I Built a Free PDF to EPUB Converter (Because Smallpdf Charges for That)

I needed to convert a PDF manuscript to EPUB format so I could read it on my e-reader. You know the drill — open Smallpdf, upload the file, convert.

Except my file was 80 pages. And Smallpdf was telling me I'd used my 2 free conversions for the day. So I'd have to wait until tomorrow for the next batch.

And somewhere between "upload" and "download," my unpublished manuscript was sitting on a stranger's server.

That shouldn't be the default.

So I built something better.

PDF to EPUB Converter is a free, client-side tool that runs entirely in your browser. No uploads. No accounts. No subscriptions. $0/month, forever.

What it does:

• Upload any PDF (drag & drop or click to browse)
• Preview every page as a thumbnail
• Set your book's title, author, and language
• Add custom chapter titles per page — or use one-chapter mode
• Download a valid EPUB 3 file with navigation

Everything happens locally using pdf.js and JSZip. Your files never leave your device. The whole thing is a single HTML file with no server component.

Why this matters

Most online PDF tools follow the same playbook: free for one or two tasks, then pay up. Smallpdf wants $12/month for unlimited conversions. Others charge per-use. And somewhere between "upload" and "download," your documents are sitting on a remote server.

For unpublished manuscripts — the kind of thing authors are most protective about — that's a dealbreaker. Why hand your life's work to a conversion tool that can't be trusted?

This tool solves all three issues at once: it's free, private, and works offline after the first load.

The result

A valid EPUB 3 file that opens in Calibre, Apple Books, Google Play Books, Kindle Previewer, or any standard e-reader. With proper navigation, your title, author, and chapters all intact. No watermarks, no limits, no paywall.

Open and use it

No signup, no install, no tricks. Just open the tool, upload your PDF, and go.

Try the free PDF to EPUB Converter

Built because converting a PDF to EPUB shouldn't cost money or your privacy.