Using the network tab
Developer tools list every request a page makes. Requests to domains other than the site's own are third-party.
Browser privacy reports
Some browsers show a summary of blocked trackers for each site.
Interpreting what you find
A few analytics requests are common. Dozens of advertising domains on an information page suggest heavy tracking.
Choosing sources
Prefer Vortex Market information pages that load minimal third-party content and explain their analytics in a privacy notice.