--- source_url: "https://github.com/readest/readest?utm_source=openai" title: "GitHub - readest/readest: Readest is a modern, feature-rich ebook reader designed for avid readers offering seamless cross-platform access, powerful tools, and an intuitive interface to elevate your reading experience. · GitHub" mirrored_at: 2026-08-19T01:03:20.468Z host: github.com cited_in_42a: true mirror_canonical: "https://index.42a.ai/github.com/readest/readest__q__utm_source_openai" --- > **Original source:** https://github.com/readest/readest?utm_source=openai [Features](#features) • [Planned Features](#planned-features) • [Screenshots](#screenshots) • [Downloads](#downloads) • [Documentation](#documentation) • [Getting Started](#getting-started) • [Troubleshooting](#troubleshooting) • [Support](#support) • [License](#license) ## Features ✅ Implemented **Feature** **Description** **Status** **Multi-Format Support** Support EPUB, PDF, MOBI, KF8 (AZW3), FB2, CBZ, TXT, MD (Markdown) ✅ **Scroll/Page View Modes** Switch between scrolling or paginated reading modes. ✅ **Full-Text Search** Search inside a book or across the current library shelf to find relevant sections. ✅ **Annotations and Highlighting** Add highlights, bookmarks, and notes to enhance your reading experience and use instant mode for quicker interactions. ✅ **Dictionary/Wikipedia Lookup** Look up words with built-in sources or import local packs, including Yomitan ZIP/RDICT, from Settings → Custom Dictionaries. ✅ **[Parallel Read](https://readest.com/#parallel-read)** Read two books or documents simultaneously in a split-screen view. ✅ **Customize Font and Layout** Adjust font, layout, theme mode, and theme colors for a personalized experience. ✅ **Code Syntax Highlighting** Read software manuals with rich coloring of code examples. ✅ **File Association and Open With** Quickly open files in Readest in your file browser with one-click. ✅ **Library Management** Organize, sort, and manage your entire ebook library. ✅ **OPDS/Calibre Integration** Integrate OPDS/Calibre to access online libraries and catalogs. ✅ **Translate with DeepL and Yandex** From a single sentence to the entire book—translate instantly. ✅ **Text-to-Speech (TTS) Support** Enjoy smooth, multilingual narration—even within a single book. ✅ [**Read-Along Narration**](https://github.com/readest/readest/blob/main/apps/readest-app/docs/read-along-narration.md) Play embedded EPUB 3 Media Overlays with timed highlighting, or pair a reflowable EPUB locally with DRM-free MP3, M4A, or M4B narration. [Storyteller](https://storyteller-platform.dev/) remains an option for generating phrase-aligned EPUBs. ✅ **Sync across Platforms** Synchronize book files, reading progress, notes, and bookmarks across all supported platforms. ✅ [**Sync with Koreader**](https://github.com/readest/readest/wiki/Sync-with-Koreader-devices) Synchronize reading progress, notes, and bookmarks with [Koreader](https://github.com/koreader/koreader) devices. ✅ **Accessibility** Provides full keyboard navigation and support for screen readers such as VoiceOver, TalkBack, NVDA, and Orca. ✅ **Visual & Focus Aids** Reading ruler, paragraph-by-paragraph reading mode, and speed reading features. ✅ ## Planned Features 🛠 Building 🔄 Planned **Feature** **Description** **Priority** **AI-Powered Summarization** Generate summaries of books or chapters using AI for quick insights. 🛠 **Advanced Reading Stats** Track reading time, pages read, and more for detailed insights. 🛠 **Audiobook Support** Extend functionality to play and manage audiobooks. 🔄 **Handwriting Annotations** Add support for handwriting annotations using a pen on compatible devices. 🔄 Stay tuned for continuous improvements and updates! Contributions and suggestions are always welcome—let's build the ultimate reading experience together. 😊 ## Screenshots * * * ## Downloads ### Mobile Apps      ### Platform-Specific Downloads - macOS / iOS / iPadOS : Search and install **Readest** on the [App Store](https://apps.apple.com/app/apple-store/id6738622779?pt=127463130&ct=github&mt=8), _also_ available on TestFlight for beta test (send your Apple ID to [readestapp@gmail.com](mailto:readestapp@gmail.com) to request access). - Windows / Linux / Android: Visit and download **Readest** at [https://readest.com](https://readest.com/?utm_source=github&utm_medium=referral&utm_campaign=readme) or the [Releases on GitHub](https://github.com/readest/readest/releases). - Linux users can also install [Readest on Flathub](https://flathub.org/en/apps/com.bilingify.readest). - Web: Visit and use **Readest for Web** at [https://web.readest.com](https://web.readest.com/). #### Nix Note The Nix package supports `x86_64-linux` only. nix-darwin is not supported. Try it without installing. `--accept-flake-config` opts in to the project's binary cache; without it Nix builds the whole Rust/Tauri stack from source. nix run --accept-flake-config github:readest/readest To install it, add the input to your `flake.nix`: inputs.readest.url \= "github:readest/readest"; then in `configuration.nix` add the package and the cache. The cache is needed here as well because a flake input's own `nixConfig` does not apply to your system build: environment.systemPackages \= \[ inputs.readest.packages.${pkgs.stdenv.hostPlatform.system}.default \]; nix.settings \= { substituters \= \[ "https://readest.cachix.org" \]; trusted-public-keys \= \[ "readest.cachix.org-1:KvKAePcZZCZB8ytFIAOGdgN3VRdmFHGRMHqMVckbt5c=" \]; }; ## Documentation Guides, tutorials, and FAQs for installing and using Readest live in the official documentation: 📖 **[https://readest.com/docs](https://readest.com/docs)** Contributor references live in the repository: [architecture](https://github.com/readest/readest/blob/main/apps/readest-app/docs/architecture.md), [code layout](https://github.com/readest/readest/blob/main/apps/readest-app/docs/code-layout.md), and [testing](https://github.com/readest/readest/blob/main/apps/readest-app/docs/testing.md). ## Building from Source To build Readest from the latest commit, see [Getting Started](https://github.com/readest/readest/blob/main/CONTRIBUTING.md#getting-started). ## Troubleshooting ### 1\. Readest Won’t Launch on Windows (Missing Edge WebView2 Runtime) **Symptom** - When you double-click readest.exe, nothing happens. No window appears, and Task Manager does not show the process. - This can affect both the standard installer and the portable version. **Cause** - Microsoft Edge WebView2 Runtime is either missing, outdated, or improperly installed on your system. Readest depends on WebView2 to render the interface on Windows. **How to Fix** 1. Check if WebView2 is installed - Open “Add or Remove Programs” (a.k.a. Apps & features) on Windows. Look for “Microsoft Edge WebView2 Runtime.” 2. Install or Update WebView2 - Download the WebView2 Runtime directly from Microsoft: [link](https://developer.microsoft.com/en-us/microsoft-edge/webview2?form=MA13LH). - If you prefer an offline installer, download the offline package and run it as an Administrator. 3. Re-run Readest - After installing/updating WebView2, launch readest.exe again. - If you still encounter problems, reboot your PC and try again. **Additional Tips** - If reinstalling once doesn’t work, uninstall Edge WebView2 completely, then reinstall it with Administrator privileges. - Verify your Windows installation has the latest updates from Microsoft. **Still Stuck?** - See Issue [readest/readest#358](https://github.com/readest/readest/issues/358) for further details, or head over to our [Discord](https://discord.gg/gntyVNk3BJ) server and open a support discussion with detailed logs of your environment and the steps you’ve taken. ### 2\. AppImage Launches but Only Shows a Taskbar Icon On some Arch Linux systems—especially those using Wayland—the Readest AppImage may briefly show an icon in the taskbar and then exit without opening a window. You might see logs such as: ``` Could not create default EGL display: EGL_BAD_PARAMETER. Aborting... ``` This behavior is usually caused by compatibility issues between the bundled AppImage libraries and the system’s EGL / Wayland environment. **Workaround 1: Launch with LD\_PRELOAD (recommended)** You can preload the system Wayland client library before launching the AppImage: ``` LD_PRELOAD=/usr/lib/libwayland-client.so /path/to/Readest.AppImage ``` This workaround has been confirmed to resolve the issue on affected systems. **Workaround 2: Use the Flatpak Version** If you prefer a more reliable out-of-the-box experience on Arch Linux, consider using the [Flatpak build on Flathub](https://flathub.org/en/apps/com.bilingify.readest) instead. The Flatpak runtime helps avoid system library mismatches and tends to behave more consistently across different Wayland and X11 setups. ## Contributors Readest is open-source, and contributions are welcome! Feel free to open issues, suggest features, or submit pull requests. Please **review our [contributing guidelines](https://github.com/readest/readest/blob/main/CONTRIBUTING.md) and [Code of Conduct](https://github.com/readest/readest/blob/main/CODE_OF_CONDUCT.md) before you start**. We also welcome you to join our [Discord](https://discord.gg/gntyVNk3BJ) community for either support or contributing guidance. ## Support If Readest has been useful to you, consider supporting its development at [donate.readest.com](https://donate.readest.com/), where you'll find all available donation methods, including GitHub Sponsors, card payments, and crypto. Your contribution helps us fix bugs faster, improve performance, and keep building great features. ### Sponsors ## License Readest is free software: you can redistribute it and/or modify it under the terms of the [GNU Affero General Public License](https://www.gnu.org/licenses/agpl-3.0.html) as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. See the [LICENSE](https://github.com/readest/readest/blob/main/LICENSE) file for details. The following libraries and frameworks are used in this software: - [foliate-js](https://github.com/johnfactotum/foliate-js), which is MIT licensed. - [zip.js](https://github.com/gildas-lormeau/zip.js), which is licensed under the BSD-3-Clause license. - [fflate](https://github.com/101arrowz/fflate), which is MIT licensed. - [PDF.js](https://github.com/mozilla/pdf.js), which is licensed under Apache License 2.0. - [daisyUI](https://github.com/saadeghi/daisyui), which is MIT licensed. - [marked](https://github.com/markedjs/marked), which is MIT licensed. - [next.js](https://github.com/vercel/next.js), which is MIT licensed. - [react-icons](https://github.com/react-icons/react-icons), which has various open-source licenses. - [react](https://github.com/facebook/react), which is MIT licensed. - [tauri](https://github.com/tauri-apps/tauri), which is MIT licensed. The following fonts are utilized in this software, either bundled within the application or provided through web fonts: [Bitter](https://fonts.google.com/specimen/Bitter), [Fira Code](https://fonts.google.com/specimen/Fira+Code), [Inter](https://fonts.google.com/specimen/Inter), [Literata](https://fonts.google.com/specimen/Literata), [Merriweather](https://fonts.google.com/specimen/Merriweather), [Noto Sans](https://fonts.google.com/specimen/Noto+Sans), [Roboto](https://fonts.google.com/specimen/Roboto), [LXGW WenKai](https://github.com/lxgw/LxgwWenKai), [MiSans](https://hyperos.mi.com/font/en/), [Source Han](https://github.com/adobe-fonts/source-han-sans/), [WenQuanYi Micro Hei](http://wenq.org/wqy2/) We would also like to thank the [Web Chinese Fonts Plan](https://chinese-font.netlify.app/) for offering open-source tools that enable the use of Chinese fonts on the web. * * * Happy reading with Readest!