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1Scan for outdated or missing drivers - takes under a minute2Clear out junk files and repair common Windows errors3Fix the driver behind crashes, sound loss and screen glitchesMonitor website health by running recurring checks against meaningful URLs or endpoints, validating the response you expect, and alerting someone when repeated checks fail. For critical customer journeys, add a browser-based synthetic test: a basic uptime check can confirm that a server returned an acceptable response, but it cannot establish that the page rendered correctly or that its JavaScript interactions work.
What an automated website health check can tell you
A health check is only as useful as its target and pass criteria. A request to your homepage can show that it is reachable; a request to a health endpoint can report whether selected backend dependencies are available. Neither automatically proves that a visitor can complete a purchase or use a form.
Google Cloud Monitoring supports public HTTP, HTTPS, and TCP uptime checks. For HTTP and HTTPS checks, it follows redirects and evaluates the final response against the success criteria you configure. Its basic HTTP check expects a 2xx status by default, and response text is not validated unless you configure a content condition. Google Cloud uptime-check documentation
A basic uptime check does not load page assets or run JavaScript. It can therefore pass while a stylesheet, image, client-side application, or interactive flow is broken. Use it for reachability and response validation, not as proof that the entire website works.
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Choose the right endpoint and pass criteria
Pick a URL that represents the service
- Homepage: a useful first signal for general public reachability, but not necessarily a meaningful test of the service behind it.
- Health endpoint: a path designed to report whether the application is healthy. Decide which dependencies it should include; a shallow endpoint may remain green even if a key feature is unavailable.
- Important page or API route: choose a path associated with a customer or operational need, and confirm that it can be checked safely and repeatedly.
Match the protocol to the failure you care about
Use HTTP or HTTPS when you need to validate a web response, including its status and optionally its content. Use TCP when the question is whether a particular network service accepts connections. A TCP connection alone does not validate an HTTP response or page content.
Set explicit success conditions
Choose an expected status range and, where appropriate, require a distinctive response string or require that an error string be absent. Content checks help catch cases where a server returns a success status but serves an error page or incomplete response. Avoid matching text that changes frequently or appears on unrelated pages. Google documents response-content matching as an optional uptime-check condition. Google Cloud uptime-check documentation
Set up a recurring check and alert
Google Cloud’s documented workflow is one option for teams already using Google Cloud. Uptime checks are configured in a Google Cloud project, and public checks can run from multiple locations. A global region selection uses all uptime-check regions, according to Google’s documentation. Uptime checks
- Select the project and create the check. In Google Cloud Monitoring, create an uptime check for the public URL or supported resource you intend to monitor. Set the protocol, hostname, path, and request configuration appropriate to that endpoint.
- Configure validation. Set the acceptable response status and any response-content conditions. For HTTP and HTTPS, account for redirects: the documented check evaluates the final response.
- Select locations. Choose probe locations relevant to your users and service. Multiple locations can help distinguish a localized problem from a broader failure; use the global selection if checks from all documented uptime-check regions are appropriate.
- Test the configuration. Run the configuration test and inspect its results before relying on it. Confirm that the configured URL, status expectations, and content condition behave as intended.
- Create an alerting policy. A check does not by itself ensure that anyone is notified. Set an alerting policy for failed uptime checks, choose its failure behavior and notification routing, and verify that the right person or team receives the alert.
- Connect notification channels. Google documents email, Slack, PagerDuty, and Pub/Sub among its notification channels. Choose the channel your on-call process actually monitors. Google Cloud uptime-check quickstart
- Review results after deployment. Confirm that successful checks appear as expected and that a deliberately invalid test configuration produces a failure signal through the intended alert path. Do not disrupt production to test alerting.
Add synthetic tests for browser behavior
When the failure mode involves rendering, JavaScript, or a sequence of user actions, use a synthetic monitor that simulates more of the journey than a plain request. Google Cloud distinguishes uptime checks from custom and Mocha-based synthetic monitors, and also documents broken-link checking as a separate approach. Synthetic monitors periodically run simulated requests and record success and latency. Google Cloud synthetic monitors
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Choose a test whose steps reflect a high-value journey: for example, opening a sign-in page and confirming a key element appears, or exercising a safe test transaction in a non-production environment. Keep the test account and test data controlled, and avoid actions that create real orders, send unwanted messages, or change customer data.
Browser tests have more moving parts than endpoint checks: selectors can change, third-party services can be intermittent, and authentication or test data can expire. Keep assertions focused on meaningful outcomes and make failures actionable. A browser test supplements basic uptime monitoring; it does not replace checks for service reachability.
Choose monitoring coverage that fits the risk
| Decision | What to consider |
|---|---|
| Check coverage | HTTP/HTTPS or TCP reachability, response content, SSL or DNS status, broken links, and scripted workflows cover different failure modes. Google documents HTTP/HTTPS/TCP uptime checks and separate synthetic-monitoring approaches. Uptime checks; Synthetic monitors |
| Probe geography | Use locations relevant to the audience and determine whether the service lets you identify a regional probe failure separately from a wider outage. Google Cloud supports public checks from multiple locations. Uptime checks |
| Validation depth | Status-only checks are simpler; response-text conditions catch some misleading success responses; browser scripts can validate selected interactions. These methods establish different levels of confidence, not interchangeable guarantees. Uptime checks; Synthetic monitors |
| Alert delivery | Check supported channels, alert thresholds and durations, routing, and who owns response. Google documents email, Slack, PagerDuty, and Pub/Sub notification channels. Quickstart |
| Operating fit | Google Cloud checks require a Google Cloud project. Hosted monitoring services may provide a separate dashboard and alerting workflow; verify current features and terms with each provider. Google Cloud uptime checks |
For examples of hosted services, Montastic advertises HTTP/HTTPS, ping, and port checks, multi-location checks, alerts, status pages, and SSL/DNS monitoring. Montastic Oh Dear advertises uptime, SSL, DNS, cron, broken-link, performance, and status-page monitoring. Oh Dear These are providers’ own descriptions, not independent performance comparisons; check their current capabilities and pricing before choosing.
Use ScreenshotNeo when the check needs a screenshot
For visual checks or a screenshot returned to a workflow, ScreenshotNeo is a website screenshot API and MCP server for developers. Its screenshot endpoint captures a URL as PNG, JPEG, WebP, or PDF. It is not a replacement for recurring uptime checks and alert policies; use it when you need a captured page or want an AI agent to request one.
Or skip the browser setup:
Send one GET request with a URL. The example below saves a WebP screenshot; see the ScreenshotNeo API documentation for options and response details.
curl -G "https://api.screenshotneo.com/v1/shot" -d access_key=YOUR_API_KEY --data-urlencode url=https://stripe.com -o shot.webpScreenshotNeo accepts cookie or consent banners like a visitor and removes more than 60 known consent platforms, newsletter popups, and chat widgets before capture; each step can be turned off. Bot checks or CAPTCHAs, blank pages, timeouts, failed loads, and cache hits are not billed, and responses identify the page verdict and billing status in headers. An MCP server provides take_screenshot, get_page_info, and capture_pdf tools for Claude, Cursor, and other MCP clients. The free plan includes 1,000 screenshots per month with no card; paid plans start at $5 for 3,000 shots.
Sign up for ScreenshotNeo’s free plan to get 1,000 screenshots a month with no card.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Troubleshoot common monitoring failures
The check passes, but visitors report a broken page
A basic check may only verify the response and does not load assets or execute JavaScript. Add a synthetic browser test for the affected page or journey, and investigate asset delivery and client-side errors separately. Google Cloud uptime-check behavior
The endpoint returns success while the application is unhealthy
Review what the health endpoint actually tests. If it checks only that the web server is responsive, it may not cover a database, authentication service, or other dependency required by the feature. Adjust the endpoint or add a check for the affected route and a synthetic test for the user-visible behavior.
The check fails after a redirect
HTTP and HTTPS uptime checks evaluate the final response after following redirects. Inspect the redirect destination and ensure the configured success criteria match the final page rather than assuming the initial response determines the result. Google Cloud uptime-check documentation
The check reports content mismatch
Confirm that the required text is present in the actual response body and is stable across normal deployments or localization. Remove overly specific or transient text conditions, or select a more reliable marker. If the check is meant to reject an error phrase, make sure the phrase is not legitimately present on the page.
No one receives an alert
Verify that an alerting policy exists for the check, that it is configured to notify on the failure condition you expect, and that the notification channel is connected and monitored. Google recommends an alerting policy for failed uptime checks. Google Cloud quickstart
Only one location reports a failure
Compare the probe results before treating a single location’s failure as a global outage. A regional failure can still matter to users in that region; use the results to guide investigation rather than suppressing the alert without review.
Keep checks useful and operationally safe
- Monitor endpoints that represent user or business impact, rather than adding checks with no clear owner.
- Use a dedicated health route where possible, and decide deliberately whether it should include dependency checks.
- Use response-content matching sparingly so small copy changes do not generate avoidable alerts.
- Make sure alert routing names an owner and supports the team’s response process.
- Use safe test accounts and non-production environments for synthetic actions that could change data or trigger real-world effects.
- Review check results and alert behavior after application, routing, authentication, or monitoring-configuration changes.
Cloud monitoring and hosted services can differ in setup, capabilities, alerting, and price. The available provider descriptions do not establish a neutral price ranking or an independently tested performance winner, so compare the current terms and coverage against the failure modes you need to catch.
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