I have been using Pocket (formerly "Read it Later" as my go to collecting app. If you are unfamiliar with Pocket, it acts as a vacuum cleaner, collecting all your web pages, documents and such that you want to read later is a wonderfully designed app. It is great for stripping away clutter from longer web pages you would like to read at a later date.
One of the challenges I have had is with PDF's. You can send PDF's to Pocket, however it is a little convoluted.
The caveats include:
- The PDF has to be hosted online.
- It may mangle images in the PDF.
- You need to go to this url and post the url of the PDF.