9. OEBPS/ Content
• Contains all viewable documents
(XHTML & .jpg) and stylesheets (CSS)
• Contains the .opf file
• Contains the . ncx file (replaced in
EPUB3 with a simplified toc.html file,
but only for EPUB3 devices)
14. Finishing the File
• Once all files are created they and added to
the appropriate files, you will need to rezip
the files.
• Every file but the mimetype gets zipped
(mimetype must be read first).
• You can do this through the command line/
terminal, script, or through an Epub
program like Calibre.
• Once zipped, you need to validate.
15. Validation
• Like all mark-up languages, EPUB needs to
be validated.
• It will pick up errors in ncx opf and html
files.
• It will alert missing or miscapitalized files.
• Use EPUB Check available from Google
code or Safari.