How to Monitor Website Uptime

Website uptime monitoring is one of the simplest ways to protect revenue, leads, and customer trust. The goal is to know when an important page becomes unavailable before users start telling you about it.

By Mike Mazur Published December 9, 2025 Updated June 18, 2026

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What real uptime monitoring checks — and the signals a basic ping misses.

Why monitoring website uptime matters

Most businesses depend on a small set of pages to drive results. That may be the homepage, a pricing page, a signup path, a checkout flow, or a campaign landing page. If one of those pages goes down, the impact starts immediately.

Manual checking is not enough. By the time someone notices a problem, the outage may already have cost traffic, conversions, and customer trust. A website monitoring tool closes that gap by checking key pages continuously.

How to monitor website uptime effectively

Start by choosing the pages that matter most to the business, not every page on the site. Monitor the routes tied directly to sales, signups, support, or account access.

NorthDuty monitors uptime with a real Chromium browser, not a simple HTTP ping. That means SSL validity, DNS resolution, blank-page detection, JavaScript errors, API call tracking, and performance are all captured in the same check that confirms whether the page responded. The result feeds a 0–100 health score with four weighted components: Uptime (35%), Performance (30%), Errors (20%), and Stability (15%).

On the Uptime component specifically: a healthy HTTP response contributes a full score. A navigation error deducts 25 points, an invalid SSL certificate deducts 25 points, an SSL certificate expiring within 7 days deducts 15 points, and expiry within 30 days deducts 5 points. Checks run every 1, 5, or 15 minutes per project.

Finally, make sure alerts reach the right people quickly. NorthDuty supports nine alert channels including email, Slack, Discord, Teams, Google Chat, webhooks, Telegram, WhatsApp, and SMS. Uptime monitoring works best when it leads to fast action, not just a dashboard that someone checks later.

Examples of pages to monitor first

Choose pages where downtime creates immediate business pain.

Homepage and top landing pages

These pages often drive the most traffic and shape first impressions for prospects and customers.

Login and account access pages

If users cannot log in, the support burden rises quickly and trust drops fast.

Product, pricing, and signup pages

These pages sit close to revenue and usually deserve continuous monitoring.

Checkout and payment routes

For ecommerce teams, these are some of the most expensive pages to leave unmonitored.

Best practices for website uptime monitoring

A few simple decisions make uptime monitoring much more useful.

Monitor business-critical pages before less important routes
Use checks that confirm a page is usable, not just online
Review slow pages as well as fully unavailable pages
Alert the people who can actually act on the issue
Pair uptime monitoring with website health monitoring for broader coverage
Revisit the monitored page list after launches, redesigns, and new campaigns

Conclusion

If your website drives revenue, signups, or customer access, uptime monitoring is not optional. It is the fastest way to reduce the delay between a page going down and your team finding out.

NorthDuty helps teams move beyond manual checks by monitoring important pages continuously and connecting uptime to broader website health and journey monitoring.

Related NorthDuty Pages

Keep exploring the feature pages and commercial routes connected to this topic.

Feature

Uptime Monitoring

Monitor uptime every 5 minutes by default with HTTP, SSL, DNS, blank-page detection, broken resources, JavaScript errors, and API call tracking.

Explore Uptime Monitoring

Feature

Visual Regression Monitoring

Screenshot-based visual regression testing and website change detection for key pages — get pixel diffs on design, content, and layout changes, no code required.

Explore Visual Regression Monitoring

Pricing

NorthDuty pricing for website monitoring: Free, $29 Starter, $79 Pro, $199 Business, and $499 Enterprise plans.

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Frequently Asked Questions

Short answers that summarize the practical takeaways from this guide.

What is the best way to monitor website uptime?

Use a browser-based check — not a simple ping — on the pages that matter most to the business. That way you catch not just full outages but also SSL expiry, blank pages, and JavaScript failures that a 200 response check would miss. Set alerts so the right people know immediately.

Which pages should I monitor first?

Start with the homepage, landing pages, pricing pages, product pages, login, signup, and checkout routes because they usually have the most direct business impact.

What does NorthDuty's health score include beyond uptime?

The 0–100 health score has four components: Uptime (35%), Performance including FCP, LCP, and CLS (30%), Errors including JavaScript and API failures (20%), and Stability including blank-page detection and CLS (15%).

Is uptime monitoring enough?

It is a strong starting point, but most important websites also need broader health monitoring. Pages can return 200 OK while still being blank, slow, or throwing JavaScript errors.

Call To Action

Start monitoring your website with NorthDuty today.

Use NorthDuty to monitor website uptime continuously so you can catch outages on the pages that drive traffic, sales, and customer access.