Watchdog
Experience the unique “Monitor” that automatically tracks your websites. Sleep soundly knowing they run smoothly.

A fast website boosts conversions.
Our tool gets you there.
Don't worry. PageSpeed.cz PLUS monitors the performance of your websites and advises you on how to improve them. Without having to install anything.
5,400 CZK per year for website, three-month money-back guarantee. See features, sample project or book a demo.
Experience the unique “Monitor” that automatically tracks your websites. Sleep soundly knowing they run smoothly.
Rely on our tests. The combination of Lighthouse and our testing infrastructure gives you reliable data.
Has your speed deteriorated? You can find out the cause in graphs or detailed technical reports. We'll show you opportunities for improvement.
We built Monitoring PLUS on years of experience with performance optimization for dozens of clients.
“The tool works great for us. We check it every day because of INP. We have Watchdog notifications set up in Slack, and it just recently alerted us to a bug.”
Jaroslav Hanslik, Slevomat
“We use the tool to monitor the performance of all domains. At the same time, we can see how our competitors are doing, which motivates us not to rest on our laurels.”
Peter Varga, Dr. Max
“We appreciate the ability to check data on a daily basis and receive email notifications in PageSpeed.cz PLUS. It has proven to be effective for us to mark changes in the tool and monitor their impact.”
Eduard Beneš, PragueBest
“A valuable tool for monitoring and optimizing the performance of websites and e-shops. We deploy it automatically from the very beginning of our cooperation. Our clients and their developers also appreciate it.”
Jaroslav Vasut, Effectix
Take a look behind the scenes at Core Web Vitals. Technical reports and advice show you where you have opportunities to improve speed.
You'll receive a monthly report on your website performance. And if something goes wrong, we'll get back to you right away.
We know you operate in a competitive environment, so we show you metrics not only for your websites, but also for your competitors.
We created the PLUS plan based on many years of experience with website optimization and monitoring.
PLUS plan | Free | |
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Data historyFor professional website performance monitoring, we recommend the PLUS plan, where you will see a year of data history. We only offer three months of free testing. | 12 months | 3 months |
TestingTest results from Google's PageSpeed Insights API in free tests are unstable. In the PLUS plan, we test on our own stable infrastructure. | stable | unstable |
Number of URLs and domainsIn free tests, you can only track data from three URLs and domains. In PLUS tests, you can track five and more for an additional fee. | 5+ | 3 |
Test frequencyFor unpaid tests, we collect data every two days. For PLUS, we test each URL five times every day for both mobile and desktop. | 10 times a day | 1× every two days |
“Opportunities” ReportThe Opportunities report shows you performance improvement opportunities for your tracked URLs. Lighthouse provides recommendations to help you identify what to improve on your site. | all URLs | 1 URL |
“Technical” ReportThe “Technical” report shows the current status and development of technical indicators at the level of individual URLs. It makes it easier to find the cause of speed issues. | - | |
WatchdogWatchdog's is the most popular feature of PLUS Monitoring. It automatically checks URL performance and reports any problems. | - | |
Notice of changesYou can set up Watchdog notifications to your email, Slack, or Teams, so they reach you wherever you are. | - | |
Detailed test run dataIn PLUS monitoring, you will see detailed data for each test run with the option to download JSON, HAR, or Trace for further debugging in the browser. | - | |
Time changeIn the PLUS plan, you can change the time of testing in case our tests conflict with the ongoing nightly maintenance of your servers, for example. | - | |
Navigation Types ReportNavigation type data allows you to focus on immediate types of page transitions such as Back/Forward Cache or Prerender. | - | |
NotesYou can add notes to your charts to highlight important changes to your website, such as the launch of a new version, the deployment of a new third-party component, and so on. | - | |
The prices listed are + VAT. | 5,400 CZK/ year. | 0 CZK/ month. |
Performance Consultant Martin Michálek will personally advise you and help you set everything up correctly and answer your questions. It couldn't be easier.
We're building the PageSpeed.cz Tester PLUS for everyone who professionally manages websites and knows that speed matters because it improves business metrics.
5,400 CZK + VAT per year (450 CZK per month) per website: 5 URLs of your website and 5 domains (yours or competitors). More is possible for an additional fee.
We provide a three-month money-back guarantee if you find that the tool is not for you.
Not sure? Check out our demo project and explore all the features of the tool.
Write us an email, send us a , or call us directly at +420 724 071 700.