AnyTool
Your files never leave your device. All processing happens locally in your browser.

How do I convert an EPUB e-book to a PDF?

Drop an EPUB onto AnyTool EPUB to PDF and it reflows the book into a clean, paginated PDF right in your browser. JSZip unzips the e-book and the engine reads META-INF/container.xml to find the OPF package document, then parses its metadata (title, author, language), manifest and spine to recover the exact reading order. Each chapter’s XHTML is flattened into structured blocks — headings, paragraphs, bulleted and numbered lists, blockquotes, code and raster images — and pdf-lib lays them out onto pages: text is word-wrapped using real font metrics and paginated, headings are sized and spaced, lists get a hanging indent, and JPEG/PNG images are embedded and scaled to fit. You can choose A4 or Letter and the body font size, and optionally add a title page, page numbers and a clickable chapter outline. Everything runs locally with JSZip and pdf-lib bundled into the app — no upload, no CDN, no server — so your e-book never leaves your device, and the .pdf opens in any reader, browser, phone or e-reader.

  • Recovers reading order from the EPUB spine (container.xml → OPF → spine)
  • Reflows headings, paragraphs, lists, quotes, code and JPEG/PNG images
  • pdf-lib word-wrap + pagination; title page, page numbers, chapter outline
  • Choose A4 or Letter and the body font size
  • 100% client-side — JSZip + pdf-lib, no CDN, no upload, works offline

What is

EPUB to PDF Conversion

EPUB-to-PDF conversion takes a reflowable EPUB e-book — a ZIP of XHTML, CSS and packaging files (META-INF/container.xml, an OPF package with metadata, a manifest and a spine, and a nav/NCX table of contents) — and re-typesets its content as a fixed, paginated PDF. The converter reads the spine to get the reading order, flattens each chapter’s XHTML into structured text and images, and lays it out onto pages with word-wrap and pagination. Because PDF is a fixed-layout format, the result is a clean reflow of the book’s text and raster images rather than a pixel-perfect rendering of the EPUB’s CSS; custom fonts, exact styling, multi-column layouts, tables and vector/SVG·WebP·GIF images are simplified or skipped, and DRM-encrypted EPUBs cannot be read at all.

Converters

Related terms

EPUBPDFpdf-libJSZipOPFSpineDRM

Frequently Asked Questions

Nothing is uploaded. The EPUB is unzipped and the PDF built entirely in your browser with JSZip and pdf-lib, so it never leaves your device.

AnyTool EPUB to PDF is 100% client-side. When you choose an EPUB, your browser unzips it with JSZip, parses the package document and lays out the PDF with pdf-lib on your own machine — both libraries are bundled into the app rather than fetched from a CDN. No file is sent to any server, there is no account or tracking, and the tool keeps working offline after the first load, which makes it safe for personal or licensed e-books you simply want to read or print as a PDF.

Yes. It reads the EPUB’s spine to recover the exact reading order and starts each chapter on a fresh page, optionally with a clickable outline.

An EPUB stores its reading order in the OPF package document’s spine — an ordered list of itemref entries that point at chapter documents in the manifest. The converter reads META-INF/container.xml to locate the OPF, then walks the spine so chapters appear in the right sequence. Each chapter begins on a new page, the title/author/language are pulled from the metadata, and if you enable the chapter outline a clickable PDF bookmark tree is built from the chapter titles so readers can jump between chapters.

Headings, lists, blockquotes, code and JPEG/PNG images carry over. It is a clean reflow of text and raster images, not a pixel-perfect CSS render.

Each chapter’s XHTML is flattened into structured blocks — headings (sized by level), paragraphs, bulleted and numbered lists with a hanging indent, blockquotes, monospace code and images — and pdf-lib word-wraps and paginates them. JPEG and PNG images are embedded and scaled to fit the page. Because PDF is fixed-layout and pdf-lib uses the standard fonts, the output is a clean reflow rather than a pixel-perfect copy of the e-book’s CSS: custom fonts, exact styling, multi-column layouts and tables are simplified, and vector/SVG, WebP and GIF images cannot be embedded and are skipped (with a warning).

No. A DRM-encrypted EPUB has encrypted content that cannot be read in the browser. The tool detects it and tells you, and it does not remove DRM.

If an EPUB is protected by DRM, its chapter files are encrypted and an encryption.xml manifest is present. The converter detects this up front, distinguishes harmless font obfuscation from real content encryption, and clearly states that DRM-protected e-books cannot be converted — removing DRM is outside the scope of this tool. For normal, unencrypted EPUBs (including those you authored or bought DRM-free) the conversion is fast and the PDF is clean.

Detailed Explanation

Methodology

How the EPUB to PDF Converter Works

AnyTool EPUB to PDF reads an e-book entirely in the browser with JSZip and builds the PDF with pdf-lib, both bundled into the app and served from the same origin — never loaded from a CDN — so the tool stays fully offline-capable and uploads nothing. An EPUB is a ZIP of XHTML, CSS and packaging files, so the engine first reads META-INF/container.xml to locate the OPF package document, then parses it with DOMParser: the <metadata> yields the title, creator (author) and language; the <manifest> maps every resource id to its href and media-type; and the <spine> gives the linear reading order as a sequence of itemref → idref entries, with hrefs resolved relative to the OPF folder. Each spine document (an XHTML chapter) is parsed and flattened into an ordered block list — headings (h1–h6), paragraphs, bulleted and numbered list items, blockquotes, preformatted code, horizontal rules and images — with scripts and styles stripped, HTML entities decoded and whitespace normalized. <img> sources are resolved against the manifest, the bytes pulled from the ZIP, and JPEG/PNG images embedded. pdf-lib then lays the blocks onto pages: standard fonts (Helvetica, bold, oblique and Courier for code) are embedded, text is word-wrapped to the content width using font.widthOfTextAtSize and advanced by a line height, and a new page is started when the cursor passes the bottom margin. Headings are sized by level, lists get a hanging indent, blockquotes a left bar, images are scaled to fit, and an optional title page, footer page numbers and a clickable chapter outline are added.

  • EPUB unzipped with JSZip; PDF built with pdf-lib — both bundled, no CDN
  • Reading order recovered from container.xml → OPF → spine (itemref/idref)
  • XHTML flattened to headings, paragraphs, lists, quotes, code and images
  • Word-wrap via font.widthOfTextAtSize with line-height pagination
  • JPEG/PNG images embedded (embedJpg/embedPng) and scaled to fit
How It Works

Layout Options and Output

The conversion is configurable. You can choose the page geometry (A4 or US Letter) and the base body font size, from which headings scale up. A title page can be generated from the e-book’s title and author; page numbers can be stamped in the footer of every content page; and a clickable PDF outline (bookmarks) can be built from the chapter titles so readers can jump between chapters. After conversion the tool surfaces the metadata it detected (title, author, language) and reports the chapter count, page count, word count, embedded-image count and the PDF file size, listing every chapter with its block and image counts so you can verify the structure before downloading. Each chapter begins on a fresh page for a clean book feel, and the resulting .pdf opens in any PDF reader, web browser, phone or e-reader.

  • Page size A4 or Letter; adjustable base body font size
  • Optional title page from the e-book metadata
  • Optional footer page numbers and a clickable chapter outline
  • Detected title/author/language shown; per-chapter block & image counts
  • Chapter count, page count, word count and file size reported
Privacy & Security

Privacy and Honest Limitations

Because all unzipping and PDF assembly run in the browser with bundled libraries, the EPUB is never uploaded, there is no account or tracking, and the converter works offline after first load. The honest caveat is that this is a clean reflow of the e-book’s text and raster images into paginated PDF, not a pixel-perfect rendering of the EPUB’s CSS: the standard PDF fonts are used, so custom fonts, exact styling, multi-column layouts and tables are simplified, and pdf-lib can only embed JPEG and PNG, so vector/SVG, WebP and GIF images are skipped with a warning. DRM-encrypted EPUBs cannot be read at all — when an encryption.xml manifest indicates real content encryption (as opposed to harmless font obfuscation), the tool detects it up front and clearly states that the protected e-book cannot be converted and that removing DRM is outside its scope.

EPUB to PDF: in-browser (AnyTool) vs typical online converters
CapabilityAnyToolTypical alternatives
ProcessingRuns in your browserUsually uploaded to a server
PrivacyE-book never leaves your deviceFile sent to a third party
LibrariesJSZip + pdf-lib bundled locally — no CDNOften a remote service
Reading orderRecovered from the EPUB spineVaries; sometimes scrambled
StructureHeadings, lists, quotes, code preservedOften flattened to plain text
ImagesJPEG/PNG embedded and scaledSometimes dropped
NavigationOptional title page, page numbers, outlineUsually none
DRM EPUBsDetected and clearly refusedSilent failure or empty PDF
Works offlineYes (PWA)No
Cost / signupFree, no signupOften gated or ad-heavy

AnyTool unzips the EPUB locally with JSZip, recovers the reading order from its spine, flattens each XHTML chapter into structured blocks and lays them out with pdf-lib, uploading nothing; it is a text-and-image reflow, so custom fonts, exact CSS, columns, tables and SVG/WebP/GIF images are simplified or skipped and DRM e-books are refused, all surfaced through honest warnings.