Convert a PDF into a Reflowable EPUB E-book
or drop files here
Turn fixed pages into an e-book whose text resizes and rewraps on any reader. The PDF is analysed by pdf.js in this tab and the EPUB is assembled right next to it, so the document never takes a trip to anyone's server.
Fixed pages in, flowing book out.
Add the PDF
Drop in a PDF with real text, the kind you can highlight in a viewer. If the file is locked, type its password when asked and the conversion carries on.
Check the book details
Title and author are filled in from the PDF where possible. Choose a cover, keep or drop pictures, and limit the pages if you only want part of it.
Convert and save
The pages are read, untangled and packaged as an EPUB. The summary tells you how many chapters and pictures went in before you save it.
When a page is the wrong shape.
A PDF page is drawn for paper of one size. On a phone or e-reader that means zooming and scrolling sideways, which an EPUB simply avoids.
Long reports on an e-reader
A 120-page annual report is a chore to pinch and zoom on a six-inch screen. As an EPUB it wraps to the device and you turn pages with one tap.
Two-column research papers
Journal articles printed in two columns are read down the left column and then the right, so the paper flows as one readable stream on a phone.
Bigger text, your font
Readers with low vision or dyslexia can set the size, spacing and typeface they need in their reading app, which a fixed PDF page never allows.
A first e-book draft
Authors with a print-ready PDF can get a quick EPUB to test on their own devices before committing to a full e-book production.
Manuals for offline reading
Product guides and handbooks turn into books you can keep in an e-reader library, searchable and readable without a signal.
One chapter for the commute
Use the page range to pull a single chapter of a textbook into its own small e-book, without the index, appendices and blank pages.
Rebuilding a book from loose lines
A typical PDF does not know it contains paragraphs. It stores instructions like "draw these characters at this spot in this font", and nothing says which line is a heading, where a column ends or that the number at the bottom is a page number. To make an e-book, that structure has to be worked out again from the geometry.
The converter gathers every line with its position, size and real font name (which reveals bold and italic), plus where each picture and drawn ruling line sits. The most common text size becomes the body. Anything repeated at the top or bottom of most pages is treated as page furniture and dropped. On pages with a clear gutter, the left column is read before the right. Consecutive lines with the same size, indent and spacing merge into paragraphs, and a word broken by a hyphen at a line end is put back together.
The rebuilt document is then handed to Pandoc, which writes an EPUB3 with a navigable table of contents, a new chapter at each top-level heading and your title, author and optional cover in the book metadata.
Where it struggles: magazines with sidebars and pull quotes, three-column newsletters, forms, slide decks saved as PDF, and pages where text wraps around pictures. Those reflow imperfectly. Reports, papers, manuals and plain books come out well.
| On the PDF page | In the EPUB |
|---|---|
| Running heads, footers, page numbers | Removed when they repeat across pages |
| Two text columns | Read left column first, then right |
| Words hyphenated at a line end | Joined back into one word |
| Larger type | Headings, up to three levels by size |
| Short bold line at body size | A minor heading |
| Bullets and numbered items | Real lists |
| Ruled or neatly aligned grids | Tables |
| Lines in a monospaced font | Code blocks, spacing kept |
| Photos and figures | Cut out of the page as JPEGs |
| Sideways margin text | Left out |
| Fonts and colours | Replaced by the reader’s settings |
Questions answered.
Will it work on a scanned PDF?
How are the chapters decided?
Why did a pull quote turn into a heading?
What happens to pictures and charts?
Where do the title, author and cover come from?
What about footnotes and page references?
Which e-readers can open the result?
Is the PDF uploaded to make the e-book?
More tools you might need.
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