Thread: Kobo Bug thread
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Old 03-29-2014, 05:25 AM   #434
bobb40
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Posts: 28
Karma: 274
Join Date: Jul 2011
Device: Kindle3, Kindle4, KoboGlo
EPUB SVG Faults [Kobo Incident: 140220-000183]

With the demise of the Sony reader, and the unavailability and uncertainty of the Nook, Kobo readers have become the leading eink devices for reading EPUBs.

The Kobo specification page for the Glo (https://www.kobo.com/koboglo/techspecs/) proclaims:

Quote:
OPEN Read almost any eBook on your Kobo Glo. Supports ePub and Adobe DRM

File Types EPUB, PDF, JPEG, GIF, PNG, TIFF, TXT, (X)HTML, RTF, CBZ, CBR
The Kobo devices are listed by Wikipedia and other references as capable of reading EPUB.

But the spec for EPUB 2.0.1 (http://idpf.org/epub/201) and OPS (http://www.idpf.org/epub/20/spec/OPS_2.0.1_draft.htm), clearly states "OPS Reading Systems must support SVG [except animation and scripting features]". And "rotate" and "dy" are among the basic attributes of SVG. So if SVG's "rotate" and "dy" are not supported, EPUB is not supported.

Attached is a bare-minimum EPUB "KoboGlo Bug Demo" which passes epubcheck:

- dogmatix:fix> /usr/local/bin/run_epubcheck kgbd.epub
- Epubcheck Version 3.0.1
-
- Validating against EPUB version 2.0
- No errors or warnings detected.

This EPUB demonstrates SVG's "rotate" and "dy". It is a simple test case for post 418 on this forum. It displays normally on most EPUB readers, but demonstrates faults of KoboGlo.
Attached Files
File Type: epub kgbd.epub (4.8 KB, 185 views)

Last edited by bobb40; 03-30-2014 at 11:48 AM. Reason: added explanation ("...test case...") suggested by davidfor
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