ismysiteup Web Monitor
Tips, guides, and best practices for website monitoring
How to Check When an SSL Certificate Expires (3 Easy Ways)
How to check when an SSL certificate expires in any browser, with one openssl command, or with a free online checker, plus how to get warned before it does.
Website Not Working in Other Countries? Here's Why (and How to Check)
Your site loads for you but not for visitors abroad? Here's why a website is not working in other countries, and how to check it from different locations.
Website Down for Maintenance? How to Tell (and Do It Right)
Is a website down for maintenance, actually broken, or only down for you? Here's how to tell in under a minute, plus how to serve a proper 503 maintenance page with Retry-After on nginx, Apache, and WordPress.
How to Detect Silent Failures: Website Up but Orders Stopped
Your site returns 200 OK, yet no orders have come in for hours. Here's how to detect silent failures by watching a JSON API value and getting an alert when orders, signups, or payments stop.
How to Monitor Domain Expiration and Never Lose Your Domain
Auto-renew can fail without warning. Here's how to monitor domain expiration, check your real expiry date, and get an alert long before your site and email go dark.
How to Monitor Client Websites: A Guide for Agencies
The worst way to learn a client's site is down is from the client. Here's how to monitor client websites at scale: what to check, how to organize it, and who gets the alert.
How to Get Telegram Alerts When Your Website Goes Down
Stop missing downtime emails. Here's how to get a Telegram message the moment your site goes down, using a free bot and about ten minutes of setup.
UptimeRobot Alternative With WhatsApp & Telegram Alerts
Want downtime alerts on WhatsApp or Telegram without upgrading? We compare ismysiteup and UptimeRobot plan by plan, and are honest about where each one fits best.
How to Get Website Down Alerts on WhatsApp (Free)
Email alerts are easy to miss. Here's how to get a WhatsApp message the moment your site goes down, for free, in about five minutes.
Freshping Alternative: Where to Move After the Shutdown
Freshworks has retired Freshping. Here's what the shutdown means for your monitors and data, and how to choose a replacement without losing coverage.
Is My Website Down? How to Check (and What to Do Next)
Can't load your site? Here's how to find out in seconds whether it's down for everyone or just you, and exactly what to do next in either case.
What is Website Uptime Monitoring? A Complete Guide
Website uptime monitoring tracks whether your site is accessible to visitors 24/7. This guide explains how it works, why it matters, and how to set it up in minutes.
Monitor your websites for free
Get instant email, Telegram, and WhatsApp alerts when your sites go down. Check every 5 seconds. No credit card required.
Start Monitoring Free