Interactive Ebook Creation: Clickable TOC and Embedded Media
Quick Answer: Every ebook should have a clickable table of contents and functional internal links. Beyond that, interactive features are limited by what ebook platforms support. Hyperlinks to websites work on most devices. Embedded audio and video are technically possible in EPUB 3 but supported inconsistently across platforms. Amazon's Kindle format strips most multimedia elements during conversion.
Interactivity in ebooks is more constrained than most authors expect. The web runs JavaScript and streams video. Ebook readers run lightweight rendering engines designed for text. Understanding what's possible (and what isn't) saves time and prevents frustration.
Clickable Table of Contents
A clickable table of contents (TOC) is the most important interactive element in any ebook. It lets readers jump directly to any chapter, and on most platforms, it powers the navigation menu that readers access through their device's interface.
Amazon KDP requires a working TOC for most ebook categories. Apple Books, Kobo, and Google Play all expect one. An ebook without a clickable TOC feels broken to readers who are used to tapping a chapter title and arriving there instantly.
How to create one. Every major formatting tool (Atticus, Vellum, Lacuna, Reedsy Book Editor, Kindle Create) generates a clickable TOC automatically from your chapter headings. This is why using proper heading styles in your manuscript matters: the TOC is built from those heading tags. If you manually format chapter titles without using heading styles, the auto-generated TOC will be empty or incomplete.
Two types of TOC. Most ebooks include both an HTML TOC (a page in the book with clickable chapter titles) and an NCX/navigation TOC (a metadata structure that powers the device's built-in navigation menu). Formatting tools generate both. If you're building your EPUB manually, make sure both are present.
Internal Links and Cross-references
Internal links let you connect related sections within the book. "See Chapter 7 for more on this topic" becomes a tappable link that takes the reader directly to Chapter 7. These work reliably across all platforms and add significant usability to non-fiction ebooks with cross-referenced content.
Where to use them. Link the introduction's chapter previews to the actual chapters. Link back-of-book resources or appendices from the main text where they're referenced. In non-fiction, link related concepts across chapters. In fiction, a "characters" or "glossary" section with links back to first appearances can help readers of complex narratives.
How to create them. Formatting tools handle internal links through their link features. In Atticus and Vellum, you select text, choose "link," and point it to a chapter heading or bookmarked location. In raw EPUB, internal links use standard HTML anchor tags.
External Hyperlinks
Links to websites, resources, and external content work in ebooks on any device with an internet connection. Tapping a hyperlink in an ebook opens the device's web browser.
External links are useful for directing readers to your website, additional resources, companion downloads, or product pages. They're also used for calls to action: "Leave a review on Amazon" with a direct link to your book's review page, or "Join my email list" with a link to your sign-up page.
Limitations. E-ink Kindle devices have limited web browsers, so complex websites may not display well. Links don't work when the reader is offline. And links can break if the destination URL changes. Use stable URLs (your own domain, platform-specific product links) rather than temporary ones.
Embedded Audio and Video
EPUB 3 supports embedded audio and video files. In practice, this support is spotty.
Apple Books supports embedded audio and video in EPUB 3 ebooks on iOS and macOS devices. This is the most reliable platform for multimedia ebook content.
Kindle does not support embedded audio or video in standard KDP ebook uploads. Amazon strips multimedia elements during conversion. Enhanced Kindle features exist but are limited to select publishers and Amazon's own production tools.
Kobo and Google Play have partial EPUB 3 multimedia support, but it varies by device and app version.
For most self-published ebook authors, embedded multimedia is not practical. A more reliable approach is to link to externally hosted content: "Watch the tutorial video at [URL]" or "Listen to the audio companion at [URL]." This works on every device and doesn't inflate your ebook file size.
What Good Interactive Design Looks Like vs What Does Not
Works well: - Every chapter is accessible through a clickable table of contents. The TOC appears both as a page in the book and in the device's navigation menu. - Cross-references in non-fiction link to the relevant chapters, making the book easy to navigate. Back-of-book resources link to their mentions in the main text. - External links point to stable, author-controlled URLs. Calls to action (review links, email sign-up) are clearly labeled and functional.
Red flags: - No clickable table of contents. This is the most basic interactive requirement, and missing it makes the book feel unprofessional and difficult to navigate. - Embedded video or audio that only works on one platform. Readers on other devices get a broken element or an error. - External links that use URL shorteners or tracking redirects that ebook platforms flag as suspicious. Use direct, clean URLs.
The Takeaway
Focus on the interactive elements that work reliably everywhere: a clickable table of contents, internal cross-reference links, and external hyperlinks to your website and resources. Skip embedded audio and video unless you're publishing exclusively through Apple Books, where support is consistent. For the full formatting process, see the Ebook Formatting and Conversion guide.
Q: Can you embed video in an ebook? A: Technically yes (EPUB 3 supports it), but in practice the support is too inconsistent for most authors to rely on. Apple Books handles embedded video well. Amazon Kindle does not. The more reliable approach is to link to externally hosted video. See Can You Embed Video in an Ebook?
Q: Do ebooks need a table of contents? A: Yes. Amazon KDP requires a functional clickable TOC for most ebook categories. Even where it's not strictly required, a TOC is a basic usability feature that readers expect. Every major formatting tool generates one automatically from your chapter headings.