Would be great to add tampermonkey/greasemonkey support. Opened a ticket for it
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On the other hand tampermonkey/greasemonkey are content scripts that get injected into loaded pages. An implementation here would look like: the user navigates to a Zoom meeting, they load the entire page, and then a script gets injected to perform a `window.location` redirect. This will be slower and depending on the timing of events you may even still get the Zoom file download prompt.
So I don't think tampermonkey/greasemonkey is a good fit here.
As I understand issue linked above, they want to support it but currently does not, in official releases. What's supported is catching all requests in a page, but that's after the contentscript has been applied to the page, which means what arkadiyt wrote would still be accurate.