eBook Conversion Services

ebook conversion services

eBook Conversion Services

Created Efficiently And Carefully

Bookmobile can convert your titles into high-quality eBooks at a reasonable cost. We focus on the details of eBook production by going through our rigorous Comprehensive Quality Check after the base conversion, testing your requested file formats on the most frequently used devices, and providing you with eBook proofs so that you have the option of going through a proofing process with us. The result? eBooks that are created efficiently and carefully, without a huge expense.

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About eBook Conversion Services

Bookmobile is happy to provide guidance and to work with any formatting compatible with reflowable eBook formats (EPUB and MOBI). We guarantee that the content of our eBooks will display across devices and do our best to meet design requirements. Content errors caused by the conversion process will be fixed at no charge, but editorial changes are subject to our hourly rate.

Conversion from Three Sources:

  • Normal PDFs
  • Scanned PDFs
  • Printed books

Conversion to Three Target Formats:

  • EPUB: The industry standard, reflowable EPUB files are used by all resellers except Amazon, which uses MOBI (see below).
  • MOBI: Amazon converts all EPUB files into MOBI. We convert to MOBI in-house so we can do quality checks prior to sending to Amazon.
  • Web-ready PDFs: Web-ready PDFs are used by some library eBook services.

EPUB Conversions:

Bookmobile strives to produce the best possible eBook conversions at competitive prices. First, Bookmobile’s conversion partner produces a base EPUB file. Then, Bookmobile’s highly trained staff performs a suite of checks and tests, and makes the necessary changes for a quality eBook that renders properly across eReader devices.

Kindle Conversions:

Bookmobile converts the EPUB to the MOBI format in-house for additional quality checks prior to providing the file to Amazon. The MOBI file is tested on the Kindle Fire tablet to ensure that the converted file renders in a high-quality fashion.

An Important Caveat:

Making eBooks from PDF files created with different fonts and page layout software by different designers creates an inherent challenge: conversions are almost never perfect. The only way to ensure a perfect conversion is to do a line-by-line proofreading of the converted file against the original.

While we perform a long list of quality checks on each title converted, we do not proofread line-by-line unless specifically requested by the publisher. We highly recommend that eBooks created from printed originals be proofread line-by-line, because those conversions have much higher error rates. Books typeset at Bookmobile have fewer conversion errors because of our workflow. Line-by-line proofreading services involve an additional charge beyond our base conversion and Comprehensive Quality Check services.

Our Comprehensive Quality Check:

  • Check link, footnote, and Table of Contents functionality.
  • Review basic formatting against original PDF.
  • Scan for character conversion and diacritical issues.
  • Evaluate charts, graphs, and images for quality.
  • Ensure treatment of tables is optimal.
  • Ensure thumbnail cover images render properly.
  • Add client-supplied eBook ISBN.
  • Verify metadata is included in EPUB.
  • Review EPUB file in Adobe Digital Editions, on the iPad, and on the Nook.
  • Review the converted EPUB to MOBI file on the Kindle Fire tablet.
  • Check for issues that cause problems with particular eBook resellers.
  • Validate with EPUB file checking tool (essential for distribution to resellers).
  • Implement any special review requests from the publisher.
  • Fix any issues discovered during the processes listed above.


Typical turnaround is about four weeks from the time book materials are received to the time comprehensively checked EPUB and MOBI files are delivered. Proofreading adds to turnaround time.

Proofreading Your eBook Conversion:

Please read our Guidelines for checking your eBook proofs from Bookmobile.


Correction requests sent after viewing eBook proofs are typically made within five days.


Frequently Asked Question About eBooks

Q: How are eBooks read?

A: On an Amazon Kindle, Apple iPad/iPhone/iPad, Barnes & Noble Nook, Macs, PCs, and other eReaders and tablets.


Q: Can I see the EPUB file without a reading device?

A: It is preferable to view proofs on a tablet; however, you may download Adobe Digital Editions to your Mac or PC.


Q: Why not just do the conversions in house?

A: You can; however, Bookmobile saves time and hassle and provides quality control for eBook files. Conversion without quality checks can mean a book has errors and may not pass the validation requirements necessary to upload to eBook vendors. Bookmobile’s process creates validated, well-formatted eBooks, and our procedures are constantly updated with the most current eBook production methods.


Q: How are eBooks made?

A: Simply put, we create an EPUB file from the source file. This file can be compared to a zipped mini-website. This becomes the master file and includes all the elements from the source file (images, text, etc.). Bookmobile then opens and edits this EPUB file in an XML editor to ensure a quality eBook.


Q: How much does conversion cost?

A: A quote can be provided with the following information:

  • The source (PDF from an application file, PDF from a scanned file, or printed copy to scan)

  • The number of titles in the order

  • Each title’s page count, trim size, and level of complexity

  • Target file type (EPUB, MOBI for Kindle, web-ready PDF)

  • Contact us for a quote.


Q: What kind of eBook files should we convert to?

A: Reflowable EPUB files have become the industry standard for eBooks. Amazon has its own format (MOBI). While the same EPUB file given to other sellers can also be given to Amazon, Amazon will do a further conversion into their format. Amazon often performs  conversions for free, but their review and correction process is slow and problematic. The majority of our publishers ask us to handle the EPUB to MOBI conversion so that the file furnished to Amazon has been through quality assurance already and is ready for sale immediately.


Q: Do you distribute eBooks? To whom?

A: We do—to Amazon, Apple, Barnes & Noble, Kobo, Overdrive (libraries), and Google.


Q: What is the pricing for distribution?

A: We’ll send a quote—let us know how many titles you have.


Q: Can images be included in the eBook?

A: Yes, but the quality of the images will not match that of a printed book on eInk devices that only render in black and white. Images look fantastic on tablets like the iPad.


Q: Is note-linking and cross-reference linking available?

A: Yes. There may be an additional charge.


Q: Do we need a different ISBN for the eBook or can we use the same ISBN as the print book?

A: Yes, a different ISBN is required for the eBook.


Q: Do we need a different ISBN for each type of eBook file (EPUB, Kindle)?

A: Currently, no.


Q: What is the difference between an EPUB, MOBI, and a web-ready PDF?

A: The first two are reflowable documents, and the latter is a essentially a PDF with links.


Q: What is a web-ready PDF for?

A: Many people use PDFs to sell digital books from their websites. The PDF can be downloaded to a Mac or PC, and opened in Adobe Digital Editions. There are many tablets that can read the web-ready PDF format as well. The photo quality depends on how large a file can be posted to your site. Control of who can and cannot download the file is handled on your end.


Q: What does DRM mean?

A: DRM is digital rights management—if DRM is provided, restrictions are placed to limit copying, printing, and sharing.

Q: Are eBooks protected with DRM?

A: Yes. Each vendor (Apple, Amazon, Barnes & Noble, etc.) ensures that. If you sell from your own website, you will need to do your own DRM.


Q: How do we set the price of the eBook?

A: Typically the digital list price is 80–100% of the lowest print price for the book.


More questions? Contact us.