Fix EPUB TOC Online

Clean, normalize, and export EPUB navigation files (NCX or nav.xhtml) in seconds. No installs, no uploads, just fast on-device processing optimized for editors and digital publishers.

Input TOC Source

Drop toc.ncx or nav.xhtml, or paste raw markup

Drag & drop your TOC file here

Supports .ncx, .xhtml, .html, and .xml

Cleanup Options

Normalize hierarchical numbering (auto 1.1, 1.2, etc.) Trim whitespace and collapse multiple spaces Convert headings to smart title case Remove duplicate entries and anchors Rewrite relative anchors consistently (lowercase, hyphenated)

Cleaned Table of Contents

Review, copy, export, or share

0 entries 0 levels detected 0 duplicates removed

Shareable permalink (unique feature: restore full state instantly)

Instant Markdown preview

About Fix EPUB TOC Online

Fix EPUB TOC Online gives editors, conversion specialists, and indie authors a fast way to clean navigation files without firing up heavyweight desktop suites. The tool runs entirely in your browser, keeping manuscripts private and performance snappy even on slow connections.

We benchmarked the most-mentioned alternatives across forums and publisher communities and saw recurring gaps around duplicate anchors, export options, and intrusive ads. This experience solves those pain points with semantic markup, real-time validation, and an exclusive shareable permalink so collaborators can review the exact same state instantly.

How to Use the Tool

Drop a toc.ncx or nav.xhtml file into the upload card or paste the markup into the editor. Choose the cleanup toggles you need, then select “Clean TOC” to parse the document, normalize numbering, and remove duplicates. The summary bar reports total entries, nesting depth, and duplicate removals so you know the outline is stable.

After reviewing the output, copy the sanitized HTML, grab a Markdown outline for editorial review, download the Markdown file for documentation, or generate a permalink that restores the exact same state later.

Tips for Better EPUB Navigation

Use these quick wins to keep navigation accessible and retailer-friendly.

Keep hierarchies to three levels or fewer to avoid warning flags on major stores.
Toggle smart title case, then double-check branded terms to preserve styling.
Regenerate the permalink after any spine edits so collaborators compare the right draft.

FAQs

Does the tool support both toc.ncx and nav.xhtml?

Yes—format detection happens automatically, so you can clean legacy toc.ncx files and modern nav.xhtml documents with the same workflow.

Will my files be uploaded to a server?

No. Everything runs locally in your browser, protecting sensitive manuscripts and keeping feedback instant.

Can I restore the same settings later?

Use the Generate Permalink button to copy a shareable link that reloads your input, options, and cleaned output.

How do I share the outline with my editor?

Copy the Markdown outline or download the Markdown file, then drop it into your editorial brief, project board, or repository.

Read Also