Can Calibre read my Kindle in Browser?

Hi all,
Quick question...
I have a bunch of books in my Kindle library (see image)
and would like to read them in Calibre.

Can I import them from my Kindle library into Calibre?

And then can I export them to a PDF format?

Attachment 205702

I have looked through the guides and YT videos but maybe I missed something ?

Thanks for any help
Dave

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