The Rules

The quality reference list for digital book

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The Rules

The linearization of tables used for layout does not adversely affect content management

Rule 077

Downloading file language is specified when it differs from the original page language

Rule 049

The file size proposed for download is specified.

Rule 048

Every language change is reported.

Rule 038

Advertising or sponsored content is identified as such

Rule 008

Capital letters are accentuated

Rule 080

Each link is assigned a title in the source code.

Renewal no. 039

Scientific formulas are provided in the appropriate markup language (MathML, ChemML, etc.)

Rule 081

Data tables are not replaced with images.

Rule 078

Data tables are not simulated using formatted text.

Rule 079

The hardness of empty or audio content is indicated.

Rule 029

Videos have synced subtitles

Rule 028

Content is not assigned only by its shape or screen position

Rule 059

The content and meaning of each page are not altered when the styles are disabled

058

Content files meet the weight limit of the oldest playback systems

Rule 087

Numeric book contains EPUB2 compatibilities when necessary

Rule 086

Of the available information about the book, the sense or sense to mobilize to view the content integrity is or are indicated

Rule 083

Of the available information about the book, title, author or author, publishing house, cover, language and source are indicated

Rule 085

Of the information available about the book, the presence of non-textual content and the available alternative are indicated

Rule 084

Source book pagination is reproduced appropriately

Rule 082