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A focused, local-first ebook reader for Windows and macOS.
Native Rust rendering, no WebView, and your library stays under your control.
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Torto is an open-source desktop reader for people who want their books to stay on their own computer. It combines a native bookshelf, flexible reading layouts, search and annotation tools, translation, an optional AI reading assistant, and direct WebDAV sync.
Unlike browser-based readers, Torto parses, lays out, paginates, and renders book content through a native Rust pipeline built on egui, Parley, Vello, and wgpu.
| Feature | Description | Status |
|---|---|---|
| Multi-format support | Read DRM-free EPUB, MOBI, AZW, AZW3/KF8, FB2, FBZ, CBZ, CHM, and PDF files. | ✅ |
| Native rendering | Parse, lay out, paginate, and render books with Rust instead of embedding a browser or WebView. | ✅ |
| Page and scroll modes | Switch between single-page, two-page, and chapter-based vertical scrolling layouts. | ✅ |
| Library management | Import books in bulk, display metadata and covers, search by title or author, and detect duplicates. | ✅ |
| Navigation and search | Use a hierarchical table of contents, chapter tracking, full-book search, keyboard navigation, mouse-wheel paging, and F11 fullscreen. |
✅ |
| Typography and themes | Customize reading and interface fonts, font sizes, weight, layout, and Light or Dark themes. | ✅ |
| Selection and annotations | Select freely or by word, sentence, or paragraph; copy text, create highlights and notes, and return to durable source locations. | ✅ |
| Image preview | Open book images in an overlay, zoom with the wheel, pan when enlarged, and copy images to the clipboard. | ✅ |
| Translation | Translate book content in replacement or bilingual mode and translate the table of contents. | ✅ |
| AI reading assistant | Ask about the current book with source-backed citations and render Markdown, math, SVG, and Mermaid responses. | ✅ Optional |
| WebDAV sync | Sync books, reading progress, highlights, and notes directly through your own WebDAV provider. | ✅ Optional |
| Windows updates | Check GitHub Releases automatically, verify the MSI with SHA-256, and install updates after confirmation. | ✅ Windows |
Import books, browse covers, search by title or author, and continue where you left off.
Keep the table of contents, reading surface, translation tools, and AI assistant close without letting them take over the page.
Download the latest build from GitHub Releases.
| Platform | Package | Requirements |
|---|---|---|
| Windows | Torto-*-x86_64.msi |
64-bit Windows 10 or 11 |
| macOS, Apple silicon | Torto-*-macos-arm64.dmg |
macOS 12 or later |
| macOS, Intel | Torto-*-macos-x86_64.dmg |
macOS 12 or later |
After installation, import one or more books from the bookshelf. Use ← / → or the mouse wheel to navigate, Ctrl + F to search the current book, and the reader menu to change layout, theme, translation, AI, and sync settings.
- Imported books and reading data remain in Torto's local application-data directory.
- WebDAV passwords and AI API keys are stored in the operating system's secure credential store rather than ordinary configuration files.
- AI and translation features are opt-in. Content is sent only when you configure and actively use a provider.
- WebDAV traffic goes directly from Torto to the service you choose; there is no Torto-operated relay.
Torto uses Rust 1.97.1. The workspace package remains named rebook-desktop, while the shipped application is Torto (torto.exe on Windows).
cargo run --locked -p rebook-desktop
cargo fmt --all --check
cargo clippy --workspace --all-targets --all-features -- -D warnings
cargo test --workspaceThe core reading path is parser → Reading IR → layout → renderer. See the native rendering architecture decision, WebDAV sync protocol, and known upstream issues for details.
Torto is under active development. DRM-protected books are not supported. The native renderer intentionally does not aim for full browser-level HTML/CSS compatibility, so complex fixed layouts, vertical writing, Ruby annotations, and some interactive book content may not render completely yet.
Please report reproducible problems in Issues. Include the book format, screenshots, and reproduction steps, but do not upload complete copyrighted books.
Torto is available under the MIT License.