Yes, the website (where you manage your card, check spending, etc) can create and manage all your virtual cards. In fact it gives you a lot more customization over the virtual cards than the browser extension. But the extension is more convenient, it automatically offers to generate a virtual card on shopping cart pages for you. But I use a combination of both.
This is how I manage subscriptions too. I give every subscription a unique virtual card and I set it to “expire” or deactivate after 24 hours. That way the cards stays active for the initial charge/verification, but then it will not work if the card gets charged at the end of the trial. If I decide to keep the subscription then I just log into the capital one site and reactivate the card (it’s just a simple little iOS style toggle switch) before the trial ends so that it continues.
This is how I manage subscriptions too. I give every subscription a unique virtual card and I set it to “expire” or deactivate after 24 hours. That way the cards stays active for the initial charge/verification, but then it will not work if the card gets charged at the end of the trial. If I decide to keep the subscription then I just log into the capital one site and reactivate the card (it’s just a simple little iOS style toggle switch) before the trial ends so that it continues.