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Glossary

What is page-progression-direction (RTL books)?

Updated:

page-progression-direction is an attribute of the EPUB spine (ltr, rtl or default) that tells the reader in which direction pages turn. Arabic, Hebrew and Persian books use rtl, and so do Japanese books set vertically.

Why it matters when you convert a PDF to EPUB

A right-to-left PDF also has its lines and columns ordered right to left, so the converter must keep the reading order, set dc:language and the dir attribute, and declare the page direction, or the book opens from the wrong end.

Related terms

EPUBCheck messages about this

  • CSS-001 The "…" property must not be included in an EPUB Style Sheet.

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FAQ

What is page-progression-direction (RTL books)?

page-progression-direction is an attribute of the EPUB spine (ltr, rtl or default) that tells the reader in which direction pages turn. Arabic, Hebrew and Persian books use rtl, and so do Japanese books set vertically.