How to convert EPUB to PDF
A few tools do this conversion, each with a catch: an email delivery, a size cap, or an app to install. Here is a browser one with none of those: nothing is emailed, and the limit is your device’s memory (phones hold less).
Why convert an EPUB to PDF at all
An EPUB reflows to fit whatever screen it is on, which is ideal for reading, but that same flexibility makes it print inconsistently and awkward to annotate with a fixed page reference. A PDF fixes the layout in place, which is what a printer, a professor grading page numbers, or an annotation tool that expects stable pages actually needs.
With Calibre
Calibre, the free desktop ebook manager, converts EPUB to PDF with the most control over margins, fonts and page size, but it is a full application to install and learn, which is a lot for a single conversion.
Web converters
Sites like CloudConvert and various "epub to pdf" converters handle the format but usually cap the free file size or the number of conversions per day, and a few older ones ask for an email address to send the result to rather than downloading it directly.
Converting without installing anything or giving an email
Stayput's EPUB to PDF tool unzips and lays out the book directly in the browser: chapters start on new pages, with page numbers and a contents page, in a choice of page size for reading (A5) or printing (A4 or Letter) at home. It works only on DRM-free EPUBs, the kind from Project Gutenberg, Standard Ebooks and many small publishers; a book bought from a store that locks its files cannot be converted by any tool without breaking that lock, which is illegal in many countries. Going the other way, PDF to EPUB turns a PDF into a reflowable ebook for a Kindle, phone or e-reader, though it works on the text alone and drops pictures and tables, since an EPUB made from a PDF is built for reading the words on a small screen.
Questions
Can I convert an EPUB to PDF for free without an email?
Yes. A browser-based converter, like Stayput's EPUB to PDF, downloads the result directly with no email required and no server involved.
Does converting EPUB to PDF keep the pictures?
EPUB to PDF keeps pictures, since it is laying the same book out with fixed pages. Converting the other way, PDF to EPUB, drops pictures and tables because it extracts the text for reflow.
Can I convert a book I bought from an ebook store?
Only if it is DRM-free. Most store-bought ebooks are locked, and removing that lock is illegal in many places, so no legitimate converter, including this one, can convert them.
Why would I convert a PDF to EPUB instead of just reading the PDF?
A PDF has fixed pages, which are tiny or require panning around on a phone or e-reader; an EPUB reflows the text to fit the screen instead.