Uptime Monitoring Explained: Know When Your Website Goes Down

On this page

1. What uptime monitoring does
2. What to monitor
3. Common causes of downtime
4. What to do when your site goes down
5. Uptime vs other monitoring
6. Is it worth it?

If your website goes down at night or over a weekend, how long before you notice? Often it's a customer who tells you, after they've already gone to a competitor. Uptime monitoring alerts you within minutes.

What uptime monitoring does

A monitoring service checks your website at regular intervals from outside, and alerts you by email, SMS or app notification if it doesn't respond properly.

What to monitor

• Homepage availability: the basic "is it up?" check
• Key pages: contact page, top service pages, checkout for stores
• Specific content: checks that a page contains expected text, which catches "white screen" errors that still return a page
• SSL certificate expiry: before visitors see security warnings
• Domain expiry: so your domain never lapses
• Response time: sudden slowdowns often come before outages

Common causes of downtime

• Hosting outages or resource limits
• Plugin or theme updates causing errors
• Expired domains or SSL certificates
• DNS changes gone wrong
• Malware or attacks

What to do when your site goes down

1. Check whether it's down for everyone or just you
2. Check your hosting status page and account (resource limits, suspension notices)
3. If it followed an update, roll back or restore; see updating WordPress safely
4. Check domain and SSL expiry
5. Contact your host or developer with the time it started and any error messages

Full checklist: website down? what to check, step by step.

Uptime vs other monitoring

Uptime monitoring tells you the site is up; it doesn't confirm that forms deliver email or payments complete. Test those regularly too; see why contact forms fail.

Is it worth it?

Basic monitoring is inexpensive or free and takes minutes to set up. For any business that relies on its website for leads or sales, it's essential. It's included in maintenance plans alongside backups and updates.