Monitor website uptime and page speed
Global monitoring network: 110+ locations
Don't wait for users to report that your website is down. Continuously check the uptime of your IPv4/IPv6-enabled websites from relevant customer locations every one minute to ensure availability for your globally distributed users. Configure intelligent thresholds and get alerted via multiple notification channels in the event of an outage. We also verify downtime from alternative locations to prevent false positives.
Analyze webpage speed using a real browser
Slow loading pages don't just frustrate users—they can also lead to page abandonment. Render your website using a real browser, and record load time for each static resource like documents, images, JavaScript, videos, and other files to identify assets that may be slowing your page down.
Global Status

Waterfall chart

Response time

Secure your website and users
Ensure service reliability and never lose the trust of your users.
Website Defacement
Immediately detect unauthorized changes to the integrity of your website. Enable an automatic baseline to uncover everything from iframe/script injections to content modification.
SSL/TLS Certificate
Easily stay up to date with SSL/TLS certificate expiration. Setting up a check not only notifies you before they expire, but also monitors for certificate revocations, untrusted CAs, and SHA-1 fingerprint tampering.
Real-time blocklist check
Periodically run queries against popular blocklists like Surbl, SORBS, Invaluement, UCEPROTECT, and more to detect domains and IP addresses marked as spam.
Brand Reputation
Keep your business and users safe. Identify infected or malicious URLs and remove them from your site by running checks against Google's list of unsafe web resources.
Domain Expiry
When a domain expires, all the services attached to it will cease to work. Set up a simple check, renew early, retain ownership, and prevent any unintended service disruption.
Blocklist check

Web Risk API check

Defacement

Eliminate blind spots with complete visibility
Gain comprehensive visibility across all the resources involved in delivering your service.
REST and SOAP APIs
Easily track the health of your app's REST API and SOAP endpoints. Add JSONPath or XPath assertions to ensure your API responses are returning the right data.
WebSocket
Monitor WebSocket endpoints to ensure real-time apps like live chat software and social media feeds on your website are working as expected.
Domain Name Server
Monitor resolution time, identify Domain Name Server (DNS) propagation issues, and verify the correctness of your domain's DNS records by performing lookups from multiple locations around the world.
Mail Delivery
Simulate an email flow end-to-end by sending and receiving test emails using your Simple Mail Transfer Protocol (SMTP), POP, and IMAP servers to measure latency and identify email deliverability issues.
File Transfer Protocol
Check upload and download performance for SSL/TLS-enabled FTP servers to make sure external file downloads are happening without any glitches.
TCP/IP Ports
Track the availability for any service that is listening on well-known ports (SMTP, POP3, IMAP, or FTP) and registered ports over the Transmission Control Protocol (TCP).
Internal Network
Complement our global monitoring network by installing a lightweight software component in your internal network to monitor resources behind the firewall.
Monitor from 3G/4G networks
Understand how your site performs when accessed on low bandwidth connections offered by your mobile network carrier.
DNS resolution time

Transaction time by location

Content check

Efficiently Communicate Incidents
Hosted status pages
High traffic days, third-party service outages, or service interruption to a hosting provider can render your website inaccessible. During times like these, proactively sending out updates regarding the status of your systems and what you are doing towards a fix can keep your customers happy. With our hosted status pages product, you can transparently communicate the real-time status of your web service and prevent unplanned downtime from affecting your bottom line

I was always very happy with the service at Site24x7.com. Notifications were easy to set up, and the reports were delivered quickly after any outages with clear explanations given. I highly recommend this tool for Website availability monitoring.
Justin Roberts
Systems/Data Analyst, Morton Michel Insurance