Do you want to print cookbooks and reference books bought from Kindle ebook? those kindle ebook have copy-protection, you hate the DRM. What do you do? Well, if you like, we’ll tell you how to strip the copy-protection from your e-books, leaving a plain, vanilla e-book file in the format of your choice.

For the meat of the how-to, you should visit www.ebook-converter.com, which is both straightforward and detailed. user managed to get it up and running in a couple minutes. For a quick version – focussing on the Kindle, read on.

First, get a copy of the free trial Kindle drm removal, This tools converts strip all DRM from your e-books, so you can convert them from format to format.  second you need a freeware Clibre to convert new .mobi file to epub format after remove Kindle ebook drm, then convert epub to PDF file,  you get a perfect pdf file to print.

Run Kindle drm removal
select mobi file to decrypt, you navigate to the folder containing Kindle ebook files, it should be in folder “C:\Users\your-name\Documents\My Kindle Content” folder.

if this mobi file is copy from Kindle reader, then you should input PID of Kindle, you find it at “Home->Menu->Device Info->Serial Number”

Remove drm
click “Remove” button, it will create a new mobi file that can convert to other format using Calibre, you read it anywhere.

Convert .mobi file to PDF format to print

Download and install Calibre,  You are able to convert new .mobi file to epub format after remove Kindle ebook drm , then convert epub to PDF file,  you get a perfect pdf file to print.

Nexus 7 Kindle Fire HD screen test

the Google Nexus 7 and Amazon Kindle Fire HD. “The displays on existing mini Tablets from Amazon and Google outperform the iPad mini in most of our lab tests.

Pixel resolution: iPad Mini has a 1,024×768 resolution with a pixel density of 163 pixels per inch (ppi). “That’s now considered to be rather on the low side.” The Nexus 7 and Kindle Fire HD are both rated at 216 ppi.

Screen reflectance: On the iPad Mini, screen reflectance “is a surprisingly high” 9 percent. On the Nexus 7 the reflectance is a much lower 5.9 percent, while on the Kindle Fire HD it is 6.4 percent. “As a result, the iPad mini reflects 53 percent more ambient light than the Nexus 7 and 41 percent more than the Kindle Fire HD.”

Color gamut: The iPad Mini has an “antiquated” small 62 percent Color Gamut. The Kindle Fire HD and Google Nexus 7 both deliver a much larger 86 percent color gamut. And the iPad Mini compares even more unfavorably with iPad 3 and iPhone 5, which have full 100 percent standard Color gamuts.

But the iPad Mini’s display doesn’t fall flat across the board. DisplayMate gives it a “good” or “very good” rating in some key categories in the chart below. For example, in the “Viewing Tests” category, the iPad Mini and Kindle Fire HD are rated “very good,” while the Nexus is rated only “good,” with notations stating that photos and videos on the Nexus 7 “have washed out color and contrast.”

Essentially a reiteration of DisplayMate’s previous criticism of the Nexus 7’s display, which got a “current overall display grade” of “B-”, versus “A-” for the Kindle Fire HD, and “B” for the iPad Mini.


Spark: The Definitive Guide download to pdf?


Spark: The Definitive Guide is most popular book about spark in oreilly.com, Learn how to use, deploy, and maintain Apache Spark with this comprehensive guide, written by the creators of the open-source cluster-computing framework. With an emphasis on improvements and new features in Spark 2.0. You’ll explore the basic operations and common functions of Spark’s structured APIs, as well as Structured Streaming, a new high-level API for building end-to-end streaming applications.

Oreilly Downloader is tools to download ebook on oreilly.com with 1-click. it download ebook to pdf file, read them on iPad, Kindle, tablet or other device without limitation, user also can print pdf ebook. It is very easy to use, just 1-click to download computer science book on oreilly.com

This is step by step guide to download Spark: The Definitive Guide

1). Download and install Safari Online Downloader, it run like a browser, user sign in safari online in webpage, find book “Spark: The Definitive Guide” to download and open it.

2). Find book to download, click “Reading” button to open book.

2). User open book in downloader, wait until “Download” button is ready, click download button to download ebook, it takes a while.

3). Downloader go through all book pages , it takes a while.

4). new PDF file created when finished, it saved in My document folder, “doc\ebook converter\safari online downloader\” .