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Convert PDF documents to EPUB ebook format for better reading on e-readers and mobile devices.

By ChangeThisFile Team · Last updated: March 2026

Quick Answer

ChangeThisFile converts PDF to EPUB using Calibre on a secure server. Upload your document, and it is converted with metadata and formatting preserved for optimal e-reader compatibility and reflowable text. Files are auto-deleted after processing. Completely free with no signup required.

First daily conversion free No signup required Encrypted transfer · Async jobs kept up to 24h Queued when needed Updated May 2026

PDF vs EPUB: Format Comparison

Key differences between the two formats

Feature	PDF	EPUB
Layout	Fixed layout	Reflowable text
Text resizing	No (zoom only)	Yes, adaptive
Device compatibility	Universal	E-readers, tablets, phones
File size	Often larger	Typically smaller
Accessibility	Limited	Excellent (screen readers)
Reading experience	Print-like	Optimized for digital reading
Metadata support	Basic	Rich (author, series, etc.)
Text selection	Sometimes difficult	Easy and precise

When to Convert

Common scenarios where this conversion is useful

E-reader optimization

Convert PDF books and documents to EPUB for better reading experience on Kindle, Kobo, and other e-readers.

Mobile reading

Transform PDF documents to EPUB for comfortable reading on smartphones and tablets with adjustable text size.

Accessibility improvement

Convert PDF files to EPUB format for better screen reader compatibility and accessibility features.

Digital library management

Convert PDF book collections to EPUB for organized digital libraries with proper metadata and covers.

Academic paper reading

Transform PDF research papers to EPUB for easier annotation and reading on academic e-reader apps.

Who Uses This Conversion

Tailored guidance for different workflows

Authors

Convert PDF manuscripts to EPUB for publishing on Amazon Kindle, Apple Books, or Kobo
Transform PDF drafts to EPUB for sending advance review copies to beta readers

Check chapter headings and table of contents navigation after converting to EPUB

Test the converted EPUB file on the actual e-reader device to verify layout and formatting

Publishers

Convert PDF titles to EPUB for distributing across multiple ebook retail platforms simultaneously
Transform PDF backlist titles to EPUB to make older catalogs available in modern formats

Verify cover image and metadata (title, author, ISBN) after converting to EPUB

Batch convert using consistent settings to maintain uniform quality across your entire catalog

Readers

Convert PDF ebooks to EPUB for reading on your preferred e-reader device or app
Transform PDF books to EPUB to consolidate your library into a single compatible format

After converting to EPUB, verify that bookmarks and highlights from the PDF version are preserved

Choose EPUB settings that match your e-reader's native format for the best reading experience

How to Convert PDF to EPUB

1

Upload your PDF file

Drag and drop your PDF file onto the converter, or click browse. The file is uploaded over an encrypted connection.
2

Server-side conversion

The server converts your PDF to EPUB using Calibre. This typically takes a few seconds.
3

Download the EPUB

Save your converted file. The server copy is automatically deleted after processing.

Developers: convert via API →

Frequently Asked Questions

Is the PDF to EPUB conversion free?

Yes, completely free. Convert PDF to EPUB with no cost, no signup, and no watermarks.

What happens to my uploaded PDF file?

Files are automatically deleted immediately after conversion. Nothing is stored or retained on our servers.

Will formatting be preserved?

Calibre preserves text content and basic formatting, but complex layouts may be simplified for better reflowable text.

Can I convert scanned PDFs?

Yes, but scanned PDFs (images) may not convert text accurately. Text-based PDFs work best for EPUB conversion.

Will images be included?

Yes, images embedded in the PDF are preserved and included in the EPUB output.

Is metadata preserved?

Basic PDF metadata like title and author are transferred to the EPUB. Additional metadata can be edited in e-reader apps.

Will the EPUB work on Kindle?

EPUB files work on most e-readers. For Kindle specifically, you may need to convert EPUB to AZW3 or use Kindle's email service.

How does text reflow work?

EPUB allows text to adjust to screen size and user preferences, unlike PDF's fixed layout. This improves readability on small screens.

Can I convert password-protected PDFs?

Password-protected PDFs cannot be converted. Remove password protection first, then upload for conversion.

What is the maximum file size?

Files up to 50 MB are supported for free conversion.

Will hyperlinks be preserved?

Yes, hyperlinks within the PDF are typically preserved as clickable links in the EPUB output.

How long does conversion take?

Conversion time depends on PDF size and complexity. Most documents convert within seconds to a few minutes.

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Need to convert programmatically?

Use the ChangeThisFile API to convert PDF to EPUB in your app or script. Free tier included.

View API & Pricing

Read our guides on file formats and conversion

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