Arabic Coins and How to Read Them Pdf
Many ebook readers natively support PDF documents simply, unfortunately, not all PDF documents are easy to read on a small ebook reader screen. Let's have a look at two elementary and complimentary means to catechumen PDF files for enjoyable reading.
Kindles, Nooks, Sony Pocket Readers, and other popular readers back up native PDF rendering. The problem with native rendering, however, is that many PDF documents are formatted to be read on a large screen or printed and read in hard copy. Large margins, multiple columns, and other formatting choices that aren't such a big deal when the certificate in printed on 8.5×xi paper or displayed on a xx″ monitor return the certificate virtually unreadable when loaded into an e-reader with a 6″ screen. Today we're going to await at two ways you tin can re-format a PDF file for enjoyable reading on your favorite reader.
What You lot'll Need
For our tutorial you'll need the following things:
- A copy of ebook management software Calibre.
- A copy of K2pdfopt.
- A PDF file to convert.
- An e-reader to endeavour the file out on.
We propose keep a clean copy of your PDF test file in a divide directory so if all your conversion attempts go awry you'll have the original safe and sound.
Converting Using Calibre
Calibre is an crawly and open source ebook management tool. If yous've read this far and have no intention of fifty-fifty mucking around with any PDF files you should go and download it regardless. It'southward a fantastic tool for managing ebooks and ebook readers. What nosotros're interested in, volume management aside, is the conversion tool built into Calibre.
If you're totally new to using Calibre and demand assist installing it and getting your books into it, bank check out one of our previous Calibre-based guides to get started. Once you lot've installed it and yous've loaded up a volume y'all want to catechumen information technology'due south time to go converting.
For our example we'll be using a particularly circuitous textbook (multiple columns, charts, graphic headers for each chapter, etc.) and a Kindle. Start let's look at what the original PDF file looks like on the Kindle screen.
That's eye-squintingly small on a big monitor screen and nearly illegible on a Kindle screen. There's no way we could comfortable read that on a 6″ kindle screen without serious eye strain and a headache. Let's see if we can convert it with Calibre.
Open Calibre and right click on the book. Select Catechumen Books –> Convert individually. Here you'll find an enormously detailed menu with toggles and settings galore. It'southward easy to get overwhelmed and some of the settings are pretty arcane if you're unfamiliar with printing terms and/or search cord expressions. For the start conversion stick with the default settings and convert betwixt PDF and a suitable format for your ebook reader or fifty-fifty PDF to PDF to restructure multi-column PDF files into a more streamlined document.
When it's washed converting you can check the formatting on your calculator by double clicking on the converted file in the right manus book information column or you tin can transfer information technology to your device. We transferred it to the device to go a existent sense of how information technology looked on the page.
Although nosotros've used Calibre to convert hundreds of ebooks over the last few years with very few issues this particular PDF file proved to be a real challenge for it. The multiple columns, odd formatting choices, and other factors really stumped Calibre.
While Calibre ordinarily does a fine job converting PDF files nosotros picked one of the most difficult to convert PDFs we had on hand to demonstrate that things don't always go as planned. We also picked a really hard to convert PDF and so that nosotros could in plough show off the next tool in our tutorial, K2pdfopt. It's like the nuclear choice when the unremarkably reliable Calibre fails to creepo out a working conversion. If you find yourself in a similar boat, your complex PDF document didn't turn out right, you lot'll probable be thrilled with K2pdfopt.
Converting Optimizing PDF files using K2pdfopt
Offset, nosotros desire to give a big cheers to Abhijeet at Guiding Tech; we'd been looking for a tool similar this and he tipped the states off at only the right time. K2pdfopt is designed to optimize PDF documents for small-scale screen e-readers. Rather than convert the document into raw text and try to reformat it, it instead advisedly crops and realigns the pieces as though they were a serial of images. The terminate issue is a new PDF file that is actually true to the original document and free from odd OCR blunders (as it doesn't attempt to catechumen or reflow the text).
Using K2pdfopt is a snap. Excerpt the executable into a folder, elevate a PDF file onto the EXE and let it work—equally seen in the screenshot above. Nosotros dropped the same difficult to format textbook PDF into K2pdfopt and crossed our fingers. Given how much Calibre struggled with the document we weren't certain what to expect. When the conversion completed (you'll see a copy of your PDF file with the file named annotated similar filename_k2opt.pdf in the K2pdfopt folder) we copied information technology over to our Kindle and were shocked at how well it handled the complex text nosotros threw at it. 
The text is slightly less crisp than in our PDF to MOBI conversion (see the screen capture in the Calibre department) but it is all there, with proper formatting, and without whatever screwy OCR errors. Cheers to K2pdfopt we went from having a PDF that was illegible on the Kindle to having a PDF that was as easy to read as a make clean photocopy.
The simply downside we could notice in using K2pdfopt was the increase in file size. A 15MB PDF file, when converted with K2pdfopt, ballooned to 93MB. When you consider how few conversions Calibre doesn't properly handle and how few books we'd need to really send through the K2pdfopt image-based conversion process, though, it's not a bad trade off. We can stand to increment the file size on a few PDFs in order to proceeds access to a portable and easily read copy.
Update: Shortly after this article went live on the site Marcus wrote in and asked
What if you took the K2pdfopt.exe output and ran the resulting PDF through Calibre once more to catechumen it to a MOBI or ePUB? Maybe that would end Calibre from choking on the multi-column format since information technology would now exist formatted more like a standard book. Could you guys try information technology out?
What if, Marcus? What if, indeed. We pigeon in deeper, Inception-style, and performed a exam merely every bit you requested. Calibre handled the conversion beautifully and the text cleaned up perfectly. How perfectly? Here'south a snippet of the text seen in the screenshot higher up (which is properly formatted but a little grainy) after the reconversion process:
And there you have it. For a particularly tricky PDF file y'all tin run it through K2pdfopt.exe, then dump information technology dorsum into Calibre for a cleanup laissez passer (cheque out how smoothen the font is now in the above sample), and enjoy a totally optimized PDF. Good call, Marcus! The extra pace just adds a few minutes to the process and really tidies things up.
Have a conversion tip, trick, or tool to share? We're interested to hear virtually it so shoot u.s. an email at tips@howtogeek.com or audio off about it in the comments here.
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Source: https://www.howtogeek.com/69481/how-to-convert-pdf-files-for-easy-ebook-reading/
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