PDF to EPUB Converter

A PDF keeps its pages fixed, which makes it tiring to read on a phone or e-reader: you zoom and scroll sideways on every line. An EPUB re-flows the text to the screen and lets the reader change the font size. This converter reads the text of a PDF, rebuilds paragraphs, headings and lists, keeps the pictures, makes chapters from the PDF's bookmarks and writes a standard EPUB 3 book with a table of contents and a cover. It works in your browser.

How to use this tool

1. Choose a PDF that contains real text (not a scan).
2. Pick how chapters are made: from the bookmarks, every N pages, or one chapter.
3. Choose whether to include pictures, use page 1 as the cover and remove page numbers and running headers.
4. Optionally type the title and author, then download the EPUB.

Formula

Text pieces on the same baseline form a line; a new paragraph starts when the font size changes, the gap to the previous line is more than 1.75 lines, the line is indented, a list marker begins it, or the previous line ended a sentence well short of the margin. Lines are joined with spaces, and a word split with a hyphen at the end of a line is rejoined.

The body size is the font size used for most characters. Paragraphs at least 15% larger become headings (largest = level 1), and short lines that are entirely bold become small headings. Short lines repeated at the top or bottom of most pages are treated as running headers.

Example

A 120-page novel PDF with 24 bookmarks becomes an EPUB with 24 chapters titled from the bookmarks, plus a cover made from page 1. Without bookmarks and with N = 10, the same file gives 12 chapters named "Pages 1–10", "Pages 11–20" and so on, unless a heading at the start of a chapter supplies a better title.