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Website Monitoring Guide

By CloudPicked Review Team•Updated 14 June 2026•5 min read
Website Monitoring Guide

Contents

  1. What is Website Monitoring
  2. Monitor
  3. Website Monitoring
  4. Website Monitoring
  5. Overview
  6. Overview
  7. Metric Monitor
  8. Setup: UptimeRobot
  9. Advanced Monitoring

What is Website Monitoring

Website Monitoring automatically and continuously checks your website status — whether it's online, response speed, and error detection. It sends requests at defined intervals (e.g., every 1-5 minutes) and instantly alerts you when issues are found.

Monitor

Unknown website downtime is serious — an hour of e-commerce downtime loses all that period's revenue; a company site going down means unreachable customers. Website Monitoring ensures immediate problem awareness for fastest resolution, genuinely reducing downtime.

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Website Monitoring

Website Monitoring types: Uptime Monitoring (HTTP/HTTPS check), Performance Monitoring (response time), SSL Monitoring, DNS Monitoring, Port Monitoring (TCP), and Keyword Monitoring (checking for specific keywords on the page).

Website Monitoring

Popular tools: UptimeRobot (free 50 monitors), Freshping (free 50 monitors), Better Uptime (free 10 monitors), StatusCake (free), Pingdom (paid), and Grafana Cloud + Uptime Kuma (self-hosted free).

Overview

UptimeRobot is the best free option for beginners: 50 free monitors every 5 minutes, free email alerts. Freshping offers 50 monitors checking every 1 minute. For those with their own server, Uptime Kuma is free with unlimited monitors.

Overview

Good alerts reach the right person immediately. Recommended channels: Email (standard), SMS (urgent), Telegram Bot (free), Slack (team), LINE Notify (Thailand), PagerDuty (enterprise). Use multiple channels to ensure alert delivery even if one channel fails.

Metric Monitor

Beyond uptime, monitor: Response Time (target < 2s), SSL Expiry (alert 30 days before), HTTP Status Code (200 = OK), DNS Resolution Time, TTFB (Time to First Byte), and Core Web Vitals through RUM (Real User Monitoring).

Setup: UptimeRobot

1. Sign up free at UptimeRobot.com 2. Add new monitor → HTTP(s) 3. Enter site URL 4. Set interval to 5 minutes 5. Configure email alert contact 6. Save 7. Wait 5 minutes — monitoring begins with alerts on downtime.

Advanced Monitoring

Advanced monitoring includes multi-location checks (from multiple countries), RUM (Real User Monitoring), Synthetic Transaction Monitoring (simulating user flows), API Monitoring, and Server Resource Monitoring (CPU/RAM/Disk) through agents.

Frequently Asked Questions (FAQ)

Can I get alerts via LINE when my site goes down?
Yes, via LINE Notify. UptimeRobot Pro supports webhooks that can connect to LINE Notify, or you can use Freshping + Zapier + LINE Notify. For self-hosted Uptime Kuma, LINE Notify is supported built-in for free.
If my site is down for 5 minutes, will the monitor know immediately?
It depends on the monitor's interval. Free UptimeRobot checks every 5 minutes, so if it goes down right after a check, you may learn of it up to 5 minutes late. Free Freshping checks every 1 minute, which is faster. UptimeRobot Pro also checks every 1 minute.
With a 99.9% Uptime SLA, how long can the site be down?
99.9% uptime = a maximum of 8.7 hours of downtime per year, or 43 minutes per month. 99.99% = 53 minutes per year, or 4.4 minutes per month. Premium hosts often guarantee 99.9% or 99.99%.
What can you get from free website monitoring?
UptimeRobot free: 50 monitors, every 5 minutes, email alerts. Freshping free: 50 monitors, every 1 minute, email alerts. StatusCake free: uptime + SSL monitoring. Self-hosted Uptime Kuma: free and unlimited, but you need a server to install it on.