Long PDFs slow people down for all kinds of reasons. Sometimes the file is too dense to skim quickly. Sometimes you need the key points without reading every page. Sometimes the document is in another ...

All products featured here are independently selected by our editors and writers. If you buy something through links on our site, Mashable may earn an affiliate commission. Kindles used to only ...

Struggling to transfer ebooks to your Kindle? Here's the step-by-step process for moving EPUB, MOBI, and PDF files to both new and old Kindle devices via both USB and Amazon's cloud.