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Episteme Reader 1.0.59-oss

A document reader for PDF and E-Books

filecart Android Updated Nov 07, 2026
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FreeFreeware
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About Episteme Reader

Episteme Reader is an offline-first, privacy-focused document and e-book reader that supports PDF, EPUB, MOBI, AZW3, Markdown, HTML, and plain text.

Features:

• Documents: View PDF, Markdown (MD), TXT, and HTML files.

• E-books: Read EPUB, MOBI, and AZW3 files using native parsing.

• PDF Modes: Vertical Scroll and Paginated views.

• Annotations: Draw directly on pages (ink, highlighter, eraser) or add text notes.

• Customization: Adjust font size, margins, and import custom fonts (.ttf, .otf).

• Organization: Built-in library management and Text-to-Speech (TTS) support.

This is a completely free and open-source (OSS) app built natively using Jetpack Compose.

License: AGPL-3.0-only
Release info Update on Nov 07, 2026
Release notes What's New

EPUB reader
• Added EPUB 3 media overlay narration to "Listen".

Read-aloud & Listen
• Added transcript support for media overlay narration in the "Listen" overlay.
• Narration now resumes at the last heard passage instead of restarting from the beginning.
• Voice selections now apply audibly right away, including while playback is paused.
• Listen player opening is now separate from auto-start so it no longer jumps into playback.

Library
• Added "search inside files": full-text search across your whole library, with per-file snippets and an expandable results view.
• Added a sort control to unified shelves.
• Implemented natural sorting for titles and file names (so "Book 2" comes before "Book 10").

Reader appearance
• Added per-book local reader themes.

Office documents
• Added support for legacy DOC files.
• Added native DOCX conversion through the office-oxide bridge.
• Shared the PPTX text indexer and rendering model across platforms.

PDF reader
• Increased the maximum PDF zoom scale to 5000%.
• Opaque PDF ink strokes now keep their true color instead of rendering black.
• Centralized annotation export appearance and opacity so annotations look consistent on export.
• Undo and redo of PDF annotations are now persisted.
• The locked camera per PDF view is kept, so reopening restores it.

Folder sync & data safety
• Fixed annotation data loss caused by sidecar race conditions and empty payloads.
• Folder sidecars now keep being written even when cloud sync is off.
• Hardened bookmark persistence against stale snapshot overwrites.

Localization
• Removed stray zero-width spaces from Dutch, Ukrainian and Belarusian strings.

Stability & performance
• Fixed OOM allocations and added a fallback for a missing WebView.
• Stopped offering the smart dictionary upsell in OSS builds.
• General app stability and performance improvements.
Listing dataF-Droid

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