Open an eBook online, free
You have an EPUB and nothing on your computer opens it. Upload the book here, up to 25 MB, and read it in the browser — page by page, with search and printing.
Drop the file
From your computer or your phone
We render it
On our server, so nothing installs on yours
You read it
And your copy is deleted when you close it
Why an EPUB will not open on its own
Windows ships without an EPUB reader, and the apps that do read one usually want the book imported into a library before they will show you a page.
Drop the book here instead. The chapters render with the publisher's own fonts and images, the table of contents becomes a menu you can jump around with, and the text resizes without breaking the layout. Books up to 25 MB.
Nothing installs and nothing is stored: when you close the book, the file you uploaded is deleted. The reader is a web page rather than an app, so it works the same on a phone as on a laptop.
Reads EPUB
Upload a book up to 25 MB and it opens on this page. No reading app, no account.
Text that resizes
Make the type bigger and the paragraph rewraps to fit. Lines never run off the edge of the screen.
Deleted when you finish
Your upload is removed after viewing, which matters when the book is a manuscript nobody else should see.
Search every chapter
Look for a phrase and the reader finds it across the whole book, not just the page you are on.
Print what you need
Send one chapter or the entire book to a printer with the layout intact.
Works on your phone too
The same page opens in Chrome, Safari, Firefox and Edge, on a laptop or a phone.
An EPUB is not really one file. It is a zip archive holding the chapters as HTML, the cover, the fonts and a table of contents, which is why double-clicking it does nothing on a computer with no reading app installed: the system sees an extension it was never taught. This page unpacks the archive and renders the chapters in order, so you can read the book without installing anything.
Upload a book up to 25 MB. EPUB text reflows, so enlarging it rewraps each paragraph to fit your window instead of pushing the ends of the lines off the screen — that is the difference between a book and a scanned page, and it is why the same file reads well on a phone and on a laptop. Search runs across every chapter, not only the one in front of you, and you can print a single chapter or the whole thing.
Your upload is deleted after viewing, so a draft manuscript or a book you paid for does not sit on a server afterwards. If you need this reader inside software you are building rather than on a page you visit, the same engine ships as the Doconut SDK, which renders 75 file extensions across 18 families on your own machines.
What this reader accepts
EPUB, the open standard almost every publisher and library exports to, up to 25 MB.
EPUB — Electronic Publication
An open format that stores a book as HTML chapters alongside its fonts, images and table of contents. Because the text reflows, one file reads correctly at any window size — which is why it is what most stores and libraries hand you.
Frequently Asked Questions
Didn't find your answer in the FAQ? Contact our sales team
Is it safe to view my eBook document online?
The upload travels over HTTPS, and your eBook file is reachable only through a random identifier your browser holds and nothing links to. It is deleted once you have viewed it, which is the part that matters most.
Does Doconut store uploaded eBook files?
It's important to note that we do not store uploaded eBook files after processing. It gets deleted as soon as it is viewed. You are requested to avoid uploading invalid format, corrupt or infected documents here.
Are there any limits to using Doconut.app to view eBook files?
One eBook file at a time, up to 25MB. That ceiling is set per format, so another viewer here may take more or less than this page does.
Put this reader inside your own software
The engine behind this page ships as the Doconut SDK: 75 file extensions across 18 families, rendered on your own servers, with nothing leaving your network.
Look at the SDK