Android · PDF & EPUB reader

Read in peace.

revpdf is a minimalist reader that keeps the page in front and the controls out of the way. Highlights, reader themes, zoom and search — entirely offline.

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Free · No ads · No account required

The Alignment Engine

The framework lets a model create a tree of possibilities. At each step it generates, evaluates and searches — much closer to how people actually think.

It can abandon low-scoring branches and backtrack to a more promising one, navigating the tree efficiently.

Reinforcement Learning from Human Feedback became the industry’s standard method for this task, shaping responses to be helpful, honest and safe.

Everything you need, nothing you don’t

A reader that respects your attention and your data.

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PDF & EPUB, done right

Open PDFs and reflowable EPUBs in one quiet reader. Continuous scroll or page-by-page — your choice.

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Highlight in any color

Long-press to select, then mark passages with a full palette of highlight colors that stay readable on every theme.

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Four reading themes

Light, Sepia, Twilight and Dark — applied to the page only, independent of the app’s own theme. Twilight even tints PDFs.

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Zoom & typography

Pinch to zoom anywhere. For EPUB, tune font, size, weight, spacing, margins and alignment to taste.

Select to search

Highlight a word and search it instantly in a built-in sheet — Google, DuckDuckGo, Yandex or Yahoo, your pick.

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Private by design

Everything stays on your device. No accounts, no servers, no tracking. Your library is yours alone.

Bring your library along.

Import a PDF or EPUB and start reading in seconds. No sign-up, no upload.

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