Accessibility: Standards and Best Practices
A Primer for Publishers
Since its introduction in 2012, EPUB3 has become a standard for the publishing industry.
Questions for Conversion Suppliers
The answer from desLIbris to every question is "yes."
At this link, NNELS provides a summary of best practice guidelines for publishers.
This table shows how desLibris helps to address them.
*The Alt-text (ATAR) Process
Descriptions of images are an essential part of the Accessible EPUB3, especially where images are vital to the content.
Best practice recommends that the alt-text be supplied by someone familiar with the content (editor, publisher or author.) Ideally these descriptions are created and supplied with the source files delivered for conversion.
If Alt-text image descriptions are not available or supplied with the source file when an order is placed, the conversion price will include the "ATAR Service." These are items 2, 4 and 5 on the price list.
These options include the delivery of an Alt-text Assessment Report (ATAR) which is generated as a by-product of the conversion process.
A placeholder or dummy alt-text marker is inserted in the EPUB file for all tables and images requiring Alt-text. These markers are included in the ATAR Template, which is an Excel file described below.
The resulting EPUB file, described as "Enhanced," meets all Accessible standards with the exception of the alt-text. content.
The next step (creation of alt-text) is the responsibility of the publisher. The alt-text content may be composed/created by the publisher or another party.
Best practice requires that every distinct format for a given title should bear a unique ISBN. Print, paperback, PDF, EPUB2 and EPUB3 are distinct formats.
While most digital book distributors do not require a format-specific ISBN, it is definitely in the publisher's best interest to assign these to all books in its catalogue so that all supply chain links point only to the source.
Accessible EPUB created by desLibris includes these metadata enhancements:
|Onix records are modified to include data from CodeList 196 where applicable to the book.||Accessible EPUB also includes an OPF file with these components:|