Response-time visibility • SSL monitoring • Email, SMS, Slack, Teams & Google Chat alerts
What Is Website Uptime?
Website uptime is the percentage of time a website is available and responding during a measured period. If a website is available every time it is checked, its uptime for that period may be reported as 100%. If outages occur, the percentage decreases.
Uptime
The periods when visitors can successfully reach your website and the site responds as expected.
Downtime
The periods when your website is unavailable or fails the availability check being used by the monitoring service.
What Do Uptime Percentages Actually Mean?
A percentage such as 99.9% sounds very close to 100%, but even small differences can represent meaningful amounts of downtime. The figures below use an average month of approximately 30.44 days — see what 99.9% uptime means for a full breakdown.
| Uptime | Approx. Downtime Per Month | Approx. Downtime Per Year |
|---|---|---|
| 99% | About 7 hours 18 minutes | About 3 days 15 hours 36 minutes |
| 99.5% | About 3 hours 39 minutes | About 1 day 19 hours 48 minutes |
| 99.9% | About 43 minutes 50 seconds | About 8 hours 46 minutes |
| 99.95% | About 21 minutes 55 seconds | About 4 hours 23 minutes |
| 99.99% | About 4 minutes 23 seconds | About 52 minutes 34 seconds |
These are mathematical approximations. Actual monitored uptime depends on the monitoring period, check frequency, and how a monitoring service defines an outage.
Why Monitor Website Uptime?
Your website may be available when you check it in the morning and unavailable ten minutes later. Manual checks cannot provide continuous visibility.
Continuous Visibility
Website uptime monitoring keeps watch while you are working, sleeping, away from the office, or focused on your business.
Know About Outages
When downtime is detected, Site Detection sends an email alert so you have the opportunity to investigate sooner.
Review Availability History
Historical uptime information helps you see whether an incident was isolated or part of a larger availability pattern.
Checking Your Website Manually Is Not Uptime Monitoring
Opening your website once or twice a day only tells you that the site worked at those particular moments. It says nothing about the hours between your checks.
Manual Website Checks
- You have to remember to check
- You only see the website at that moment
- Overnight outages may go unnoticed
- Short outages can easily be missed
- There may be no historical uptime record
Website Uptime Monitoring
- Checks happen automatically
- Monitoring continues around the clock
- Downtime can be recorded as an incident
- You can review availability over time
- Site Detection emails you when downtime is detected
Uptime Monitoring vs. Downtime Monitoring
These terms are closely related, but they emphasize different sides of the same availability question.
Website Uptime Monitoring
Focuses on tracking whether the website remains available over time and measuring the percentage of successful availability.
Website Downtime Monitoring
Focuses on identifying and recording periods when the website becomes unavailable so you can respond to the problem.
Site Detection supports both sides of that need: visibility into uptime and website downtime monitoring when availability problems occur.
How Site Detection Website Uptime Monitoring Works
Site Detection is designed to give businesses uptime visibility without requiring a complicated monitoring deployment.
Add Your Website
Enter the public website you want Site Detection to monitor.
Monitoring Begins
Site Detection checks your website automatically from outside your hosting environment.
Availability Is Tracked
Website uptime, response information and detected incidents become part of your monitoring history.
Alerts When Downtime Is Detected
If your website becomes unavailable, Site Detection sends an email alert so you can investigate.
More Than an Uptime Percentage
Uptime is important, but understanding website availability is more useful when you can see related information too.
Availability
See whether your website is available when Site Detection performs its checks.
Response Time
Track how quickly your website responds and see changes that may be worth investigating.
SSL Monitoring
Keep visibility into SSL certificate monitoring so certificate-related issues do not catch you by surprise.
Incident History
Review detected availability incidents instead of relying on memory or customer reports.
Downtime Alerts
Get an email, SMS, Slack, Teams, or Google Chat alert when Site Detection detects that your monitored website is unavailable.
Public Status Pages
Eligible plans can provide a public status page for communicating website or service availability.
Your Hosting Company's Uptime Is Not Necessarily Your Website's Uptime
A hosting provider may report that its infrastructure is operating normally while your particular website has a problem.
Application Failures
A website application, WordPress plugin, database, or configuration can fail while the physical server remains online.
DNS or SSL Issues
Visitors can have trouble reaching or securely using a website because of DNS or certificate-related problems.
Website-Specific Problems
Your host can be functioning normally while a change or failure affects only your site.
Site Detection checks the website externally, giving you another layer of visibility into whether visitors can reach it.
Who Benefits From Website Uptime Monitoring?
Any organization that depends on its website can benefit from knowing whether the site is available.
Small Businesses
A short outage can mean missed phone calls, contact requests, appointments, estimates, or sales.
E-commerce Businesses
When the website is unavailable, customers may be unable to browse products or complete purchases.
Professional Services
Prospective clients may be researching your firm or trying to contact you when an outage occurs.
Medical & Dental Practices
Patients may depend on the website for contact information, office details, or appointment requests.
Agencies & Consultants
Monitoring provides additional visibility into business-critical websites you are responsible for supporting.
Any Business With a Website
If your website helps customers find, evaluate, or contact you, uptime matters.
What Can Affect Website Uptime?
A website can become unavailable for reasons ranging from infrastructure failures to a routine change that went wrong.
Hosting & Server Problems
Hosting outages, overloaded servers, networking problems, and server failures can affect availability.
Software & Configuration
Failed updates, application errors, plugin failures, database problems, or configuration changes can cause outages.
DNS, SSL & Security
DNS failures, certificate issues, or security incidents can prevent visitors from successfully reaching your website.
If you are looking for the broader service overview, visit our website monitoring service page.
Stop Guessing About Your Website's Uptime
Site Detection monitors your website around the clock, gives you visibility into availability, and alerts you by email, SMS, Slack, Teams or Google Chat when downtime is detected.
Start Monitoring Your Website Run a free site checkFrequently Asked Questions About Website Uptime Monitoring
What is website uptime monitoring?
Website uptime monitoring automatically checks whether a website remains available over time. Site Detection tracks website availability and sends an email, SMS, Slack, Teams, or Google Chat alert when downtime is detected.
What does 99.9% uptime mean?
99.9% uptime means a website was available for 99.9% of the measured period. Using an average month of approximately 30.44 days, that corresponds to roughly 43 minutes and 50 seconds of downtime per month.
Is 100% uptime possible?
A website can achieve 100% uptime during a particular monitoring period, but no hosting or monitoring service can guarantee that every website will remain continuously available forever. Infrastructure failures, software problems, DNS issues, certificate problems, network events, updates, and other failures can occur.
What is the difference between uptime monitoring and downtime monitoring?
Uptime monitoring focuses on measuring how consistently a website remains available. Downtime monitoring focuses on identifying periods when the website becomes unavailable. They are closely related parts of website availability monitoring.
How does Site Detection notify me if my website goes down?
Site Detection currently sends downtime notifications by email when it detects that your monitored website is unavailable.
Does Site Detection send SMS or text alerts?
Yes. Site Detection provides downtime alerts by email, SMS text, Slack, Microsoft Teams, and Google Chat.
Do I need to install software or a plugin?
No. Site Detection monitors websites externally, so you do not need to install a monitoring agent or plugin on the website.
Why should I monitor uptime if my hosting provider already does?
Hosting-provider infrastructure monitoring is not always the same as independently checking whether visitors can successfully reach your particular website. A website-specific application, database, DNS, SSL, or configuration problem can affect your site even while the host's broader infrastructure is operating.
Does website uptime affect customers?
Yes. If your website is unavailable, customers may be unable to find information, submit forms, make purchases, request appointments, or contact your business. Some visitors may simply leave without reporting the problem.
Can Site Detection monitor WordPress websites?
Yes. Site Detection monitors websites externally, so WordPress websites can be monitored without installing a Site Detection monitoring plugin.
Does uptime monitoring prevent website outages?
No. Uptime monitoring does not prevent every outage. Its value is visibility: it helps you know when availability changes so you can investigate and respond.
Why monitor website response time too?
Uptime tells you whether the website is available, while response-time information helps you see how quickly the site responds. A website can technically be online while still responding more slowly than usual.
Know Whether Your Website Is Available
Let Site Detection keep watch around the clock so you have a clearer picture of your website's uptime and an email alert when downtime is detected.
Start Monitoring Your Website