Ecodesign

If the digital book establishes one or more standards or references, a link is offered to each of them.

Rule 021

Images have a useful and reasonable size and resolution.

Rule 025

The included objects are provided with an appropriate fallback alternative.

Rule 026

Style sheets are minified

Rule 067

Advertising or sponsored content is identified as such

Rule 008

Content files meet the weight limit of the oldest playback systems

Rule 087

Numeric book contains EPUB2 compatibilities when necessary

Rule 086

The scripts are minified.

Rule 068