# Testomato > Testomato is an automated website monitoring service that tracks uptime, SSL certificates, errors, response times, and content changes. It checks websites every 15 seconds from 9 global locations and sends instant alerts via email, Slack, PagerDuty, and Pushbullet. Pricing starts at $15/month with a 14-day free trial. No credit card required. ## Core Features - [Uptime Monitoring](https://testomato.com/uptime-monitoring/): 15-second interval checks from 9 worldwide locations with multi-location verification to eliminate false positives. - [SSL Monitoring](https://testomato.com/ssl-monitoring/): Automated SSL certificate expiration alerts and TLS error detection including domain mismatches, weak ciphers, and missing certificate chains. - [Error Monitoring](https://testomato.com/error-monitoring/): Detects HTTP errors, broken redirects, missing content, and form failures across monitored URLs. - [Response Time Monitoring](https://testomato.com/response-time-monitoring/): Tracks page load speed and alerts on performance degradation. - [Meta Tags Monitoring](https://testomato.com/meta-tags-monitoring/): Monitors title tags, meta descriptions, and canonical URLs for SEO-critical changes. - [Website Monitoring](https://testomato.com/website-monitoring/): Checks text presence, HTML elements, HTTP headers, XPath, and regex patterns every minute. - [Instant Alerts](https://testomato.com/instant-alerts/): Sends notifications via email, Slack, PagerDuty, Pushover, and Pushbullet the moment an issue is detected. - [Status Pages](https://testomato.com/status-page/): Public status pages with live status, 90-day uptime history, active incidents, scheduled maintenance, and email subscriptions — updated automatically from monitoring. - [FAQ](https://testomato.com/faq/): Frequently asked questions about features, pricing, check frequencies, and integrations. ## Use Cases - [For SEO Professionals](https://testomato.com/for-seo/): Monitor title tags, meta descriptions, canonical URLs, and uptime to protect search rankings. - [For Developers](https://testomato.com/for-developers/): API access, webhook alerts, and programmatic monitoring for development and staging environments. - [For DevOps](https://testomato.com/for-devops/): Uptime and performance monitoring with integrations into PagerDuty, Slack, and CI/CD workflows. - [For Marketers](https://testomato.com/for-marketers/): Website availability and content monitoring to ensure campaigns and landing pages stay live. - [For Business Owners](https://testomato.com/for-business-owners/): Simple uptime and error monitoring with instant alerts — no technical knowledge required. ## Tools - [SSL Checker](https://testomato.com/tools/ssl-checker/): Free tool to check any domain's SSL certificate status instantly. - [DNS Checker](https://testomato.com/tools/dns-checker/): Free tool to verify DNS propagation across global locations. ## Pricing - [Pricing](https://testomato.com/pricing/): Four tiers from $15 to $229/month covering 1 to unlimited domains. All plans include a 14-day free trial. - [Compare Competitors](https://testomato.com/testomato-compare/): Feature and pricing comparisons against alternative monitoring services. ## Blog & Guides - [Guide to Response Time Monitoring](https://testomato.com/blog/response-time-monitoring/): Generic speed advice won't fix your site. Learn how response time monitoring with Testomato gives you the data to find your real bottleneck. - [How to Monitor Your Meta Tags](https://testomato.com/blog/meta-tags-monitoring/): Meta tags do more than feed SEO. Learn how title, description, Open Graph, robots, canonical, and hreflang tags break, and how to monitor them on live pages. - [Set Up Website Monitoring with AI in 60 Seconds](https://testomato.com/blog/ai-website-monitoring-setup/): Enter a URL and Testomato's AI wizard suggests pre-verified monitoring checks for your most important pages in under a minute. - [Schema Markup Validation Is Not Enough: Monitoring JSON-LD](https://testomato.com/blog/json-ld-monitoring/): Schema validators only check syntax on demand. A plugin update or CMS change can silently wipe your JSON-LD. Learn how to monitor structured data on live pages. - [How to Monitor Your Content-Security-Policy](https://testomato.com/blog/content-security-policy-monitoring/): How to monitor your Content-Security-Policy response header, use report-only mode, and what we found when we checked our own CSP. - [What is Website Monitoring? How It Goes Beyond Uptime](https://testomato.com/blog/what-is-website-monitoring/): Website monitoring goes beyond checking if your server is online — it verifies that your pages load, forms work, and content is present and correct. - [HTTP Status Codes: The Complete Guide for Website Monitoring](https://testomato.com/blog/http-status-codes/): A complete reference guide to HTTP status codes — what they mean, when they appear, and why monitoring them matters for any website owner. - [What is Uptime Monitoring?](https://testomato.com/blog/what-is-uptime-monitoring/): Uptime monitoring is an automated system that checks your URLs 24/7 and alerts you the moment something goes down. Learn how it works, what downtime costs, and how to configure alerting that actually helps. - [We Rebuilt the Testomato Website](https://testomato.com/blog/website-redesign-2026/): We rebuilt the Testomato public website as a standalone static site with Astro. Faster load times, refreshed design, and more content for different audiences. - [Testomato Introduces SSL Certificate Monitoring](https://testomato.com/blog/ssl-certificate-monitoring/): Testomato now offers SSL certificate monitoring for HTTPS websites — so you can always know when it's about to expire. - [Switching from Bootstrap to Tailwind](https://testomato.com/blog/switching-from-bootstrap-to-tailwind/): We're switching from Bootstrap to Tailwind and want to share some thoughts about our journey. - [How to Automatically Monitor a WordPress Website Using Testomato](https://testomato.com/blog/monitor-wordpress-website/): Learn how to monitor a website developed using the popular content management system WordPress. - [Testomato's New Slack App Simplifies Notification Settings](https://testomato.com/blog/slack-app-notification-settings/): Testomato's new Slack App simplifies connecting Testomato to Slack and replaces the older webhooks solution. - [Server-Side Caching: Speed Up Your WordPress Website](https://testomato.com/blog/server-side-caching-wordpress/): Learn how to use server-side caching to dramatically improve your WordPress website performance. - [6 Important Qualities of Clean Code](https://testomato.com/blog/qualities-of-clean-code/): How do you know that someone doesn't look at your code and call it "spaghetti code"? Learn the 6 principles of clean code. - [How to Write a Manual Test Case for a Login Form](https://testomato.com/blog/manual-test-case-login-form/): Learn the basics of writing a test case and how to manually test a login form with this beginner tutorial. ## Optional - [API Docs](https://help.testomato.com/api/testomato-api): REST API for programmatic access to monitoring data and configuration. - [Help Center](https://help.testomato.com/): Documentation and guides for setting up and using Testomato. - [Testomatobot](https://testomato.com/bot/): Information about Testomato's web crawler used for monitoring checks. - [About](https://testomato.com/about/): Company background and mission. - [Team](https://testomato.com/team/): The people behind Testomato. - [Monitoring Locations](https://testomato.com/monitoring-locations/): The 9 global server locations used for uptime checks.