iloveepubProcessed locally — files never leave your device
Fix EPUB Table of Contents
A missing, duplicated or dead-link table of contents makes a book unnavigable. This tool rebuilds the TOC from the book's actual chapter list — one entry per chapter, in true reading order — and writes it into both the EPUB3 nav document and the EPUB2 NCX, so every reader from Kindle to Calibre picks it up. Runs entirely in your browser; free.
01Select your EPUB
How to fix an EPUB table of contents
Select your EPUB file
Open the book from your device. Its chapters are read locally and listed as a preview of the new TOC.
Review the preview
Check the chapter list — this is exactly what the new table of contents will contain, in reading order.
Download the fixed EPUB
Save the file. Both nav.xhtml and toc.ncx are rebuilt, so any reader shows the working TOC.
Two tables of contents live in every EPUB
EPUB3 books carry nav.xhtml; EPUB2 books carry toc.ncx; many books carry both for compatibility. A reader that finds one broken or empty shows no chapters — or worse, shows entries that lead nowhere.
Rebuilding writes both documents from the same chapter list, in the same order, with the same titles. Whatever your reader reads, it gets a working TOC.
What the rebuilt TOC looks like
One flat entry per chapter in spine order, titled after each chapter's own heading. Deeply nested TOCs with volume/part levels are flattened — that is the trade-off for a TOC that always works everywhere.
Frequently asked questions
Why do EPUB tables of contents break?
Hand editing, buggy exporters and format conversions are the usual suspects: anchors pointing at deleted files, empty nav documents, or an NCX that a converter silently mangled.
What is the new TOC based on?
The book's spine — the authoritative reading order — with each entry titled after the chapter's own heading. If it's in the book, it's in the TOC.
Are nested levels kept?
No — the rebuilt TOC is flat, one entry per chapter. Flat TOCs are the most robust across readers; nesting is a v2 candidate if you ask for it.
Will the chapter files themselves change?
No. Only nav.xhtml and toc.ncx are rewritten. Chapter content, styles and the reading order stay byte-for-byte identical.
Does this also fix a broken print-style TOC page inside the book?
No — a TOC page rendered inside a chapter is regular content. This tool fixes the navigational TOC that readers display in their chapter menu.
Is my book uploaded to a server?
Never. The rebuild runs entirely in your browser — check the network inspector while it works: zero uploads.