Librera

Versatile eBook reader for every format and reading style

Librera aims to be the one reader to rule them all, and it comes impressively close. This lightweight app (around 14 MB) supports an enormous range of formats: from common standards like PDF, EPUB, MOBI, and DJVU to comics (CBR/CBZ), office documents, and even OPDS catalogs. If you routinely juggle different file types, Librera quickly feels indispensable.

The interface is functional and richly customizable. You can switch between list and grid views, tweak cover sizes, and organize your collection by author, series, genre, or file size. A powerful search makes it easy to find exactly what you want, and you can curate Favorites and Recent lists for quick access. It also lets you treat image-only folders as “books,” which is a nice touch for scans and photo-based documents.

Reading itself is where Librera shines. You can adjust fonts, margins, colors, and backgrounds (solid or textured) and switch between day and night themes, including Substratum-friendly options. Notes and bookmarks work across all supported formats, which is ideal for students and heavy readers. Built‑in text‑to‑speech support lets the app read aloud using whichever engine is installed on your device, turning any compatible file into an instant audiobook.

With over ten million installations and active development, Librera constantly evolves based on user feedback. The trade-off is that the interface can feel dense at first, with so many options packed into a relatively small space, and some complex PDFs or EPUB3 files may not render perfectly.

Still, if you want a free, feature-rich reader capable of handling nearly any document you throw at it, Librera is one of the most versatile and customizable choices available.