Which monitor to choose to track page speed?

Question

Monitoring

Good afternoon.
Colleagues, tell me, please, which one is better to choose monitoring for tracking page loading speed?
Those. suppose I need to monitor how the page loads every minute until the domain.com site is fully loaded.
If this is done using standard tools (cabot, phpmonitor), then for some reason they only look at whether domain.com is available or not. (i.e., as I understand it, they only ask for availability on port: 80, 443, etc.), but do not wait for the page to fully load.
I would like to find a simple and "not heavy" solution for this problem. Preferably self-hosted.
I think there may be something like this in Zabbix, but it is heavy and brings with it a lot of unnecessary resources. Yes, and then it will be difficult to give the admin panel to a person who will also watch the response time of his "main" service.
Perhaps you know ready-made simple solutions that would help solve this problem.
Thank you!

Answer 1

Selenium and others like them, usually use selenium

Answer 2

To monitor the operation of the application on the web client side, you can use New Relic Browser or the same Pingdom.
Measuring page load speed is called real user monitoring (RUM). To do this, you need to embed a script in each page that sends the measurement results to the cloud service.
https://docs.newrelic.com/docs/browser/new-relic-b...
https://docs.newrelic.com/docs/browser/new-relic-b...
https://www. pingdom.com/wp-content/themes/pingdom-...