Do more on the web, with a fast and secure browser!
Download Opera browser with:
How do I delete only cookies and/or cache without also deleting all open tabs and browser history?
It is very frustrating that this can not be done separately.
You won't be able to delete cookies for any currently open sites since they are in use. But in the current version cache and history are combined. You could delete just cookies, but as soon as you want to delete cache you delete everything.
There's a cache in Android Settings - Apps - Opera that can be cleared...