How to Upload a Mobi File to Ipad/kindle

Nosotros release all Have Command ebooks in iii formats: PDF, EPUB, and Mobipocket. PDF is the format we started with dorsum in 2003, and it remains the best option for reading on a computer or a large-screen iPad, since we put pregnant endeavour into keeping text and associated screenshots together on pages, fugitive widows and orphans, and creating an attractive two-column layout for our Crash Courses. EPUB gained popularity later on Apple tree's release of iBooks, and it'south best for small-screen iOS devices considering information technology reflows to match the screen and your desired font size. Mobipocket, more often than not abbreviated to merely Mobi, is similar to EPUB, merely is relevant only for those who prefer to read on one of Amazon's Kindle devices or apps.

How popular would yous expect each of these to be? We tracked some downloads recently and found that about 55 percent of the downloads were PDF, nigh 35 pct were EPUB, and well-nigh 8 per centum were Mobi. (These numbers are a chip rough because people tin can download multiple formats.)

Since Mobi is our least used format, and since problems that affect the EPUB generally employ to the Mobi as well, nosotros put less endeavour into checking and tweaking the Mobi version of each book. Nonetheless, we were a little surprised recently to get email from a reader complaining that the Mobi version of "Accept 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.

Information technology turns out that 50 MB is the magic file size over which Amazon's Transport to Kindle app and Transport to Kindle email service refuse to work. Only 3 of our books had e'er exceeded that size, with "Have Control of Preview" and "iOS ix: A Take Command Crash Course" joining the iTunes volume. "Photos for Mac: A Take Command Crash Class" snuck under the wire at 49.6 MB.

File Format Background — Why were the Mobi files so big? The Mobi file for the iTunes book was 53.4 MB, simply the EPUB was simply 21.nine MB, and the PDF weighed in at a graceful half-dozen.4 MB. A little background about each format will explain the deviation.

• PDF: Since PDF was beginning released in 1993, when networks were much slower and storage devices much smaller, reducing the size of PDF files was important. Equally 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 half dozen.4 MB, a savings of 77 per centum.

  We use Apago's PDF Enhancer to optimize our PDFs in a diverseness of ways while even so keeping the quality high. (PDF Enhancer hasn't been updated in years, but it continues to work well for united states of america. Many of its capabilities are also bachelor in Acrobat Pro, admitting in a class that requires more than transmission intervention.)



• EPUB: At its heart, an EPUB is really a Web site made up of HTML files and images, all Zip-compressed into a single file. Unfortunately, lossless Aught pinch may not exercise a lot for what is essentially a Web site. The files that brand up the EPUB of the iTunes book are 23 MB, but the EPUB itself is but v percentage smaller, at 21.ix MB.

• Mobi: Mobipocket was purchased by Amazon in 2005 and has changed quite a scrap since then. Nowadays, a Mobi file contains the book in 2 formats, the original Mobipocket version (actually Amazon'due south AZW format, which is very slightly modified Mobipocket) and Amazon'south KF8, as well known equally AZW3, which debuted alongside the first Kindle Burn down tablet. Since nigh Mobi files are created from an EPUB source certificate by Amazon'south KindleGen tool, bundling two versions of the book into the same file means that the Mobi is by and large roughly twice the size of the EPUB.

Working around the 50 MB Problem — Now that we're enlightened of the Ship to Kindle l MB limitation, we'll attempt to ensure that our books don't exceed this size. The solution to that is quite simple.

We take our screenshots in PNG format, which is ideal for images with large areas of solid color. However, screenshots that show the Mac's Desktop or the iPad'south 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 5 or six largest images in the iTunes book to JPEG and and then regenerating the Mobi file were all that was necessary to bring information technology downwards in size. (We did the same with the Preview volume, then neither should cause bug anymore.)

Should we take a book that tin't easily be brought under l MB, or if you should meet a Mobi file from another source that'due south larger than 50 MB, there are other ways you can load the files onto a Kindle or into the Kindle app.

• Kindle: For a Kindle tablet, connect the device to your Mac via a USB cablevision. A KINDLE deejay appears on the Desktop. Open it, and so re-create the Mobi file to the Documents binder inside. Squirt the KINDLE disk and so look for your file in the Docs part of the Kindle interface. Don't put files in the Books binder; that won't work.

• Kindle Apps: If yous prefer to maintain your ebook library in the Kindle app on an iOS device, the play a trick on is to use your Mac to put a copy in Dropbox, Google Drive, or iCloud Drive and and so download it in the corresponding app on the iOS device.

  In Dropbox, once yous've loaded the document, tap the triple-dot More button, tap Export in the popover, tap Open up In in the bottom row in the Share sheet, so tap Copy to Kindle in the peak row of the Share sheet.

  
  

  The process is essentially the aforementioned in Google Drive; in iCloud Drive, Copy to Kindle appears in the top row of the first Share sheet, eliminating the demand for the Open In step.

Yous might wonder why I don't recommend downloading from your Take Control library to a Kindle Burn down. The reason is that downloaded files end upwardly in KINDLE/Download and must be moved into KINDLE/Documents 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 doesn't seem to be bachelor whatever longer, so y'all'll need to discover another file management app to move downloaded files if you lot want to use this technique.

I suspect that Amazon limits the file size to fifty MB for historical reasons related to the low-throughput Whispernet network that the early Kindles used. My agreement 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 — here's hoping that Amazon lifts it presently.

In the concurrently, you tin can piece of work around the restriction with a USB connexion or an Internet file sharing service.

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Source: https://tidbits.com/2016/08/15/dealing-with-send-to-kindles-50-mb-limit/

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