Posts Tagged ‘pdf’

PDF vs. EPUB: which is the best format?

Saturday, November 24th, 2012

We’ve received many questions recently about the differences between pdf format and epub format, so we thought it might be helpful to provide some details on the differences between the two formats.


PDF format was specifically designed not to be fluid, to the contrary; it’s meant to guarantee an identical display no matter what the support, without taking into account the size of the screen, etc. It’s the ideal format for preparing a document for printing on paper, since you can be sure that the layout you have prepared will display exactly the same for the printer as on your own computer. However, what makes it perfect for print is exactly what makes it unsuitable for ebooks, which must be readable in many different conditions, depending on the size of the screen and the needs and preferences of the reader.

To make pdf reading easier, on the Cybook Odyssey HD FrontLight, Bookeen proposes a reflow mode for pdfs, which simplifies the layout of your document to make it more readable on an ebook reader, which has a smaller screen than a PC or A4 format page.

PDF reflow mode

Even with this option, we recommend that you avoid the pdf format whenever possible, unless your document has been specifically formatted for your Cybook and your personal preferences (texte size, choice of font…) since the inherent rigidity of this format will never allow a completely personnalised display.


The EPUB format is specifically designed to provide an optimal reading experience on the support of your choice, by allowing the text to adapt to the size of the screen while still respecting the layout and formatting. EPUB allows you to modify the size of the text on the fly and to choose the font you prefer (did you know you can even add your favourite fonts to your Cybook? Just place the font files into the “Fonts” folder on your Cybook, then choose your favourite font from the menu while reading). Your Cybook even allows you to choose whether or not to activate justification, hyphenation, and even typographic ligatures if your font proposes them (for example Minion font, provided with your Cybook)!

Exemple de ligatures typographiques. Source :

Examples of typographic ligatures. Image from wikipedia.

EPUB is the ideal format for ebooks. For an optimal reading experience, we strongly recommend you choose EPUB whenever possible.

Adobe PDF and EPUB will be present in Bookeen products

Tuesday, February 17th, 2009

Bookeen has signed an agreement with Adobe to license the Adobe Reader Mobile SDK for its products.
The new software engine delivers support for reflowable PDF technology, Adobe’s content protection technology, as well as the EPUB file format, an XML-based eBook standard with broad support from the publishing industry.
The Bookeen products will be compatible with Adobe Digital Edition Desktop application (compatible both on PCs and Macs) enabling users to acquire and download their content from a variety of sources.
Both the PDF and EPUB support will become available through a software release scheduled in quarter 1 2009, more details will follow later.

Adobe Press Release

Software Upgrade for the Cybook Gen3: Ver. 1.2 Build 796

Friday, September 5th, 2008

Dear Cybook User,

This utility updates the Cybook Gen3 (CYBGEN310B) system software to version 1.2.
Happy e-reading…

Bookeen Support Team

What’s New in Version 1.2 (Build 796)

  • New: user interface now available in 6 languages (English, French, German, Spanish, Italian & Dutch).
  • Improvement: reduced power consumption.
  • Improvement: reduced memory usage.
  • New: zoom menu for PDF files.
  • Improvement: fast panning within PDF files.
  • Improvement: general stability and performance.
  • Fix: SD card detection.
  • Fix: last page saved for files with UTF8 (non ANSI) names.
  • New: possibility to restore factory settings (also deletes personal data in internal memory). To do so, press volume- while switching off.

What was New in Version 1.1

  • New: hyphenation support in Mobipocket files.
  • Improvement: new button management (faster and buffered key detection).
  • Improvement: new event management (previous versions could miss events).
  • Improvement: reduced power consumption.
  • Improvement: table support in Mobipocket files.
  • Bug fix: large covers in PRC files.
  • Bug fix: Asian characters are now displayed properly in PRC files.
  • Bug fix: PDF viewer memory management (to be continued).
  • Bug fix: TrueType font detection (“Fonts” directory).
  • Bug fix: various user interface items (to be continued).
  • Bug fix: detection of MP3 playback frequencies.
  • New: in the “Library”, a lock symbol is visible when a read-only SD card is inserted.

How to Download

  1. From your computer, visit
  2. Login and download the upgrade file.
  3. Extract the content of the downloaded zip file.
  4. You should get a single file “update_kernel”; this is the firmware upgrade utility.
  5. Copy the file “update_kernel” to the root of an SD card.

How to Install

  1. Make sure your Cybook has enough power to operate.
  2. Switch off your device.
  3. Insert the SD card into your Cybook.
  4. Switch on your device.
  5. When the boot image is visible (Cybook & Bookeen logotypes), press the center key of the navigation button and keep it pressed for a few seconds until the screen flashes.
  6. When the screen flashes, you can release the key; the upgrade process is launched.
  7. Only the needed sections are updated. The upgrade should be completed after a couple of minutes.
  8. When the upgrade is completed, the Cybook starts normally.
  9. Delete the file “update_kernel” from the SD card and from your computer. This file will not be useful anymore.
  10. Congratulations! Your Cybook has been upgraded with version 1.2.

How to Check my Cybook Version

  • Open the contextual menu.
  • Open “Advanced…”, then “About…”.
  • “Boo Reader” section shows “Version: x.y (build z)”.

How to Send Suggestions

  • Your feedback is very much welcome.
  • Please avoid using blogs, forums or mailing lists.
  • Simply send an email to
  • All suggestions are taken into account as much as possible in our development schedule.

What’s Next

  • New directory view.
  • Improved Mobipocket, HTML & TXT support.
  • More languages.

PDF on tracks, design slight modifications and release date

Sunday, October 7th, 2007

We have recently released the 0.98 version of the firmware. As announced previously, in this version we do support PDF format with some features as fit width, fit page, fit height and rotate 0°, 90°, 180°,270°.

The software will be ready on time and as already said the supported formats will be for this first release: Mobipocket (encrypted and unencrypted), HTML, PalmDoc, Txt and PDF. RTF and other formats supports will come on further firmware releases. The firmware update will of course be possible for every Cybook Gen3 possessor.

The Cybook final design has been slightly modified, the surface treatment is not glossy anymore but keeps its softtouch. The navigation button has also been modified to be easier to press on.

Concerning our release date, the Cybook Gen3 will be definitely available before end of october. We will send very soon an official release date via our newsletter (subscribe at and this blog. At this occasion we will also announce the opening of Cybook Gen3 pre-sales on our website.

Concerning the price we confirm a $350 for US territory and 350 Euros for Europe.