Documents / Reading
EPUB Reader: Read a Book in Your Browser
Open an EPUB 2 or EPUB 3 book, browse its chapters and adjust the text size, spacing and colours. Your book stays on your device.
EPUB Reader: Read a Book in Your Browser: Open an EPUB file and read it in your browser, with its table of contents, previous and next buttons and a progress bar. Change the font size, line spacing and theme (light, sepia or dark), or keep the publisher's own styling, and choose whether to remember your place in this browser. Scripts and remote content in the book are blocked, and DRM-protected books are not opened. Runs 100% locally in your browser with zero server file uploads.
- Category
- PDF tools
- Runs
- In your browser
- Cost
- Free · no sign-up
- Availability
- Ready to use
Runs entirely in your browser
Files never leave your browser. Use the arrow keys or PageUp/PageDown while the reader controls have focus.
EPUB publication format
The W3C EPUB 3.3 Recommendation describes the book package, reading order, navigation and ZIP container. https://www.w3.org/TR/epub-33/
Reading systems
The EPUB Reading Systems 3.3 specification describes how reading systems process publications. This focused reader does not claim full conformance with every feature. https://www.w3.org/TR/epub-rs-33/
How to use it
- Choose an EPUB file up to 100 MB.
- Choose a chapter and adjust the reading theme, font size and line spacing.
- Use the previous and next controls, or turn on position saving to return later.
Privacy & limitations
Files never leave your browser. Remote images and other remote book resources are blocked. A website opens only when you click its link.
Related tools
Frequently asked questions
Which books can I open?
EPUB 2 and EPUB 3 books up to 100 MB, with up to 100 MB of unpacked content. DRM-protected books cannot be opened.
How do chapter and website links work?
Numbered links beside the chapter let you jump to another chapter or open a website in a new tab. Links to a section on the same page also work inside the page.
Can I save my position?
Turn on Remember my position to store the current chapter and selected section in this browser. It is off by default. The progress percentage counts chapters, not printed pages.
Will every book look the same as it does in a dedicated reader?
No. Scripts, interactive content and unsupported artwork are omitted. Obfuscated fonts use a fallback font. This reader is intended for ordinary text-based books.
Free tool · runs in your browser · no account required