DAISY Online Delivery

Specification for the DAISY Online Delivery Protocol

The DAISY Online Delivery protocol is a web service Application Programming Interface (API) that facilitates the delivery of digital content from service providers to end users.

Version 2 of the protocol introduces:

  • Improvements in communication to support low bandwidth connections (e.g. mobile cellular data)
  • Remote reading system configuration
  • Support for packaged and partially packaged content (including EPUB 3)
  • Clarification and optimization of functions for greater consistency
  • Many more enhancements

A more detailed list of the new features can be found on the development Wiki: https://github.com/daisy/DAISY-Online-Refresh/wiki/New-Features.

The DAISY Online Delivery Protocol Version 2 was approved by the Board in June 2015, and the current version of the specification Version 2.0.2 was published in November 2015. A supporting Guidance document has also been published to assist people implementing the specification.

Use case examples:


The DAISY Online Delivery Protocol Version 1 reached Recommendation Status by the DAISY Consortium in 2010. It was developed by the DAISY Online Working Group operating under the DAISY Online Delivery Project Charter.

Project files

Last updates to this page: February 15th, 2017