Converter works automatically - you only have to copy all page content and paste it here.
Go to the page where you can view your battle report, than press
place the mouse cursor in the text area below and press Ctrl+V (paste).
Then, click "Next step". If you like, you can select additional options before "Save".
If you want to view some reports on the one page, just add their id numbers after "," as a separator in the url.