Presented at Code4Lib 2015 in Portland, OR on February 10, 2015 by Eben English (eenglish [at] bpl.org, Boston Public Library)
Another day, another library reinventing the book-viewer wheel. When will the madness end? This talk will explore the current landscape of book-viewer/page-turner applications for digital library systems with an eye towards helping you make the right decision for your project. We'll look at some the major players on the market (such as Internet Archive BookReader, Wellcome Player, Mirador, and WDL-Viewer to name a few) and compare them based on a number of criteria: feature sets, mobile/tablet friendliness, ease of integration, code health, test coverage, "market share" (number of implementers), and other important factors. We'll look at the results of ACTUAL USABILITY TESTS to see what features users REALLY want in a book-viewer, and how each app measures up.
We'll also discuss important recent trends (such as the IIIF
Presentation API) that have the potential to shape the book-viewer development landscape in the immediate future. Which page-turner applications are best poised to adopt/integrate/leverage these emerging standards? Which will become obsolete? This talk has the answers you need.
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Book Reader Bingo: Which Page-Turner Should I Use?
1. BOOK READER BINGO:
WHICH PAGE TURNER SHOULD I USE?
Eben English, Boston Public Library
@ebenenglish
Code4Lib 2015
2. WHAT WE TALK ABOUT
WHEN WE TALK ABOUT PAGE
TURNERS
Source: https://flic.kr/p/6Dpfff
3. WHATS IN SCOPE
web-based
open source
updated in last 2 years
4. ONE OF THESE THINGS IS
NOT LIKE THE OTHERS
Source: http://murlocparliament.com/wp-content/uploads/2010/12/1Of_These_Things.jpg
5. EVERYTHING IS AWESOME
Source: http://cdn.screenrant.com/wp-content/uploads/lego-movie-poster-1970s-astronaut-570x350.jpg
8. INTERNET ARCHIVE
BOOKREADER
Strengths
lots of examples to draw on
supports keyword search
embeddable (via <iframe>)
Drawbacks
harder to work with images of varying sizes
zoom not tile-based
lacks: rotation, page # input, structural nav
10. WDLVIEWER
Strengths
supports search (in a branch)
tile-based zooming
image rotation
Drawbacks
search results display linear-only
page # index display reflects image index rather than book pages
lacks: structural nav
16. MIRADOR 2*
Strengths
side-by-side comparison of multiple items
annotation support
structural navigation
Drawbacks
no search support (yet)
controls sometimes obscured by content
lacks: keyboard shortcuts for page navigation
17. OTHER CRITERIA
(SEE APPENDIX)
how actively maintained is it?
code weight
documentation
mobile/tablet UX
older browsers UX
implementation process
# of implementations
18. IIIF PRESENTATION API
http://iiif.io/api/presentation/2.0
API to deliver structural and presentation info
returns JSON-LD
abstracting page sequence out of the data passed
to viewer functions
allows for richer structural navigation
easily share works between repositories
Source: http://iiif.io/api/presentation/2.0/img/objects.png
19. IIIF PRESENTATION API
ranked by level of compliance
Mirador 2: fully compliant
Internet Archive BookReader: IIIF-compliant fork
(https://github.com/aeschylus/IIIFBookReader)
Diva.js: branch with work on Image and Presentation APIs
Wellcome Player: Image API, but not Presentation API (yet)
WDLViewer: no known activity?
20. USABILITY TESTING
What features do users really want?
What features are most useful?
What features are lacking?
Which book-reader do they like best?
21. USABILITY OBSERVATIONS
PRINT READING MODELS
DONT ALWAYS TRANSLATE
If I have to use the Table of Contents, it
means somethings not working right.
Winners: Wellcome Player, Mirador 2
22. USABILITY OBSERVATIONS
USERS MOVE IN
MYSTERIOUS WAYS
controls should be consistent no matter what view or mode
is being used
reading and research functionality (cite, link, info, etc.) should
be integrated
Winners: Wellcome Player, Internet Archive
BookReader
23. USABILITY OBSERVATIONS
FUNCTION OVER FORM...
...but form is still important.
maintaining the book feel adds to the users enjoyment of
the interface
Winners: WDL Viewer, Internet Archive BookReader
24. USABILITY OBSERVATIONS
USERS ARE IMPATIENT
the app needs to be fast
any image loading should be clearly communicated
Winners: Diva.js, WDL Viewer
25. USABILITY OBSERVATIONS
MOSTVALUABLE FEATURES
keyword searching
structural navigation
page # input
in-reading research functions (download, link, info, etc.)
Winners: Wellcome Player, Internet Archive
BookReader
30. APPENDIX
ACTIVELY MAINTAINED
ranked by # of commits in the last 12 months
1. Diva.js
2. Mirador 2*
3. Wellcome Player
4. Internet Archive BookReader
5. WDL Viewer
31. APPENDIX
CODE WEIGHT
ranked (lightest to heaviest) by total KB of JS + CSS + images (uncompressed)
1. WDL Viewer
2. Diva.js
3. Internet Archive BookReader
4. Mirador 2*
5. Wellcome Player