How do I import K-1 pdf to Turbo Tax Premier?

The Schedule K-1 can only be entered manually.

If you are using the TurboTax online editions, only the Premium edition supports entry of a Schedule K-1

To enter a Schedule K-1

Click on Federal
Click on Wages & Income
Scroll down to S-corps, Partnerships, and Trusts
On Schedule K-1, Q, click on the start or revisit button

a pdf can not be imported. you would need the k-1 in the form of a XXXX.txf file to import. one cannot be converted into the other