Be the first to know when your website faces downtime. Discover PerfX—the premier website monitoring solution trusted worldwide!

Track the appearance or omission of specific words or phrases.
Configure an unlimited number of monitors to check if a specific keyword is present or absent in the page's HTML code.
Your vigilant website guardian.
Can't find a stock alert for the product you want? Set up a keyword monitor and stay ahead!

Treshold notifications
You will receive alerts when the time exceeds the treshold.
Stay informed effortlessly
Configure interval and recurrence settings to ensure you're always alerted to critical outages without delay.
Scheduled Maintenance Windows
Define maintenance windows to temporarily pause monitoring activities during scheduled maintenance periods.
Root Cause Analysis for Incidents
Minimize the chance of incidents recurring through detailed root cause analysis
Monitoring and Optimizing Response Times
Visualize your response times through detailed charts to identify and address performance bottlenecks.
Custom HTTP requests
Looking to configure advanced HTTP headers? We've got everything you need!
Check SSL Errors
SSL errors can disrupt secure communication between servers and clients, leading to potential issues in website performance, data security, and user trust. Regularly checking for these errors ensures a seamless and safe browsing experience while maintaining robust encryption standards.
SSL expiry reminders
SSL certificates are vital for ensuring secure online communication, but they have expiration dates that, if overlooked, can lead to disruptions in service and security vulnerabilities. SSL expiry reminders help you stay proactive, ensuring timely renewals to maintain trust and avoid service interruptions.
Domain expiry reminders
Domains are the foundation of your online presence, and forgetting to renew them can result in website downtime, lost traffic, and potential brand damage. Domain expiry reminders help you stay ahead, ensuring timely renewal to maintain your online visibility and prevent disruptions.
Be the first who knows that your website is down. Reliable monitoring warns you before any significant troubles and saves you money.