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willow wrote (edited )

Reply to comment by ziq in Feature Requests by kano

there's no way to determine which query parameters are used by the site (all sites use them, not just PHP ones) and which are tracking parameters.

but a good start is to remove anything starting with 'utm' (Google trackers - Urchin Tag Manager) as well as 'gclid' (Google click identifier) and 'fbclid' (Facebook click identifier). i imagine there's a list of these somewhere on the Internet that could be used.

edit: for the reason why you can't just remove them all, consider that even Raddle uses query parameters: https://raddle.me/?next%5Bid%5D=118106

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ziq wrote

Looks like youtube uses them too, so scrap this request.

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willow wrote

i think it's still a reasonable idea to remove known trackers. the UTM ones for example are often used in commercial mailing lists where a unique identifier is sent to every user, so the company can determine who clicked or shared the link.

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