Use images only for pictures, not for tables or textĪny content embedded in an image is not available to visually impaired readers. Use the EPUB 3 Structural Semantics Vocabulary as defined at () to identify content. A section tag for the table of contents would look like or a list of definitions in a glossary would be tagged with. Include semantic information to describe the content of a tag. Use the most specific tag available and do not automatically wrap or tags around everything. Specific tags are for specific content only (i.e., the tag is only for citations) and should be used according to the standard. For example, the tag that contains the preface of a book might look like. For other tagged structures, specify their content with the epub:type attribute. Create meaningful structure wherever possibleĬreate a structure by using numbered headings in a logical structure. This is particularly important for academic, educational, and other complex texts. Use and tags in the content and the tag in the manifest file to define a logical reading order. Include a complete table of contents in the front matter and consider smaller tables of contents at the start of each section. The meaning of the content should be the same both with and without any styles or formatting applied. Do not use tables or pictures of text to control the appearance of the content. Do not use visual-only cues such as colored text, font size or positioning as the only clue to the meaning or importance of a word or section. Visual reading is only one way of accessing content. Use structural markup to define the natural reading order of the primary narrative and to distinguish secondary material such as footnotes, references, figures, and other auxiliary content. Text must not be presented as images, be reordered by CSS, or require scripting to be accessed. Top Tips for Creating Accessible EPUB 3 Files All text must be available in a logical reading order
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