How can I transfer my pdfs on iPad to macbook?

The iPad documentation storage system is application based rather than filesystem based so how you do it will depend, in part, on what application you are using for your PDF files. One method that will always work is this: open the PDF in your iPad app. Either at the top of the screen or the bottom you’ll see the share icon.

Click on that and check out the options. One will certainly be mail so you could mail it to yourself. There may be other options there depending on the App you are using. For example there may be the option to move the PDF to iCloud or another online service. Again, depending on the app you are using, there may be come other input/output options for transferring files into other Apps or to cloud services.

Finally, you can connect the iPad with a cable, open iTunes, search through the list of apps on your iPad and download the file to the computer that way.,

In the top left of iBooks there are two menu items - Library and one with three horizontal lines. With your PDF open, click on the 3 horizontal lines. Now you should see the share icon and you can click on that and choose to email the PDF to yourself.

OH! I'm so sorry, I steered you wrong. The share icon is right there, third from the left. its the one with the arrow popping out the top of the rectangle. I Assumed PDFs and books were treated the same. You know what happens when you assume. Click on the share icon, choose email and go.

OOps duplicate.