Simple Structure for Fixed Layout EPUB 2018/09/18 BOOK WALKER / - - PowerPoint PPT Presentation

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Simple Structure for Fixed Layout EPUB 2018/09/18 BOOK WALKER / - - PowerPoint PPT Presentation

Aug 25, 2022 109 likes •229 views

Simple Structure for Fixed Layout EPUB 2018/09/18 BOOK WALKER / KADOKAWA Keio SFC Advanced Publishing Laboratory Shinya Takami, Ph.D. Speaker - First EPUB 3 based eBook service in Japan - First million-class digital magazine

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SLIDE 1

Simple Structure
 for
 Fixed Layout EPUB

2018/09/18 BOOK WALKER / KADOKAWA
 Keio SFC Advanced Publishing Laboratory Shinya Takami, Ph.D.

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SLIDE 2

Speaker

  • Shinya Takami, Ph.D.
  • @ Rakuten
  • Technical Director of Rakuten Kobo in 2012

  • First EPUB 3 based eBook service in Japan
  • @ BOOK WALKER / KADOKAWA
  • Technical Director of d-Magazine in 2014

  • First million-class digital magazine service in Japan
  • EPUB-WG leader of APL in 2018
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SLIDE 3

Fixed Layout in Japan

86% of eBook sales is
 ‘Fixed Layout’ in Japan

Books: 14%, Manga: 76%, Magazine: 10%

Report in 2016

Efficiency of production, distribution and presentation (conversion) is important for wholesome growth

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SLIDE 4

eBook market in Japan

Domestic


(as format)

EPUB 3


(as format)

EPUB 3


(as package)

2012 2014 2016

EPUB is mainly used for distribution Shift to EPUB and market growth

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SLIDE 5

FXL-EPUB standard in Japan

OPF spine XHTML SVG image

Image-Map

style JPEG CSS

EBPAJ’s EPUB

Navigation Document manifest

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SLIDE 6

Too Complex to parse

  • EPUB as distribution package
  • Many services convert EPUB to Images


and settings for their reading system

  • EBPAJ’s EPUB requires hierarchical parse


OPF (spine, manifest) -> XHTML (SVG) -> JPEG

  • OPF is enough for conversion
  • XHTML & CSS is NOT used in many cases
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SLIDE 7

SVG is no more silver bullet

  • SVG was useful for Image-Fit
  • Latest browser changed behavior

Image tagged SVG wrapped Browser view

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SLIDE 8

Simple FXL-EPUB structure

OPF spine

XTHML & CSS is NOT mandatory

JPEG

Proposed EPUB

Navigation Document manifest XTHML PDF Video

fallback

JPEG


(thumbnail) fallback

for compatibility for Manga etc.

JPEG


(thumbnail)

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SLIDE 9

Problem

  • Image-Map feature
  • Image-Map is still useful
  • Image-Map feature is used in TOC page
  • Also expected to use for advertisement
  • Examples for Alternative Image-Map
  • Set SVG file as fallback of JPEG etc.
  • Set extra XML/JSON file in OPF
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SLIDE 10

Discussions

  • EPUB3.3? for Simple FXL-EPUB
  • Hard to parse EPUB for new services
  • Discuss no-fallbacks for images again
  • Alternative Image-Map in EPUB
  • Better productivity with collection
  • Any good solutions?
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SLIDE 11

Shinya Takami, Ph.D.

Thank You!