Free Website Uptime Monitor + SSL & Domain Alerts
Check right now whether a website is up, how fast the server answers and when its SSL certificate and domain expire. Then add your e-mail and we will watch it every 5 minutes for free – you get an alert when it goes down, when it is back, and weeks before the certificate or domain runs out.
What the monitor watches
Uptime every 5 minutes
Your home page is requested every 5 minutes. A failure is re-checked before we alert, so you don’t get false alarms.
Down & back-up alerts
One e-mail when the site goes down (with the reason: timeout, server error, DNS or SSL) and one when it is back, with the downtime.
SSL certificate expiry
Daily check of the certificate; alert 14 days before it expires, so visitors never see a security warning.
Domain expiry
Weekly RDAP lookup of the domain; alert 30 days before it expires so you never lose your domain.
Response time
How fast your server answers, with a 24-hour history on this page.
Private & free
No account, no tracking. Your e-mail is only used for alerts and you can stop monitoring with one click.
Quick answer
To check if a website is down, request it from an independent server and look at the HTTP status and response time – that is what the “Is it up?” button does. To be warned automatically, use an uptime monitor: this free one checks your site every 5 minutes and e-mails you about downtime, SSL expiry and domain expiry.
How to use it
- Enter the website address and press Is it up? for an instant check (status, speed, SSL and domain).
- To monitor it, type your e-mail and press Start free monitoring.
- Open the confirmation e-mail and click the button. Monitoring starts right away – the status and history show on this page in your browser.
Why uptime monitoring matters
Every minute your site is down you lose visitors, orders and trust – and if Google’s crawler finds it down repeatedly, rankings can drop. Hosting problems, expired SSL certificates, forgotten domain renewals, a full disk or a broken plugin update can take a site offline at night, and most owners only hear about it from a customer the next day.
What the status codes mean
| Result | Meaning | Common cause |
|---|---|---|
| 200–399 | Up | The page loads (redirects count as up). |
| 500–504 | Server error | PHP crash, database down, overloaded server, broken plugin. |
| 404 / 410 | Home page missing | Wrong document root, deleted files, bad redirect rules. |
| Timeout | No answer within 20 s | Server down, firewall blocking, DDoS or resource limits. |
| DNS | Domain doesn’t point to a server | Expired domain, wrong nameservers or deleted DNS records. |
| SSL | Certificate problem | Expired or invalid certificate, wrong domain on the certificate. |
What uptime percentage is good?
99.9% uptime allows about 43 minutes of downtime a month; 99% allows more than 7 hours. A small business site on good hosting should reach 99.9% or better. If your monitor regularly shows outages or slow responses, the cause is usually the hosting plan, too many heavy plugins or an attack – my server & hosting management and maintenance plans fix exactly that.
Tip: renew your domain for several years and turn on auto-renew, and make sure your SSL certificate renews automatically (Let’s Encrypt does this by default on most hosts). Two of the most common “site down” calls I get are simply an expired domain or certificate.
Frequently asked questions
How do I check if a website is down for everyone or just me?
Enter the address and press “Is it up?”. The check runs from our server, not your device. If it says up but you can’t open it, the problem is local: your internet, DNS cache, browser or a firewall blocking your IP.
Is this uptime monitor really free?
Yes. You can monitor up to 3 websites per e-mail address for free, with checks every 5 minutes and e-mail alerts. There is no account or credit card.
How fast will I be alerted when my site goes down?
A failed check is retried immediately; if the next 5-minute check also fails, the site is marked down and you get an e-mail – usually within 5 to 10 minutes of the outage.
Will I get warned before my SSL certificate expires?
Yes. The certificate is checked daily and you get an e-mail when fewer than 14 days are left. The domain is checked weekly and you are warned 30 days before it expires.
How do I stop monitoring?
Every alert e-mail has a “Stop monitoring” link. One click removes the website and your e-mail address from the monitor.
Want an expert to handle it?
I’m Eslam Abdullah – WordPress developer and web security specialist with 8+ years and 450+ projects. Send me your result on WhatsApp for a free consultation.