Originally Posted by Majorix
Can you load external .pdf's or .mobi's on your Paperwhite? This is an important matter to me, hope you can help.
You can sideload your own content (PDF or Mobi) by either connecting via USB and adding the files to the devices 'documents' folder (or transfer with Calibre) or by using the devices web browser (not sure about browser for PDF).
I keep my book on DropBox and use the Kindle's web browser (I have a Touch, but had a Paperwhite) to download Mobi files to the device wirelessly.