Should I offer to give a presentation in a postdoc interview if not requested in the invitation?
It would probably be worth it to develop such a thing as a backup, but I wouldn't offer it unasked.
If they already have an idea of the things they need to know and have questions ready, then I doubt that it would help and, unless it is &quot;just right&quot; (whatever that means), it could hurt.
Give them what they ask for.
But preparing a presentation will probably help you prepare and give you a bit of practice in presenting yourself. If nothing else, it gives you sentences and phrases to drop in as needed in the interview.