If you're a big fan of e-books, then you probably spend a lot of time in front of your monitor. The problem is that this can be very bad for you in all sorts of way - your back, your eyes and your general posture. Other problems involved with e-books regard the size of the files, the formatting of images and whether or not you can transfer them from your PC for reading on a portable device. Fortunately, there are a number of applications out there designed to help avoid these problems by making reading books - or any kind of lengthy texts online - safer and easier. Here's a selection of the best:

• DNL Reader - Reduce e-book file sizes and amplify text

• uBook - Reads e-books on Windows and Pocket PCs

• yBook - Authentically flicks through the pages of your book

• GonVisor - Especially designed for comics and magazines

• CoolRead - Read and edit e-books with this all-in-one powerful reader