[FEATURE] Implemented extract format

__Tasks:__

- [x] test coverage
- [ ] gather feedback for my changes


__Informations:__

| Q             | A
| ------------- | ---
| Tests pass?   | yes
| Fixed tickets | none
| BC Breaks     | none
| Doc           | none
Didn't we say that we'll only check that for specified types? And isn't it possible that there's a point in an URL, so that this part would be removed?