Ive been reading Take Control eBooks on my Mac since PDF was the only format.;-) I still dont have an iPhone or iPad so PDF is still my favorite format.Thoughtful, detailed coverage of everything Apple for 30 years and the TidBITS Content Network for Apple professionals.
PDF is the format we started with back in 2003, and it remains the best option for reading on a computer or a large-screen iPad, since we put significant effort into keeping text and associated screenshots together on pages, avoiding widows and orphans, and creating an attractive two-column layout for our Crash Courses. EPUB gained popularity after Apples release of iBooks, and its best for small-screen iOS devices because it reflows to match the screen and your desired font size. Mobipocket, generally abbreviated to just Mobi, is similar to EPUB, but is relevant only for those who prefer to read on one of Amazons Kindle devices or apps. Nonetheless, we were a little surprised recently to get email from a reader complaining that the Mobi version of Take Control of iTunes 12: The FAQ was too big to copy to a Kindle. Could it really have been that much larger than our other books Some research was necessary. Only three of our books had ever exceeded that size, with Take Control of Preview and iOS 9: A Take Control Crash Course joining the iTunes book. Photos for Mac: A Take Control Crash Course snuck under the wire at 49.6 MB. As a result, Adobe has long provided tools in Acrobat Pro to reduce the size of images automatically by downsampling and compressing them. Those capabilities are extremely effective, dropping the source PDF of the iTunes book from 28.2 MB to 6.4 MB, a savings of 77 percent. Many of its capabilities are also available in Acrobat Pro, albeit in a form that requires more manual intervention.). Kindle 1.21 Does Not Open Mobi Files Zip Compression MayUnfortunately, lossless Zip compression may not do a lot for what is essentially a Web site. The files that make up the EPUB of the iTunes book are 23 MB, but the EPUB itself is only 5 percent smaller, at 21.9 MB. Nowadays, a Mobi file contains the book in two formats, the original Mobipocket version (actually Amazons AZW format, which is very slightly modified Mobipocket) and Amazons KF8, also known as AZW3, which debuted alongside the first Kindle Fire tablet. Since most Mobi files are created from an EPUB source document by Amazons KindleGen tool, bundling two versions of the book into the same file means that the Mobi is generally roughly twice the size of the EPUB. However, screenshots that show the Macs Desktop or the iPads Lock screen, for instance, are essentially photos, and converting those PNG files to JPEG can drop the size significantly without a perceptible loss of quality. Converting the five or six largest images in the iTunes book to JPEG and then regenerating the Mobi file were all that was necessary to bring it down in size. We did the same with the Preview book, so neither should cause problems anymore.). Open it, and then copy the Mobi file to the Documents folder inside. Eject the KINDLE disk and then look for your file in the Docs part of the Kindle interface. Kindle 1.21 Does Not Open Mobi Files Download And MustThe reason is that downloaded files end up in KINDLEDownload and must be moved into KINDLEDocuments manually, using an app like File Expert. The instructions in How to Download EPUB, PDF, and Mobipocket to the Kindle Fire (22 April 2012) are still accurate, although File Expert doesnt seem to be available any longer, so youll need to find another file management app to move downloaded files if you want to use this technique. My understanding is that when the Send to Kindle app or email service transfers the actual file to a particular Kindle, it sends only the format that makes sense for that device. But in a world of fast Wi-Fi, this limitation seems annoyingly quaint heres hoping that Amazon lifts it soon. For 29 years, weve published professional, member-supported tech journalism that makes you smarter.
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