EPUB → HTML
Flatten an EPUB into a single, readable HTML page — every chapter in order, markup intact, opens in any browser.
Drop your EPUB
or click to choose — the only ceiling is your own memory, none on our side
This is the least lossy conversion on the site, and the reason is structural: an EPUB is already a collection of XHTML documents. Unzip one and you find chapter files with real headings, paragraphs, lists and tables, a stylesheet, and a manifest naming the reading order. Nothing needs translating between formats — the chapters only need to be read in the right order and joined together.
So what comes out is the publisher's own markup, chapter by chapter, in one file. Tables stay tables, nested lists stay nested, and inline emphasis survives exactly as it was authored. Each chapter becomes a section with its own id, so anchors and deep links still work inside the document.
People use this to paste a book into a CMS, to search a whole text in a browser without an ebook reader, to inspect what a publisher actually did to a file, or as a staging step towards something else — an HTML file is the easiest possible input for whatever comes next.
Format by format
| What it does | EPUB | HTML |
|---|---|---|
| What it is | A zip of XHTML documents plus a manifest | One HTML document |
| Markup | XHTML, strictly well-formed | HTML, as your browser wants it |
| Chapter order | Stated by the OPF spine | The order they were joined in, with anchors |
| Stylesheet | The publisher's own CSS | A plain readable default |
| Opens in | An ebook reader | Any browser, any device, no app |
| Fidelity of this conversion | — | The highest on this site |
What actually changes
An EPUB is a zip full of XHTML. This tool reads those documents in spine order and concatenates them into one file, which is why almost nothing is lost. What changes is the presentation, not the markup.
What survives
What does not
How it works
Read locally by this page; the metadata appears immediately.
Each becomes a section with its own id, so anchors and deep links still work.
Open it in any browser, or paste it into a CMS.
FAQ
Because no format translation happens. EPUB chapters are already XHTML documents, so reading them and putting them in one file preserves the markup as the publisher wrote it. Every other conversion on this site has to map one structure onto another and lose something in the process.
Not in this file — image tags keep pointing at their original paths inside the archive, so they will not resolve once the HTML is on its own. Embedding them as data URIs is the next step for this engine.
No. The publisher's stylesheet is replaced with a plain readable default, because keeping it would also mean extracting the fonts it references and rewriting every path. What you get is comfortable to read rather than a facsimile.
Yes — the HTML to EPUB tool on this site takes it, and splits chapters on whichever heading level you choose. Round-tripping this way is a reasonable method for bulk-editing a book in a text editor.
One file, with every chapter inside it as its own section. That is what makes it searchable in a browser with a single Ctrl+F.
Links between chapters become anchors within the single document, so most of them keep working. Links to external sites are untouched.
DualBook translates the whole book and hands back an EPUB you can export the same way.
