Publishing WG Telco, 2019-01-28: Packaging

See minutes online for a more detailed record of the discussions.

New draft version

The group agreed to officially publish a new version of the WP draft, reflecting the scope updates. A request for TAG review should follow.


A lingering issue has been the packaging format to use for audio books and other profiles. Issue #390 has collected the immediate criteria, and there were also presentation (at a meeting in NYC) about alternatives like HEIF or the work initiated by Google on Web Packaging. The fact that ISO is working on a lightweight version of ZIP (very close to OCF), namely ISO/IEC 21320-1:2015 came to the fore, too. After some discussions the WG decision is:

PWG will adopt a light-weight version of Zip, based on ISO/IEC 21320-1:2015, with some restrictions and additions for WP.

A version of this document (based on a current Github PR) will be created as a draft soon.

It must be emphasized that this packaging is considered to be a “Light-weight” packaging format (the title is still to be decided), and it may not be appropriate for all publication formats; if and when available, the group will consider adopting more complex packaging formats, too, possibly better adapted to the very Web specific requirements.

About Ivan Herman

Ivan Herman is the Technical Lead for Publishing@W3C. For more details, see

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