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Willus.com's PDF Conversion Tips
for e-readers
Last updated December 2016
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I've been on mobileread.com now for over five years, regularly reading the PDF forum, and there are frequently questions from new members about converting and/or reading PDFs on e-readers such as the Kindle, Kobo, Nook, etc. The number one most common response I've seen from experienced e-reader users is that PDF is just about the worst source format there is for displaying on e-readers or for converting to other e-reader-friendly formats (such as epub or mobi). The number two most common response is to recommend that if you are serious about reading PDFs, you should buy a tablet rather than an e-ink reader. But still there is no denying that PDF is probably the most common document format used today and that many users desire to use their (e-ink) e-readers to view PDF content. So here are some tips and links to help you for converting / displaying PDF files on your e-reader. Be patient and persistent. It may take you more than one try to get something you find acceptable, because what is acceptable or a good solution for one person is often not a good solution for another person. It very much depends on your end goal (e.g. whether you want to convert PDF to a mobile format for a wide audience, or just for your own personal reading).

While it pains me to recommend a Microsoft, commercial solution, if you already have a recent version of MS Office, try loading your PDF directly into MS Word. MS Word now converts PDF files to Word documents amazingly well (another example here). It even automatically finds the text in scanned/bitmapped PDFs and uses (quite accurate) optical character recognition (OCR) to convert it to text characters in the Word document. Once you have your PDF file in MS Word format, you'll have a lot more capability to manipulate it into other formats and/or form factors.

The grand central station for advice from experienced users on anything and everything about e-reading is mobileread.com. There you'll find a group of knowledgeable and helpful individuals who can offer you advice. In particular, try these links:
    E-reader formats forum
    PDF forum
    "Which one should I buy?" forum (often has questions about PDF viewing)
    MobileRead Wiki on E-book Conversion
    Here are some specific MR threads on the topic:
        Ultimate PDF to Epub/Mobi conversion tips (last post Dec 2016)
        Perform OCR on PDF and convert to Text/Epub/HTML (last post Nov 2015)
        Converting PDF to Epub (last post Oct 2014)
        Convert PDF to readable format (started 20 July 2014)
        Crop PDF pages permanently (last post Nov 2015)
        Budget tablet to read scanned PDF (started 10 June 2014)
        Kindle keyboard vs. Paperwhite for PDFs (started 5 April 2014)
        Tutorial: Formulas to PNG (started 24 Sep 2013)
        Converting PDF to mobi and having it come out right (started 2 May 2013)
        Kindle Paperwhite and PDFs (started 18 Dec 2012)
        PDFs on a small screen (started 29 Dec 2012)
        Ultimate PDF to Epub/Mobi conversion tips (started 12 Dec 2011)

Stack exchange, a collection of question and answer sites, has an e-books site. Here are some examples:
    Reading PDFs on kindle devices
    How to crop PDFs permanently in Acrobat (from SuperUser.com)

One of the most popular cross-platform, open-source packages for converting among e-book formats, including PDF files, (and for maintaining e-reader libraries) is calibre. But you probably want to read these links first:
   MobileRead's "Read This First" Post about calibre PDF conversions
   calibre's PDF conversion "official statement"
   MobileRead's calibre forum

Another popular package is mobipocket creator, which is also free and imports PDF files, but is available only for MS Windows.

Some commonly used freeware PDF utilities, many of which are discussed on mobileread's PDF forum, are listed here. These can often be used either stand-alone or in conjunction with calibre to get a good conversion. I'm a little biased towards the first one. ;)
    k2pdfopt Optimize the PDF layout for a smaller screen
    Briss Crop PDFs using intuitive, Java-based GUI
    PDFtk PDF tool kit
    Coherent PDF (cpdf) Recommended! Open-source, cross-platform, swiss-army-knife, command-line PDF manipulation utility to merge/split/etc.
Much faster than java-based equivalents like jpdftweak and pdfsam.
    QPDF Open-source, PDF command-line manipulation tool. Looks similar to cpdf.
    Sejda Shell Interface    PDF command-line tool similar to PDFtk, java based
    Jpdftweak Java-based PDF manipulation utility like cpdf and pdfsam; GUI or command line.
Recommend cpdf instead if you are okay with the command line.
    PDFSAM PDF Split and Merge--open source and Java based; GUI or command line
I had trouble getting the command-line version to run. Recommend cpdf for that.
    PDF Scissors Similar to Briss; on-line tool
    ScanTailor Interactive post-processing tool for scanned pages; open source; no development since 2012
    ReadablePDF Linux-based scanned PDF post processing (uses ScanTailor)
    PDFMasher Similar to k2pdfopt; no development since 2013
    PaperCrop Similar to k2pdfopt; no development since 2012
    Cut2Col Java based, similar to k2pdfopt; no development since 2012
    PDFRead Similar to k2pdfopt; no development since 2011
    SoPDF Similar to k2pdfopt; no development since 2008

There are several custom-written PDF reading apps for e-readers which have been designed to provide a better experience than the built-in readers. Many of these require you to jailbreak your reader, so they are not for the faint of heart:
   KOReader for the Kindle Touch and Paperwhite
   KOReader for Kobo
   Liberator for the Kindle 4

As stated at the top of this page, I've found that MS Office does very good PDF conversions. On mobileread.com, I'd estimate that by far the most commonly mentioned commercial software packages for handling PDF files are ABBYY Fine Reader (particularly for quality OCR) and Adobe Acrobat Professional. I've also tried Able2Extract and it worked well on both native and scanned PDFs and has a trial version.

For reading PDF files, I use Krzysztof Kowalczyk's Sumatra PDF reader: a small, efficient, yet feature-rich open-source PDF reader. Sumatra also displays several file types other than PDF, including XPS, DJVU, CBZ, CBR, and PS/EPS (PS/EPS requires Ghostscript), EPUB, and MOBI. As of 2016 the SumatraPDF install consumes 12 MB of disk space versus Adobe Acrobat Reader's 200 MB of disk space (Acrobat Reader also takes much longer to install).

This page last modified
Monday, 26-Dec-2016 18:22:37 MST