EPUB3 Pop-up Footnotes Amendment (2 eBooks)

Job ID: 40395986

Budget: €8 – €30 EUR

Expert eBook Developer: Convert Inline Endnotes to EPUB3 Pop-up Footnotes (2 Files)

Project Description
I need a professional eBook developer to modify two (2) EPUB files (EPUB 3.0 standard). Currently, these books have endnotes placed as plain text immediately following the paragraphs. I want them converted into semantic pop-up footnotes that work on all major modern e-readers.

Technical Requirements & Workflow:

Semantic Tagging: You must use the <aside epub:type="footnote"> tag for the note content and the epub:type="noteref" attribute for the links in the body text.

Namespace Declaration: Ensure the xmlns:epub="http://www.idpf.org/2007/ops" namespace is correctly declared in all XHTML files.

Cross-Platform Compatibility: The notes must appear as pop-ups on Apple Books (iBooks), Kindle (using KF8 features), and Kobo, while maintaining a functional back-and-forth hyperlink fallback for older devices.

Validation: The final files must pass EpubCheck 5.0+ with zero errors or warnings.

Style Preservation: The original CSS, fonts, and layout of the books must remain untouched. Only the note structure needs modification.

Specific File Info:

The source files are already in EPUB 3 format.

The notes are currently located within the main content files (e.g., ESG_it_e-book_v1.xhtml).

Confidentiality & Non-Disclosure (CRITICAL)
This project contains proprietary and sensitive material. By bidding, you agree to:

Absolute Confidentiality: No part of the content may be shared with third parties or used for AI training.

No Redistribution: Redistribution of the provided material is strictly prohibited.

Data Destruction: You must delete all copies of the source and final files from your systems once the project is completed and paid.

Skills Required
Advanced eBook Formatting (EPUB 3)

XHTML / CSS3

Kindle Create / Kindle Previewer expertise

Strict adherence to Data Privacy