Online EPUB reader
Upload an EPUB and read it right in your browser. With the Read Frog extension, each paragraph gets its translation underneath.
- Nothing to install
- Bilingual with the extension
- Opens where you left off
From file to first page in seconds
No app to install and nothing to convert: an EPUB opens as it is.
- 1
Upload an EPUB
Drop it in or choose it from your computer, up to 100 MB. The title, author and cover are read from the book. - 2
Read in your browser
Turn pages or scroll, jump around from the table of contents, and set the theme, text size and spacing. - 3
Translate as you read
With the Read Frog extension, put a translation under each paragraph, or select a word to translate it.
Made for reading in another language
Read Frog's translation works inside the book, the same way it does on web pages.
Bilingual, paragraph by paragraph
Turn on page translation and each paragraph gets its translation right under it. The original stays as it was.
Select to translate
Select a word or a sentence and its translation shows up where it is, without leaving the page.
A page set your way
Pages or scrolling; light, sepia or dark; the text size and line spacing you like. Full screen leaves just the book.
Back where you stopped
Your place is saved as you read, so the book opens at the same page on any device.
Good for these books
Any EPUB without DRM opens. These are what people read most.
Frequently Asked Questions
If you have more questions, please contact us.
Yes. A free account keeps 1 book at a time: when you've finished it, delete it and upload the next. Pro keeps up to 10 books and Ultra up to 80. Translating in the reader costs nothing either, with the free translation services in the extension.
Not to read: the reader runs in your browser on this site, and you only need an account to keep your books. To translate inside a book, add the free Read Frog browser extension.
Open the book here with the Read Frog extension installed and turn on page translation: each paragraph shows its translation under it. You can also select any word or sentence to translate just that. The extension translates with the service you pick, free ones included.
No. The translation shows in the reader as you read, and the file you uploaded stays as it was.
EPUB files up to 100 MB. Books with DRM, which many stores add, can't be opened, and neither can Kindle formats such as MOBI and AZW. For PDFs, use PDF translation.
Yes. Your place is saved to your account as you read, so a book opens where you left it on any device. On a device that has opened the book before, it opens without downloading it again.
Only you. Books are kept in your own library, and deleting one deletes its file and your reading progress with it.
Open an EPUB now
Upload it, and you're reading a few seconds later.
Get the extension to translate