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There’s lots of rules and patterns in this implementation, but it’s worth bearing in mind that you can normally get a clean URL by looking at the <link rel=cano

There’s lots of rules and patterns in this implementation, but it’s worth bearing in mind that you can normally get a clean URL by looking at the <link rel=canonical> element. Sites put this in because they want search engines to index a single clean URL rather than many tracking URLs, so it’s pretty reliable.

account42 6y ago
That works if you want to get a clean URL to share with others. But if instead you have gotten a link then not using built-in patters means you would first need to retrieve the site with the tracking parameters to get to the canonical URL.