How to monitor page content changes on a website using Zabbix?

Question

Monitoring

It is necessary to monitor changes on sites. I looked at the official Zabbix documentation - I thought that theoretically it is possible to monitor. But I didn't find any additional information on the net. According to examples from documentation, I was unable to assemble a working one - alerts did not work when changing the text. Perhaps I misinterpreted the documentation. For example.com :
Perhaps someone has done a similar task or encountered. I have Zabbix 5.

Answer 1

If I remember correctly, such a check in zabbix, among other things, returns different data in the hels, including the size of the response. Honestly, I don’t remember zabbix already and I don’t have it at hand.
Put a webcheck and dig into what data it will collect
. If there is no response size, you can always use user parameters on the zabbix agent or scripts on the zabbix server and use the script
curl https://example.com | grep -c "Example"
and react to changes.
About the presence of a line in the response: There is an option that it is not one nfrfz there, use a more unique option