In order to reproduce some nasty behavior I want to delay response to particular url (set of urls) in browser, ideally Firefox.

I know that in developer tools it's possible to enable throttling, but I don't want to apply it to all responses.

Is there any extension or any other method?

1 Answer 1


Fiddler from Telerik can be used to do that. Using these examples, you can put in a specified delay in ms per KB uploaded.

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