Readest — Modern Cross-Platform Ebook Reader

Introduction

Readest is an open-source ebook reader that combines a clean, modern interface with powerful reading tools. Built with Tauri and Next.js, it runs natively on macOS, Windows, Linux, iOS, and Android while keeping resource usage low compared to Electron-based alternatives.

What Readest Does

• Opens EPUB and PDF files with high-fidelity rendering
• Syncs reading progress and annotations across devices
• Provides customizable typography, themes, and layout options
• Supports text-to-speech for hands-free reading
• Offers OPDS catalog browsing for discovering free ebooks

Architecture Overview

Readest uses Tauri v2 for the native shell, with a Next.js frontend handling the UI. The EPUB rendering engine processes documents client-side for privacy. Cloud sync is optional and uses end-to-end encryption. The architecture keeps the binary small and memory-efficient compared to Electron-based readers.

Self-Hosting & Configuration

• Download pre-built binaries from GitHub releases for desktop and mobile
• Build from source with pnpm and Rust toolchain installed
• Configure sync via the built-in cloud service or disable it for offline use
• Customize reading themes and font settings through the preferences panel
• Import ebook libraries from local directories or OPDS feeds

Key Features

• Native performance with Tauri (not Electron) — small binary, low memory
• Cross-platform: macOS, Windows, Linux, iOS, Android, and web
• Built-in TTS (text-to-speech) engine
• OPDS support for browsing free ebook catalogs
• Annotation, highlighting, and bookmark sync

Comparison with Similar Tools

• Calibre — powerful library management; Readest focuses on the reading experience
• KOReader — e-ink optimized; Readest targets desktop and mobile screens
• Foliate — Linux only; Readest runs on all major platforms
• Apple Books — proprietary; Readest is open-source and cross-platform

FAQ

Q: What file formats does it support? A: EPUB and PDF are fully supported, with more formats planned.

Q: Is cloud sync required? A: No, Readest works fully offline. Cloud sync is optional for cross-device use.

Q: Does it support DRM-protected books? A: No, it reads DRM-free EPUB and PDF files only.

Q: How does it compare in size to Electron apps? A: Tauri-based builds are significantly smaller and use less RAM than Electron alternatives.

Sources

• https://github.com/readest/readest
• https://readest.com