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PDF to EPUB Converter – Convert PDF to eBook Format Free | ProPDFMaker.com
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PDF to EPUB Converter
Convert PDF to eBook Format

Convert any PDF into a clean, reflowable EPUB3 ebook. Smart heading detection builds your table of contents automatically. Download a fully valid EPUB file — entirely in your browser.

PDF
PDF Document
➔
EPUB3
eBook Format
100%
Free Forever
0s
Server Upload
Auto
TOC Detection
EPUB3
Output Format

PDF to EPUB — Convert Now

Upload your PDF, customize metadata and settings, preview extracted content, then download your EPUB3 ebook.

ℹ️
How it works: PDF.js extracts every text item with font-size data. Lines rendered significantly larger than the body average are tagged as H1/H2/H3 headings and added to the EPUB Table of Contents. Consecutive paragraph lines are merged. The final output is a valid EPUB3 file with OPF package, NCX navigation, cover page, and embedded CSS — ready to open in any ebook reader.
📚 Book Metadata
⚙️ Output & Formatting Settings
📂 Upload PDF File
📄

Drag & Drop PDF file here

or click to browse — never uploaded to any server

✅ PDF Files Only
📋 Pages — Select to Include in EPUB
📖

No PDF loaded yet

Upload a PDF above and click "Load PDF & Extract Content"

📖 EPUB Content Preview
0 words 0 headings 0 chapters
Book Title
Author Name
Cover page will be generated automatically.
Style: Teal gradient
Title and author from the fields above.
📑 Auto-Generated Table of Contents
  • No headings detected yet.
Text Content Preview (first 3 selected pages)
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Why Use This Tool

The Best Free PDF to EPUB Converter

Convert PDFs to clean, reflowable EPUB3 ebooks privately in your browser — with auto TOC, custom cover, and full metadata support.

🔒
100% Private & Secure
Your PDF is processed entirely in your browser using PDF.js and JSZip. It is never uploaded to any server. Complete privacy guaranteed at all times.
📑
Auto Table of Contents
Detected headings are automatically added to both the EPUB3 NAV document and the legacy NCX file, so every ebook reader shows a working clickable TOC with proper chapter navigation.
🎨
Generated Cover Page
A professional cover page is built automatically using your book title and author. Choose from teal gradient, dark, or light/minimal styles — the cover is embedded directly in the EPUB.
🔤
Smart Heading Detection
Font-size analysis identifies H1, H2, and H3 headings from PDF text data. Adjustable sensitivity (1.3× to 2.0×) adapts to any document's typography.
📖
Clean Paragraph Grouping
Text items are grouped into lines by Y-coordinate, then merged into paragraphs by gap analysis — producing clean, readable reflowable ebook text with no word fragmentation.
📋
Full Book Metadata
Set title, author, publisher, language, description, and subject/genre. All metadata is embedded in the OPF package as Dublin Core elements, visible in every ebook management app.
🌐
13 Languages & RTL Support
Set the correct language tag from English to Arabic, Urdu, Chinese, Japanese, and more. RTL language tags ensure correct right-to-left rendering in ebook readers that support it.
🎨
Customizable Typography
Choose body font size (14–20px), line spacing (1.4–2.0), and font stack (serif, sans-serif, system). Settings are embedded as CSS in the EPUB for consistent rendering across all devices.
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Valid EPUB3 + EPUB2 Compat
Output includes EPUB3 NAV XHTML and legacy NCX for EPUB2 compatibility. Opens in Apple Books, Google Play Books, Adobe Digital Editions, Calibre, Kobo, and all major ebook readers.
EPUB3 File Structure

What's Inside Your EPUB File

A valid EPUB is a ZIP archive with a specific folder structure and required files.

File / FolderPurpose
mimetypeFirst file in ZIP (uncompressed): application/epub+zip — required by EPUB spec
META-INF/container.xmlPoints reader to the OPF package file location
OEBPS/content.opfOPF3 package: metadata (title, author, language, UUID), manifest of all files, spine reading order
OEBPS/toc.ncxEPUB2-compatible NCX navigation for older ebook readers (Kindle, older Kobo)
OEBPS/nav.xhtmlEPUB3 NAV document with epub:type="toc" — provides clickable TOC in modern readers
OEBPS/cover.xhtmlSVG-based cover page with title and author; listed first in the spine
OEBPS/styles.cssEmbedded CSS: font-size, line-height, font-family, heading styles, paragraph margins, RTL support
OEBPS/page_NNN.xhtmlOne XHTML content file per selected PDF page with tagged H1/H2/H3 headings and <p> paragraphs
Simple Process

PDF to EPUB in 3 Steps

From PDF upload to a fully valid EPUB3 ebook in under a minute.

1
Upload Your PDF
Drop your PDF onto the tool. PDF.js extracts every text item with font-size and coordinate data. Page thumbnails render live.
2
Set Metadata & Options
Enter book title, author, language, font preferences, heading sensitivity, chapter breaks, and cover style before building.
3
Download EPUB3
Click Download EPUB3. A fully valid ebook file is built in your browser and downloaded instantly. Open in any ebook reader.
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FAQ

PDF to EPUB — Common Questions

What is EPUB3?
EPUB3 is the current standard for ebook files, maintained by the W3C. It uses HTML5, CSS3, and SVG for rich formatting. EPUB3 files open in Apple Books, Google Play Books, Kobo, Adobe Digital Editions, Calibre, and most modern ebook readers.
Will images from the PDF appear in the EPUB?
This tool extracts text content. Embedded images, charts, and figures are not included. The output is a clean reflowable text ebook — ideal for novels, reports, articles, and documents that are primarily text.
Is my PDF uploaded to a server?
No. The PDF is processed entirely in your browser using PDF.js. Your file never leaves your device — complete privacy is guaranteed. No data is collected or stored anywhere.
Can I open the EPUB on a Kindle?
Kindle devices do not natively open EPUB files. However, the Amazon Kindle app for iOS and Android now accepts EPUB directly via Share. For Kindle devices, use Calibre or Amazon's Send to Kindle service to convert the EPUB to AZW3 first.
How does heading detection work?
PDF.js provides the font size for each text item. The tool computes the median body font size across all text. Lines where the font size is ≥ 1.6× the median (configurable) are tagged as headings — H1 for largest, H2 for medium, H3 for smaller headings.
Can I convert a password-protected PDF?
No. Password-encrypted PDFs cannot be read without the correct password. Remove the encryption from your PDF using a PDF editor first, then upload for EPUB conversion.