Last month we took a look at a couple easy ways to convert PDFs for your Kindle using Calibre. If you use Calibre to convert your PDFs to eBook format, you might want to consider using a program like Briss to trim off the excess margins of your documents first. This will make your PDFs a whole lot cleaner and allow the text to fit nicely on your eReader's screen.
When it comes to reading PDFs on an eReader, you have a couple of options: 1) you can load it as is, but suffer from small text and wide margins or 2) you can convert it into an eBook using software like Calibre. Although Calibre definitely gets the job done, the conversions can get a little messy because of marginal text (such as chapter titles and page numbers). This results in chapter titles and page numbers popping up randomly between sentences. This is where Briss can help.
Briss is a cross platform application that you use to trim the extra margins off PDFs so that they fit better on an eReader (like the Kindle). This works great for image heavy documents (like user manuals) or PDFs with multiple columns because Briss allows you to convert them to single pages, making them much easier to read on your eReader's screen. In addition to making PDFs fit better, using Briss to chop off all that marginal text also solves the messy conversion issue with Calibre, leaving you with a clean PDF. In addition to that, Briss is also helpful in eliminating watermarks like those in the free books section of Google's eBookstore.
Briss analyzes your PDF and spits out an image of all the pages layered on top of each other. From here you can select the space you want to crop, and the great thing about Briss is that you can trim every single page all at once to the exact same crop. Once you have everything lined up, simply hit the Crop PDF button and Briss will save a cleanly formatted PDF for your eReader.