EPUB Reader Online — Free In-Browser eBook Viewer | Online Gallery
Read electronic books (.epub) with chapter navigation & scalable text. Read electronic books and publications (.epub) with custom chapter navigation and typography sizing.
What is EPUB Reader and what does it do?
The EPUB Reader Studio turns your web browser into an eBook reader with chapter navigation, custom text scaling, and zero file uploads.
- Read electronic books (.epub) with structured table of contents.
- Scale font sizes dynamically for ergonomic reading.
- Works completely offline with persistent local reading.
How does EPUB Reader work?
Extracts the OPF package file, builds the reading spine, and renders clean XHTML chapters inside a distraction-free viewport.
100% private: all processing happens locally in your browser using client-side WebAssembly, WebCrypto, WebAudio, and HTML5 Canvas. Your files are never uploaded to any server.
Who needs EPUB Reader?
Avid Readers & Researchers
Read digital books and whitepapers on work or public machines.
Supported file formats
EPUB eBook Reader Studio opens and processes the following file extensions directly in your browser:
.epubHow to use EPUB Reader — step by step
- 1
Open eBook
Select any .epub publication from your library.
- 2
Navigate Chapters
Jump between chapters with the chapter dropdown.
- 3
Adjust Reading Style
Scale text size up or down for comfortable reading.
Frequently asked questions
Does this reader support chapters?
Yes, it parses the EPUB OPF package manifest and TOC spine.
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