Bookfolio Reader
In-depth reviewBookfolio Reader is a free browser-based Progressive Web App for reading EPUB, PDF, MOBI, AZW3, and FB2 books. It allows users to read directly in their browser without an account, keeping books stored locally on their device. Features include adjustable text, themes, and reading position memory.

Bookfolio Reader, as it opens in a browser tab.
Not sure how to add Bookfolio Reader to your home screen? Step-by-step for Chrome, Safari, Firefox and Edge — it takes about ten seconds, and there is no app store involved.
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How to install Bookfolio Reader as a PWA
Why we recommend Bookfolio Reader
Bookfolio Reader offers a robust reading experience directly within the browser, with a strong focus on user privacy by keeping books on the device when used as a guest. Its support for multiple ebook formats, including EPUB, PDF, MOBI, AZW3, and FB2, makes it versatile. The PWA nature allows for installation and a standalone experience, enhanced by shortcuts for quick access to the library or for opening new books. Theme options (light, dark, sepia) and adjustable text provide a personalized reading environment. The explicit confirmation of offline functionality, storing books in the browser, is a significant advantage for continuous access.
Best use cases
Best for: Casual readers who want to open and read ebooks without creating an account or uploading files. Ideal for students or professionals needing to quickly access and annotate PDFs and EPUBs from their local device. Excellent for users seeking a privacy-focused reader that keeps their digital library confined to their browser, or for those who need offline access to their books.
Honest limitations
While the core reading functionality is free and account-less, advanced features like syncing libraries across devices require a free Bookfolio account. 'Bookfolio Plus' is mentioned for more cloud storage, indicating a tiered service model. DRM-protected books (like most Kindle purchases) cannot be opened. There is a file size limit of 100 MB per file. The library is lost if browser data is cleared when not signed in.
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Prefer not to install it? Bookfolio Reader on Web Apps Directory covers it as a web app you use straight in the browser.
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