# Koodo Reader changelog

> An open-source ebook reader for every major format.

- Vendor: Koodo Reader
- Category: Productivity
- Platforms: Desktop
- Official site: https://www.koodoreader.com
- Tracked by: What's New (https://whatsnew.fyi/product/koodo-reader)
- Harvested from: GitHub (koodo-reader/koodo-reader)
- Entries below: 10 (newest first)

What's New is an index, not a publisher: every entry below links to the vendor's own release notes, which are the authoritative source. Entries are labelled where they are hand-curated sample data, pre-releases, or drawn from a secondary source such as a developer blog.

## Releases

### v2.4.3 — 2.4.3

- Date: 2026-08-01
- Version: v2.4.3
- Original notes: https://github.com/koodo-reader/koodo-reader/releases/tag/v2.4.3
- Permalink: https://whatsnew.fyi/product/koodo-reader/releases/v2.4.3
- Labels: Platforms: Desktop

- **changed** — Custom AI models now retain approximately 5 messages by default to prevent context from growing indefinitely
- **changed** — Keyboard shortcut for creating a note changed to Ctrl + Enter
- **changed** — Optimize trigger area for buttons around the book
- **added** — Browser extension now listed in Chrome Web Store and Edge Addons Store
- **added** — Android version now listed in Google Play Store
- **fixed** — Fixed issue where backup files from 1.7.4 stable release could not be restored
- **fixed** — Fixed issue where PDF reading progress was lost in 1.7.4 stable release
- **fixed** — Fixed issue where book list was not displayed after upgrading from 1.7.4 stable release
- **fixed** — Fixed compatibility issues with Minimax audiobook plugin
- **fixed** — Fixed UI issue on TTS voice page on mobile

##### New Features
- The context length for custom AI models now retains approximately 5 messages by default to prevent the context from growing indefinitely
- The keyboard shortcut for creating a note has been changed to Ctrl + Enter
- Optimize the trigger area for the buttons around the book
- Browser extension is now listed in the Chrome Web Store and Edge Addons Store
- (Mobile) The context length for custom AI models now retains approximately 5 messages by default to prevent the context from growing indefinitely
-  (Mobile) Android version is now listed in the Google Play Store

##### Fixes
- Fixed an issue where backup files from the 1.7.4 stable release could not be restored
- Fixed an issue where PDF reading progress was lost in the 1.7.4 stable release
- Fixed an issue where the book list was not displayed after upgrading from the 1.7.4 stable release
- Fixed compatibility issues with the Minimax audiobook plugin
- (Mobile) Fixed a UI issue on the TTS voice page

> [!NOTE]
> This version has been selected as the stable release candidate. It should work fine in most cases. If you have any concerns, please download the [previous stable version](https://github.com/koodo-reader/koodo-reader/releases/tag/v1.7.4)

> [!TIP]
> You can also download the installation package for this version from the [our self-hosted mirror](https://dl.koodoreader.com/latest.html).

##### 新增
- 自定义 AI 模型上下文长度默认保留近5条消息，防止上下文长度无限增加
- 创建笔记的快捷键改为 Ctrl + Enter
- 优化阅读器边缘按钮的触发方式
- 浏览器扩展上架 Chrome 和 Edge 应用商店
- （移动版）自定义 AI 模型上下文长度默认保留近5条消息，防止上下文长度无限增加
- （移动版）安卓版上架 Google Play 商店

##### 修复
- 修复 1.7.4 稳定版的备份文件无法恢复的问题
- 修复 1.7.4 稳定版的 PDF 阅读进度丢失问题
- 修复 1.7.4 稳定版升级之后图书列表不展示的问题
- 修复 Minimax 听书插件的适配问题
- （移动版）修复听书语音页面的UI问题


> [!NOTE]
> 此版本由于功能已经稳定，bug也基本修复，被选为下个稳定版候选。如果您对此有任何顾虑，可以下载上一个[稳定版](https://github.com/koodo-reader/koodo-reader/releases/tag/v1.7.4).  

> [!TIP]
> 我们还提供了高速下载镜像，您也可以从 [自托管镜像](https://dl.koodoreader.com/latest.html) 下载此版本的安装包

### v2.4.2 — 2.4.2

- Date: 2026-07-20
- Version: v2.4.2
- Original notes: https://github.com/koodo-reader/koodo-reader/releases/tag/v2.4.2
- Permalink: https://whatsnew.fyi/product/koodo-reader/releases/v2.4.2
- Labels: Platforms: Desktop

- **added** — Custom AI models now retain approximately 5 messages by default to prevent the context from growing indefinitely
- **fixed** — Fixed an issue where backup files from the 1.7.4 stable release could not be restored
- **fixed** — Fixed an issue where PDF reading progress was lost in the 1.7.4 stable release
- **fixed** — Fixed an issue where the book list was not displayed after upgrading from the 1.7.4 stable release
- **fixed** — Fixed compatibility issues with the Minimax audiobook plugin
- **fixed** — Fixed a UI issue on the TTS voice page on mobile

##### New Features
- The context length for custom AI models now retains approximately 5 messages by default to prevent the context from growing indefinitely
- (Mobile) The context length for custom AI models now retains approximately 5 messages by default to prevent the context from growing indefinitely

##### Fixes
- Fixed an issue where backup files from the 1.7.4 stable release could not be restored
- Fixed an issue where PDF reading progress was lost in the 1.7.4 stable release
- Fixed an issue where the book list was not displayed after upgrading from the 1.7.4 stable release
- Fixed compatibility issues with the Minimax audiobook plugin
- (Mobile) Fixed a UI issue on the TTS voice page

> [!NOTE]
> This version has been selected as the stable release candidate. It should work fine in most cases. If you have any concerns, please download the [previous stable version](https://github.com/koodo-reader/koodo-reader/releases/tag/v1.7.4)

> [!TIP]
> You can also download the installation package for this version from the [our self-hosted mirror](https://dl.koodoreader.com/latest.html).

##### 新增
- 自定义 AI 模型上下文长度默认保留近5条消息，防止上下文长度无限增加
- （移动版）自定义 AI 模型上下文长度默认保留近5条消息，防止上下文长度无限增加

##### 修复
- 修复 1.7.4 稳定版的备份文件无法恢复的问题
- 修复 1.7.4 稳定版的 PDF 阅读进度丢失问题
- 修复 1.7.4 稳定版升级之后图书列表不展示的问题
- 修复 Minimax 听书插件的适配问题
- （移动版）修复听书语音页面的UI问题


> [!NOTE]
> 此版本由于功能已经稳定，bug也基本修复，被选为下个稳定版候选。如果您对此有任何顾虑，可以下载上一个[稳定版](https://github.com/koodo-reader/koodo-reader/releases/tag/v1.7.4).  

> [!TIP]
> 我们还提供了高速下载镜像，您也可以从 [自托管镜像](https://dl.koodoreader.com/latest.html) 下载此版本的安装包

### v2.4.1 — 2.4.1

- Date: 2026-07-15
- Version: v2.4.1
- Original notes: https://github.com/koodo-reader/koodo-reader/releases/tag/v2.4.1
- Permalink: https://whatsnew.fyi/product/koodo-reader/releases/v2.4.1
- Labels: Platforms: Desktop

- **added** — Add accurate mode for official AI OCR that preserves PDF formatting and images
- **added** — Windows and macOS now support using the system's built-in OCR engine for text recognition
- **added** — Scanned PDFs now support the highlighting feature
- **added** — Local folders are now available as a sync data source for cross-platform data synchronization
- **added** — Notes can now be saved by pressing the Enter key
- **changed** — Menu buttons near the edge are now hidden by default and appear on mouse proximity
- **added** — Add an option to hide the sync progress bar during synchronization in Settings > Sync & Backup
- **changed** — Mobile sync progress bar is automatically hidden while reading
- **fixed** — Fix image styling in Duokan e-books
- **fixed** — Fix styling issues with underlines, strikethroughs, and wavy lines in vertically aligned text
- **fixed** — Fix text menu position in PDFs
- **fixed** — Fix panel unexpectedly closing while searching the book table of contents
- **fixed** — Fix extra spacing between text paragraphs
- **fixed** — Fix full-text translation being incomplete in scroll mode
- **fixed** — Mobile: fix highlights in PDFs not displayed in certain cases
- **fixed** — Mobile: fix reading progress in PDFs recorded incorrectly in some cases
- **fixed** — Mobile: fix image display issues in Duokan e-books
- **fixed** — Mobile: fix styling issues with underlines, strikethroughs, and wavy lines when text is formatted vertically
- **fixed** — Mobile: fix issues with extra spacing between text paragraphs
- **fixed** — Mobile: fix full-text translation being incomplete in scroll mode

##### New Features
- Added accurate mode for official AI OCR, which preserves PDF formatting and images
- Windows and macOS now support using the system’s built-in OCR engine for text recognition
- Scanned PDFs now support the highlighting feature; click the pen icon in the bottom-right corner
- Local folders have been added as a new sync data source, allowing cross-platform data synchronization with tools like Syncthing without changing the data storage location
- Notes can now be saved by pressing the Enter key
- Now the menu buttons near the edge are hidden by default. You need to move the mouse near the edge to trigger.
- Added an option to hide the sync progress bar during synchronization; go to Settings > Sync & Backup
- (Mobile) The sync progress bar is automatically hidden while reading

##### Fixes
- Fixed an issue with image styling in Duokan e-books
- Fixed styling issues with underlines, strikethroughs, and wavy lines in vertically aligned text
- Fixed an issue with the text menu position in PDFs
- Fixed an issue where the panel would unexpectedly close while searching the book table of contents
- Fixed an issue with extra spacing between text paragraphs
- Fixed an issue where full-text translation was incomplete in scroll mode
- (Mobile) Fixed an issue where highlights in PDFs were not displayed in certain cases
- (Mobile) Fixed an issue where reading progress in PDFs was recorded incorrectly in some cases
- (Mobile) Fixed image display issues in Duokan e-books
- (Mobile) Fixed styling issues with underlines, strikethroughs, and wavy lines when text is formatted vertically
- (Mobile) Fixed issues with extra spacing between text paragraphs
- (Mobile) Fixed an issue where full-text translation was incomplete in scroll mode

> [!NOTE]
> This version has been selected as the stable release candidate. It should work fine in most cases. If you have any concerns, please download the [previous stable version](https://github.com/koodo-reader/koodo-reader/releases/tag/v1.7.4)

> [!TIP]
> You can also download the installation package for this version from the [our self-hosted mirror](https://dl.koodoreader.com/latest.html).

##### 新增
- 官方 AI OCR 新增高精度模式，支持保留 PDF 的排版和图片
- Windows 和 macOS 支持调用系统自带的 OCR 引擎识别文字
- 扫描版 PDF 支持划线功能，请点击右下角的笔画按钮
- 同步数据源新增本地文件夹，无需修改数据存储位置即可配合 Syncthing 等同步工具实现跨平台数据同步
- 现在默认隐藏图书周围的按钮，需要将鼠标移动到边缘才会显示
- 记笔记之后支持使用回车键保存
- 新增同步时隐藏同步进度条的选项，请前往设置-同步和备份
- （移动版）阅读时自动隐藏同步进度条

##### 修复
- 修复多看电子书的图片样式问题
- 修复文字竖排时，下划线，删除线和波浪线的样式问题
- 修复 PDF 中的文字菜单位置异常问题
- 修复搜索图书目录时，面板意外退出的问题
- 修复文字段落之间额外的间距问题
- 修复滚动模式下全文翻译翻译不全的问题
- （移动版）修复部分情况下 PDF 中的高亮不展示的问题
- （移动版）修复部分情况下 PDF 记录的阅读进度异常
- （移动版）修复多看电子书的图片样式问题
- （移动版）修复文字竖排时，下划线，删除线和波浪线的样式问题
- （移动版）修复文字段落之间额外的间距问题
- （移动版）修复滚动模式下全文翻译翻译不全的问题


> [!NOTE]
> 此版本由于功能已经稳定，bug也基本修复，被选为下个稳定版候选。如果您对此有任何顾虑，可以下载上一个[稳定版](https://github.com/koodo-reader/koodo-reader/releases/tag/v1.7.4).  

> [!TIP]
> 我们还提供了高速下载镜像，您也可以从 [自托管镜像](https://dl.koodoreader.com/latest.html) 下载此版本的安装包

### v2.4.0 — 2.4.0

- Date: 2026-07-14
- Version: v2.4.0
- Original notes: https://github.com/koodo-reader/koodo-reader/releases/tag/v2.4.0
- Permalink: https://whatsnew.fyi/product/koodo-reader/releases/v2.4.0
- Labels: Platforms: Desktop

- **added** — Added accurate mode for official AI OCR, which preserves PDF formatting and images
- **added** — Windows and macOS now support using the system's built-in OCR engine for text recognition
- **added** — Scanned PDFs now support the highlighting feature
- **added** — Local folders have been added as a new sync data source, allowing cross-platform data synchronization with tools like Syncthing without changing the data storage location
- **added** — Notes can now be saved by pressing the Enter key
- **changed** — Menu buttons near the edge are now hidden by default and only appear when moving the mouse near the edge
- **added** — Added an option to hide the sync progress bar during synchronization in Settings > Sync & Backup
- **changed** — The sync progress bar is automatically hidden while reading on mobile
- **fixed** — Fixed an issue with image styling in Duokan e-books
- **fixed** — Fixed styling issues with underlines, strikethroughs, and wavy lines in vertically aligned text
- **fixed** — Fixed an issue with the text menu position in PDFs
- **fixed** — Fixed an issue where the panel would unexpectedly close while searching the book table of contents
- **fixed** — Fixed an issue with extra spacing between text paragraphs
- **fixed** — Fixed an issue where full-text translation was incomplete in scroll mode
- **fixed** — Fixed an issue where highlights in PDFs were not displayed in certain cases on mobile
- **fixed** — Fixed an issue where reading progress in PDFs was recorded incorrectly in some cases on mobile

##### New Features
- Added accurate mode for official AI OCR, which preserves PDF formatting and images
- Windows and macOS now support using the system’s built-in OCR engine for text recognition
- Scanned PDFs now support the highlighting feature; click the pen icon in the bottom-right corner
- Local folders have been added as a new sync data source, allowing cross-platform data synchronization with tools like Syncthing without changing the data storage location
- Notes can now be saved by pressing the Enter key
- Now the menu buttons near the edge are hidden by default. You need to move the mouse near the edge to trigger.
- Added an option to hide the sync progress bar during synchronization; go to Settings > Sync & Backup
- (Mobile) The sync progress bar is automatically hidden while reading

##### Fixes
- Fixed an issue with image styling in Duokan e-books
- Fixed styling issues with underlines, strikethroughs, and wavy lines in vertically aligned text
- Fixed an issue with the text menu position in PDFs
- Fixed an issue where the panel would unexpectedly close while searching the book table of contents
- Fixed an issue with extra spacing between text paragraphs
- Fixed an issue where full-text translation was incomplete in scroll mode
- (Mobile) Fixed an issue where highlights in PDFs were not displayed in certain cases
- (Mobile) Fixed an issue where reading progress in PDFs was recorded incorrectly in some cases
- (Mobile) Fixed image display issues in Duokan e-books
- (Mobile) Fixed styling issues with underlines, strikethroughs, and wavy lines when text is formatted vertically
- (Mobile) Fixed issues with extra spacing between text paragraphs
- (Mobile) Fixed an issue where full-text translation was incomplete in scroll mode

> [!NOTE]
> This version has been selected as the stable release candidate. It should work fine in most cases. If you have any concerns, please download the [previous stable version](https://github.com/koodo-reader/koodo-reader/releases/tag/v1.7.4)

> [!TIP]
> You can also download the installation package for this version from the [our self-hosted mirror](https://dl.koodoreader.com/latest.html).

##### 新增
- 官方 AI OCR 新增高精度模式，支持保留 PDF 的排版和图片
- Windows 和 macOS 支持调用系统自带的 OCR 引擎识别文字
- 扫描版 PDF 支持划线功能，请点击右下角的笔画按钮
- 同步数据源新增本地文件夹，无需修改数据存储位置即可配合 Syncthing 等同步工具实现跨平台数据同步
- 现在默认隐藏图书周围的按钮，需要将鼠标移动到边缘才会显示
- 记笔记之后支持使用回车键保存
- 新增同步时隐藏同步进度条的选项，请前往设置-同步和备份
- （移动版）阅读时自动隐藏同步进度条

##### 修复
- 修复多看电子书的图片样式问题
- 修复文字竖排时，下划线，删除线和波浪线的样式问题
- 修复 PDF 中的文字菜单位置异常问题
- 修复搜索图书目录时，面板意外退出的问题
- 修复文字段落之间额外的间距问题
- 修复滚动模式下全文翻译翻译不全的问题
- （移动版）修复部分情况下 PDF 中的高亮不展示的问题
- （移动版）修复部分情况下 PDF 记录的阅读进度异常
- （移动版）修复多看电子书的图片样式问题
- （移动版）修复文字竖排时，下划线，删除线和波浪线的样式问题
- （移动版）修复文字段落之间额外的间距问题
- （移动版）修复滚动模式下全文翻译翻译不全的问题


> [!NOTE]
> 此版本由于功能已经稳定，bug也基本修复，被选为下个稳定版候选。如果您对此有任何顾虑，可以下载上一个[稳定版](https://github.com/koodo-reader/koodo-reader/releases/tag/v1.7.4).  

> [!TIP]
> 我们还提供了高速下载镜像，您也可以从 [自托管镜像](https://dl.koodoreader.com/latest.html) 下载此版本的安装包

### v2.3.9 — 2.3.9

- Date: 2026-07-06
- Version: v2.3.9
- Original notes: https://github.com/koodo-reader/koodo-reader/releases/tag/v2.3.9
- Permalink: https://whatsnew.fyi/product/koodo-reader/releases/v2.3.9
- Labels: Platforms: Desktop

- **added** — Support for importing local fonts and downloading curated open-source fonts
- **added** — New highlighting styles: strikethrough and wavy underline
- **added** — Support for customizing text highlighting styles during audiobook playback and in-book searches
- **added** — Support for customizing keyboard shortcuts for over 20 actions including page turning, note-taking, and highlighting
- **added** — Support for adding books to the Bookshelf, Favorites, and the Trash by dragging and dropping them
- **added** — Added the Volcano TTS (Doubao TTS) voice plugin
- **added** — Added the Merriam-Webster dictionary plugin
- **added** — Added a Flipping page-turning animation
- **added** — The image viewer now supports continuous browsing of all images in a book
- **added** — Images from web articles are now embedded and saved in base64 format within the HTML file
- **added** — AI Chat now supports saving and exporting chat history
- **added** — Support for searching book tables of contents
- **added** — Support for editing book content using replacement and deletion rules
- **added** — Added an option to preserve the original PDF background
- **added** — Added an option to force override the book's background style
- **added** — Support for navigating to a bookshelf directly from the book detail dialog
- **added** — Support for customizing the target language for full-text translation
- **added** — Support for code highlighting
- **added** — 20 new reading theme colors have been added
- **added** — Support for cropping PDF margin
- **added** — Support for marking the book as read or unread
- **changed** — Copying Japanese text no longer copies ruby
- **changed** — The book library backup feature has been moved to Settings > Sync and Backup
- **changed** — Optimized the accuracy of online book cover and metadata matching
- **fixed** — Fixed an issue where the word definition feature sometimes failed to enable
- **fixed** — Fixed an issue where books could not be opened after enabling Import as Link in certain cases
- **fixed** — Fixed an issue where text in different paragraphs of some books overlapped
- **fixed** — Fixed an issue with hyperlinks not working in web articles
- **fixed** — Fixed an issue where tables in books would overflow onto the next page
- **fixed** — Fixed an issue where S3 compatible storage not working in the web version after installing the browser extension
- **fixed** — Fixed an issue where full-text translation did not work for certain paragraphs
- **fixed** — Fixed an issue where code was truncated and not displayed in full
- **fixed** — Fixed an issue with the sorting of notes, highlights, and bookmarks on the reading page
- **fixed** — Fixed an issue where certain chapters were skipped while using TTS feature

##### New Features

- Support for importing local fonts and downloading curated open-source fonts
- New highlighting styles: strikethrough and wavy underline
- Support for customizing text highlighting styles during audiobook playback and in-book searches; go to Settings > Appearance
- Support for customizing keyboard shortcuts for over 20 actions, including page turning, note-taking, and highlighting; go to Settings > Shortcuts
- Support for adding books to the Bookshelf, Favorites, and the Trash by dragging and dropping them
- Added the Volcano TTS (Doubao TTS) voice plugin
- Added the Merriam-Webster dictionary plugin
- Added a Flipping page-turning animation; enable it in the reading options panel on the right
- The image viewer now supports continuous browsing of all images in a book
- Images from web articles are now embedded and saved in base64 format within the HTML file
- AI Chat now supports saving and exporting chat history
- Support for searching book tables of contents
- Support for editing book content using replacement and deletion rules; go to Settings > Text Rules
- Optimized the accuracy of online book cover and metadata matching
- Added an option to preserve the original PDF background; enable this in the right-side reading options panel
- Added an option to force override the book’s background style; go to Settings > Reading
- Support for navigating to a bookshelf directly from the book detail dialog
- Copying Japanese text no longer copies ruby
- The book library backup feature has been moved to Settings > Sync and Backup; a separate entry is no longer displayed at the top of the app
- Support for customizing the target language for full-text translation (AI Encyclopedia)
- Support for code highlighting has been added; please enable it in the reading options panel on the right
- 20 new reading theme colors have been added; please enable them in the reading options panel on the right
- Support for cropping PDF margin, please click the crop button in the upper-right corner
- Support for marking the book as read or unread
- (Mobile) Support for selecting text across pages
- (Mobile) Strikethrough and wavy underline styles have been added to highlighting options
- (Mobile) The image viewer now supports continuous browsing of all images in a book
- (Mobile) AI Chat supports saving and exporting chat history
- (Mobile) Support for editing book content using replacement and deletion rules
- (Mobile) Optimized the accuracy of online book cover and metadata matching
- (Mobile) Added an option to preserve the original PDF background
- (Mobile) Copying Japanese text no longer copies ruby
- (Mobile) Support for customizing the target language for full-text translation (AI Encyclopedia)
- (Mobile) Support for code highlighting
- (Mobile) Support for cropping PDF margin

##### Fixes
- Fixed an issue where the word definition feature sometimes failed to enable
- Fixed an issue where books could not be opened after enabling “Import as Link” in certain cases
- Fixed an issue where text in different paragraphs of some books overlapped
- Fixed an issue with hyperlinks not working in web articles
- Fixed an issue where tables in books would overflow onto the next page
- Fixed an issue where S3 compatible storage not working in the web version after installing the browser extension
- Fixed an issue where full-text translation did not work for certain paragraphs
- Fixed an issue where code was truncated and not displayed in full
- (Mobile) Fixed an issue where text from different paragraphs in some books would overlap
- (Mobile) Fixed an issue where tables in books would overflow onto the next page
- (Mobile) Fixed an issue where full-text translation did not work for certain paragraphs
- (Mobile) Fixed an issue where code was truncated and not displayed in full
- (Mobile) Fixed an issue with the sorting of notes, highlights, and bookmarks on the reading page
- (Mobile) Fixed

_[Truncated at 4000 characters — full notes: https://github.com/koodo-reader/koodo-reader/releases/tag/v2.3.9]_

### v2.3.8 — 2.3.8

- Date: 2026-07-05
- Version: v2.3.8
- Original notes: https://github.com/koodo-reader/koodo-reader/releases/tag/v2.3.8
- Permalink: https://whatsnew.fyi/product/koodo-reader/releases/v2.3.8
- Labels: Platforms: Desktop

- **added** — Support for importing local fonts and downloading curated open-source fonts
- **added** — New highlighting styles: strikethrough and wavy underline
- **added** — Support for customizing text highlighting styles during audiobook playback and in-book searches
- **added** — Support for customizing keyboard shortcuts for over 20 actions, including page turning, note-taking, and highlighting
- **added** — Support for adding books to the Bookshelf, Favorites, and the Trash by dragging and dropping them
- **added** — Added the Volcano TTS (Doubao TTS) voice plugin
- **added** — Added the Merriam-Webster dictionary plugin
- **added** — Added a Flipping page-turning animation
- **added** — The image viewer now supports continuous browsing of all images in a book
- **added** — Images from web articles are now embedded and saved in base64 format within the HTML file
- **added** — AI Chat now supports saving and exporting chat history
- **added** — Support for searching book tables of contents
- **added** — Support for editing book content using replacement and deletion rules
- **added** — Added an option to preserve the original PDF background
- **added** — Added an option to force override the book's background style
- **added** — Support for navigating to a bookshelf directly from the book detail dialog
- **added** — Support for customizing the target language for full-text translation
- **added** — Support for code highlighting has been added
- **added** — 20 new reading theme colors have been added
- **added** — Support for cropping PDF margin
- **added** — Support for marking the book as read or unread
- **changed** — Copying Japanese text no longer copies ruby
- **changed** — The book library backup feature has been moved to Settings > Sync and Backup
- **changed** — Optimized the accuracy of online book cover and metadata matching
- **fixed** — Fixed an issue where the word definition feature sometimes failed to enable
- **fixed** — Fixed an issue where books could not be opened after enabling Import as Link in certain cases
- **fixed** — Fixed an issue where text in different paragraphs of some books overlapped
- **fixed** — Fixed an issue with hyperlinks not working in web articles
- **fixed** — Fixed an issue where tables in books would overflow onto the next page
- **fixed** — Fixed an issue where S3 compatible storage not working in the web version after installing the browser extension
- **fixed** — Fixed an issue where full-text translation did not work for certain paragraphs
- **fixed** — Fixed an issue where code was truncated and not displayed in full
- **fixed** — Fixed an issue with the sorting of notes, highlights, and bookmarks on the reading page
- **fixed** — Fixed an issue where certain chapters were skipped while using TTS feature

##### New Features

- Support for importing local fonts and downloading curated open-source fonts
- New highlighting styles: strikethrough and wavy underline
- Support for customizing text highlighting styles during audiobook playback and in-book searches; go to Settings > Appearance
- Support for customizing keyboard shortcuts for over 20 actions, including page turning, note-taking, and highlighting; go to Settings > Shortcuts
- Support for adding books to the Bookshelf, Favorites, and the Trash by dragging and dropping them
- Added the Volcano TTS (Doubao TTS) voice plugin
- Added the Merriam-Webster dictionary plugin
- Added a Flipping page-turning animation; enable it in the reading options panel on the right
- The image viewer now supports continuous browsing of all images in a book
- Images from web articles are now embedded and saved in base64 format within the HTML file
- AI Chat now supports saving and exporting chat history
- Support for searching book tables of contents
- Support for editing book content using replacement and deletion rules; go to Settings > Text Rules
- Optimized the accuracy of online book cover and metadata matching
- Added an option to preserve the original PDF background; enable this in the right-side reading options panel
- Added an option to force override the book’s background style; go to Settings > Reading
- Support for navigating to a bookshelf directly from the book detail dialog
- Copying Japanese text no longer copies ruby
- The book library backup feature has been moved to Settings > Sync and Backup; a separate entry is no longer displayed at the top of the app
- Support for customizing the target language for full-text translation (AI Encyclopedia)
- Support for code highlighting has been added; please enable it in the reading options panel on the right
- 20 new reading theme colors have been added; please enable them in the reading options panel on the right
- Support for cropping PDF margin, please click the crop button in the upper-right corner
- Support for marking the book as read or unread
- (Mobile) Support for selecting text across pages
- (Mobile) Strikethrough and wavy underline styles have been added to highlighting options
- (Mobile) The image viewer now supports continuous browsing of all images in a book
- (Mobile) AI Chat supports saving and exporting chat history
- (Mobile) Support for editing book content using replacement and deletion rules
- (Mobile) Optimized the accuracy of online book cover and metadata matching
- (Mobile) Added an option to preserve the original PDF background
- (Mobile) Copying Japanese text no longer copies ruby
- (Mobile) Support for customizing the target language for full-text translation (AI Encyclopedia)
- (Mobile) Support for code highlighting
- (Mobile) Support for cropping PDF margin

##### Fixes
- Fixed an issue where the word definition feature sometimes failed to enable
- Fixed an issue where books could not be opened after enabling “Import as Link” in certain cases
- Fixed an issue where text in different paragraphs of some books overlapped
- Fixed an issue with hyperlinks not working in web articles
- Fixed an issue where tables in books would overflow onto the next page
- Fixed an issue where S3 compatible storage not working in the web version after installing the browser extension
- Fixed an issue where full-text translation did not work for certain paragraphs
- Fixed an issue where code was truncated and not displayed in full
- (Mobile) Fixed an issue where text from different paragraphs in some books would overlap
- (Mobile) Fixed an issue where tables in books would overflow onto the next page
- (Mobile) Fixed an issue where full-text translation did not work for certain paragraphs
- (Mobile) Fixed an issue where code was truncated and not displayed in full
- (Mobile) Fixed an issue with the sorting of notes, highlights, and bookmarks on the reading page
- (Mobile) Fixed

_[Truncated at 4000 characters — full notes: https://github.com/koodo-reader/koodo-reader/releases/tag/v2.3.8]_

### v2.3.7 — 2.3.7

- Date: 2026-06-15
- Version: v2.3.7
- Original notes: https://github.com/koodo-reader/koodo-reader/releases/tag/v2.3.7
- Permalink: https://whatsnew.fyi/product/koodo-reader/releases/v2.3.7
- Labels: Platforms: Desktop

- **added** — Display a black theme in the window title bar in Dark Mode
- **added** — Support for searching and matching book covers and metadata online
- **added** — Support for syncing notes and highlights with Siyuan Notes when running with network serving feature enabled
- **added** — Support for importing books via URL using the book's download link
- **added** — Browser extension support for clipping web pages and saving them to the library
- **added** — Support for importing articles via URL links from the web
- **added** — Web version now supports restoring the book library and full-screen reading
- **added** — Automatic sync feature after importing books
- **added** — Support for returning to the previous reading position after clicking notes, highlights, bookmarks, or table of contents
- **added** — Added 6 preset book layouts
- **added** — Mobile version supports scheduled sync feature with customizable sync intervals
- **added** — Mobile version supports syncing reading progress with KOReader
- **added** — Mobile version supports syncing new vocabulary to Eudic and Anki
- **added** — Mobile version supports swiping the screen to turn pages after disabling page-turn animations
- **added** — Free mobile users can now use OPDS and reading statistics features
- **added** — iOS now supports update notifications
- **added** — Mobile version supports page-turning animations when volume buttons are enabled for page turning
- **added** — Mobile version Send to Kindle now displays uploading progress
- **added** — Mobile version supports backing up and restoring the book library
- **fixed** — Fixed an issue where the text being read aloud did not sync with the current position while listening to TTS
- **fixed** — Fixed an issue where the password-protected page would pop up repeatedly in certain situations
- **fixed** — Fixed an issue where books, notes, and highlights links could not be opened when the app was not running
- **fixed** — Mobile version fixed an issue where page-turning animations were not disabled in E-ink mode
- **fixed** — Mobile version fixed an error when sending files to Kindle that were too large
- **fixed** — Mobile version fixed an issue where changes to TTS settings did not take effect immediately
- **fixed** — Mobile version fixed an issue where importing large books via sharing or as a default opening method caused an error
- **fixed** — Mobile version fixed an issue where books could not be imported or opened on older versions of iOS due to WebView compatibility issues

##### New Features

- The window title bar will display a black theme in Dark Mode
- Support for searching and matching book covers and metadata online
- Support for syncing notes and highlights with Siyuan Notes; Siyuan Notes must be running with the network serving feature enabled
- Support for importing books via URL using the book's download link
- Browser extension support for clipping web pages from the web and saving them to your library
- Support for importing articles via URL links from the web
- Web version now supports restoring the book library and full-screen reading
- Added automatic sync feature after importing books
- Support for returning to the previous reading position after clicking notes, highlights, bookmarks, or table of contents
- Added 6 preset book layouts
- (Mobile) Support for searching and matching book covers and metadata online
- (Mobile) Supports syncing notes and highlights with Siyuan Notes; Siyuan Notes must be running with network serving enabled
- (Mobile) Added automatic sync feature after importing books
- (Mobile version) Added 6 new preset book layouts
- (Mobile) Added scheduled sync feature with customizable sync intervals; go to Settings > Sync Options
- (Mobile) Support for syncing reading progress with KOReader. Go to Settings > Sync Options
- (Mobile) Support for syncing new vocabulary to Eudic and Anki. Go to Settings > Sync Options
- (Mobile) Support for swiping the screen to turn pages after disabling page-turn animations
- (Mobile) Free users can now use OPDS and reading statistics features
- (Mobile) iOS now supports update notifications
- (Mobile) Page-turning animations are now supported when volume buttons are enabled for page turning
- (Mobile) Send to Kindle now displays uploading progress
- (Mobile) Support for backing up and restoring the book library; go to Settings and scroll to the bottom

##### Fixes
- Fixed an issue where the text being read aloud did not sync with the current position while listening to TTS
- Fixed an issue where the password-protected page would pop up repeatedly in certain situations
- Fixed an issue where books, notes, and highlights links could not be opened when the app was not running
- (Mobile) Fixed an issue where the narration did not sync with the current position while using TTS
- (Mobile) Fixed an issue where the TTS feature malfunctioned in certain situations
- (Mobile) Fixed an issue where page-turning animations were not disabled in E-ink mode
- (Mobile) Fixed an error when sending files to Kindle that were too large
- (Mobile) Fixed an issue where changes to TTS settings did not take effect immediately
- (Mobile) Fixed an issue where importing large books via sharing or as a default opening method caused an error
- (Mobile) Fixed an issue where books could not be imported or opened on older versions of iOS (caused by WebView compatibility issues)
- (Mobile) TTS stopped unexpectedly after locking the screen

> [!NOTE]
> This version has been selected as the stable release candidate. It should work fine in most cases. If you have any concerns, please download the [previous stable version](https://github.com/koodo-reader/koodo-reader/releases/tag/v1.7.4)

> [!TIP]
> You can also download the installation package for this version from the [our self-hosted mirror](https://dl.koodoreader.com/latest.html).

##### 新增

- 窗口标题栏在黑夜模式下将显示为黑色
- 支持从网络上搜索和匹配图书封面和元数据，请在图书上右键，编辑图书
- 支持将笔记和高亮同步思源笔记，需要保持思源笔记处于运行状态，并开启了网络伺服功能
- 支持通过图书的下载链接从URL导入图书
- 浏览器扩展支持从网络上剪藏网页保存到书库
- 支持通过网络上的文章链接从URL导入文章
- 网页版支持恢复图书库和全屏阅读功能
- 导入图书之后新增自动同步功能
- 点击笔记、高亮、书签、目录跳转之后，支持点击返回按钮返回之前的阅读位置
- 新增6个预设的图书排版
- （移动版）支持从网络上搜索和匹配图书封面和元数据
- （移动版）支持将笔记和高亮同步思源笔记，需要保持思源笔记处于运行状态，并开启了网络伺服功能
- （移动版）导入图书之后新增自动同步功能
- （移动版）新增6个预设的图书排版
- （移动版）新增定时同步功能，支持自定义同步间隔，请前往设置-同步选项
- （移动版）支持和 KOReader 之间同步图书阅读进度，请前往设置-同步选项
- （移动版）支持同步生词到欧路词典和 Anki，请前往设置-同步选项
- （移动版）关闭翻页动画之后，支持滑动屏幕翻页
- （移动版）免费用户支持使用OPDS和阅读统计功能
- （移动版）iOS 支持更新提示
- （移动版）开启音

_[Truncated at 4000 characters — full notes: https://github.com/koodo-reader/koodo-reader/releases/tag/v2.3.7]_

### v2.3.6 — 2.3.6

- Date: 2026-06-14
- Version: v2.3.6
- Original notes: https://github.com/koodo-reader/koodo-reader/releases/tag/v2.3.6
- Permalink: https://whatsnew.fyi/product/koodo-reader/releases/v2.3.6
- Labels: Platforms: Desktop

- **added** — Window title bar displays black theme in Dark Mode
- **added** — Support for searching and matching book covers and metadata online
- **added** — Support for syncing notes and highlights with Siyuan Notes
- **added** — Support for importing books via URL using the book's download link
- **added** — Browser extension support for clipping web pages and saving them to library
- **added** — Support for importing articles via URL links from the web
- **added** — Web version now supports restoring the book library and full-screen reading
- **added** — Automatic sync feature after importing books
- **added** — Support for returning to previous reading position after clicking notes, highlights, bookmarks, or table of contents
- **added** — 6 preset book layouts
- **added** — Mobile version supports scheduled sync feature with customizable sync intervals
- **added** — Mobile version supports syncing reading progress with KOReader
- **added** — Mobile version supports syncing new vocabulary to Eudic and Anki
- **added** — Mobile version supports swiping the screen to turn pages after disabling page-turn animations
- **added** — Mobile free users can now use OPDS and reading statistics features
- **added** — iOS now supports update notifications
- **added** — Mobile page-turning animations are now supported when volume buttons are enabled for page turning
- **added** — Send to Kindle now displays uploading progress
- **fixed** — Fixed issue where text being read aloud did not sync with current position while listening to TTS
- **fixed** — Fixed issue where password-protected page would pop up repeatedly in certain situations

##### New Features

- The window title bar will display a black theme in Dark Mode
- Support for searching and matching book covers and metadata online
- Support for syncing notes and highlights with Siyuan Notes; Siyuan Notes must be running with the network serving feature enabled
- Support for importing books via URL using the book's download link
- Browser extension support for clipping web pages from the web and saving them to your library
- Support for importing articles via URL links from the web
- Web version now supports restoring the book library and full-screen reading
- Added automatic sync feature after importing books
- Support for returning to the previous reading position after clicking notes, highlights, bookmarks, or table of contents
- Added 6 preset book layouts
- (Mobile) Support for searching and matching book covers and metadata online
- (Mobile) Supports syncing notes and highlights with Siyuan Notes; Siyuan Notes must be running with network serving enabled
- (Mobile) Added automatic sync feature after importing books
- (Mobile version) Added 6 new preset book layouts
- (Mobile) Added scheduled sync feature with customizable sync intervals; go to Settings > Sync Options
- (Mobile) Support for syncing reading progress with KOReader. Go to Settings > Sync Options
- (Mobile) Support for syncing new vocabulary to Eudic and Anki. Go to Settings > Sync Options
- (Mobile) Support for swiping the screen to turn pages after disabling page-turn animations
- (Mobile) Free users can now use OPDS and reading statistics features
- (Mobile) iOS now supports update notifications
- (Mobile) Page-turning animations are now supported when volume buttons are enabled for page turning
- (Mobile) Send to Kindle now displays uploading progress

##### Fixes
- Fixed an issue where the text being read aloud did not sync with the current position while listening to TTS
- Fixed an issue where the password-protected page would pop up repeatedly in certain situations
- Fixed an issue where books, notes, and highlights links could not be opened when the app was not running
- (Mobile) Fixed an issue where the narration did not sync with the current position while using TTS
- (Mobile) Fixed an issue where the TTS feature malfunctioned in certain situations
- (Mobile) Fixed an issue where page-turning animations were not disabled in E-ink mode
- (Mobile) Fixed an error when sending files to Kindle that were too large
- (Mobile) Fixed an issue where changes to TTS settings did not take effect immediately
- (Mobile) Fixed an issue where importing large books via sharing or as a default opening method caused an error
- (Mobile) Fixed an issue where books could not be imported or opened on older versions of iOS (caused by WebView compatibility issues)
- (Mobile) TTS stopped unexpectedly after locking the screen

> [!NOTE]
> This version has been selected as the stable release candidate. It should work fine in most cases. If you have any concerns, please download the [previous stable version](https://github.com/koodo-reader/koodo-reader/releases/tag/v1.7.4)

> [!TIP]
> You can also download the installation package for this version from the [our self-hosted mirror](https://dl.koodoreader.com/latest.html).

##### 新增

- 窗口标题栏在黑夜模式下将显示为黑色
- 支持从网络上搜索和匹配图书封面和元数据，请在图书上右键，编辑图书
- 支持将笔记和高亮同步思源笔记，需要保持思源笔记处于运行状态，并开启了网络伺服功能
- 支持通过图书的下载链接从URL导入图书
- 浏览器扩展支持从网络上剪藏网页保存到书库
- 支持通过网络上的文章链接从URL导入文章
- 网页版支持恢复图书库和全屏阅读功能
- 导入图书之后新增自动同步功能
- 点击笔记、高亮、书签、目录跳转之后，支持点击返回按钮返回之前的阅读位置
- 新增6个预设的图书排版
- （移动版）支持从网络上搜索和匹配图书封面和元数据
- （移动版）支持将笔记和高亮同步思源笔记，需要保持思源笔记处于运行状态，并开启了网络伺服功能
- （移动版）导入图书之后新增自动同步功能
- （移动版）新增6个预设的图书排版
- （移动版）新增定时同步功能，支持自定义同步间隔，请前往设置-同步选项
- （移动版）支持和 KOReader 之间同步图书阅读进度，请前往设置-同步选项
- （移动版）支持同步生词到欧路词典和 Anki，请前往设置-同步选项
- （移动版）关闭翻页动画之后，支持滑动屏幕翻页
- （移动版）免费用户支持使用OPDS和阅读统计功能
- （移动版）iOS 支持更新提示
- （移动版）开启音量键翻页之后支持翻页动画
- （移动版）发送到 Kindle支持展示上传进度

##### 修复
- 修复听书时朗读的内容和当前位置不同步的问题
- 修复部分情况下密码保护页面重复弹出的问题
- 修复软

_[Truncated at 4000 characters — full notes: https://github.com/koodo-reader/koodo-reader/releases/tag/v2.3.6]_

### v2.3.5 — 2.3.5

- Date: 2026-05-20
- Version: v2.3.5
- Original notes: https://github.com/koodo-reader/koodo-reader/releases/tag/v2.3.5
- Permalink: https://whatsnew.fyi/product/koodo-reader/releases/v2.3.5
- Labels: Platforms: Desktop

- **added** — Added scheduled synchronization with customizable intervals
- **added** — Backup and restore of book libraries now display progress percentages
- **added** — Backup and restore of book libraries now support streaming to resolve memory leaks caused by large book libraries
- **added** — Support for importing books by dragging and dropping local folders
- **added** — Docker version now supports OPDS functionality for sharing book libraries
- **added** — Support for syncing reading progress with KOReader
- **added** — Docker version supports KOReader sync server feature, fully compatible with the official sync server API
- **added** — Support for obtaining redirect links for books, notes, and highlights
- **added** — Support for syncing new vocabulary to Eudic and Anki
- **added** — Support for importing local MDX dictionaries for lookup
- **added** — Support for protecting the app with a password, PIN, Windows Hello, or Touch ID
- **added** — Mobile version supports batch replacement of book covers
- **changed** — Docker version has been rewritten in Go, reducing image size and improving performance
- **fixed** — Fixed compatibility issues with Cloudreve WebDAV
- **fixed** — Fixed lag when opening certain books
- **fixed** — Fixed an issue with abnormal TXT table of contents
- **fixed** — Fixed an issue where text was obscured in some PDF files
- **fixed** — Fixed an issue where reading statistics did not update when opening a book in the main window
- **fixed** — Fixed an issue where bookmarks remained on the page after deletion

##### New Features

- Added scheduled synchronization with customizable intervals. Go to Settings > Sync & Backup.
- Backup and restore of book libraries now display progress percentages.
- Backup and restore of book libraries now support streaming, resolving memory leaks caused by large book libraries.
- Support for importing books by dragging and dropping local folders.
- The Docker version has been rewritten in Go, reducing image size and improving  performance.
- The Docker version now supports OPDS functionality, allowing you to share book libraries via OPDS
- Support for syncing reading progress with KOReader. Go to Settings > Data
- The Docker version supports the KOReader sync server feature, fully compatible with the official sync server API
- Support for obtaining redirect links for books, notes, and highlights, allowing you to open specific books, notes, and highlights directly via these links
- Supports syncing new vocabulary to Eudic and Anki. Go to Settings > Data
- Supports importing local MDX dictionaries for lookup. Go to Settings > Local Dictionaries
- Supports protecting the app with a password, PIN, Windows Hello, or Touch ID. You need complete verification before opening the app after enabling it. Go to Settings > More Settings
- (Mobile version) Supports batch replacement of book covers. Please tap the “More” button at the top and select “Batch Operations”

##### Fixes
- Fixed compatibility issues with Cloudreve WebDAV
- Fixed lag when opening certain books
- Fixed an issue with abnormal TXT table of contents
- Fixed an issue where text was obscured in some PDF files
- Fixed an issue where reading statistics did not update when opening a book in the main window
- Fixed an issue where bookmarks remained on the page after deletion
- Fixed an issue where backing up the book library via the web version failed in some cases
- (Mobile version) Fixed lag when opening certain books
- (Mobile version) Fixed an issue with abnormal TXT book directories
- (Mobile version) Fixed an issue where text was obscured in some PDF files
- (Mobile version) Fixed an issue with abnormal sorting by book title

> [!NOTE]
> This version has been selected as the stable release candidate. It should work fine in most cases. If you have any concerns, please download the [previous stable version](https://github.com/koodo-reader/koodo-reader/releases/tag/v1.7.4)

> [!TIP]
> You can also download the installation package for this version from the [our self-hosted mirror](https://dl.koodoreader.com/latest.html).

##### 新增

- 新增定时同步功能，支持自定义同步间隔，请前往设置-同步和备份
- 备份和恢复图书库支持展示进度百分比
- 备份和恢复图书库支持流式处理，解决因图书库太大导致的内存泄露问题
- 支持拖拽本地文件夹导入图书
- Docker 版使用 Go 重构，减小镜像体积，提升运行速度
- Docker 版支持 OPDS 功能，您可以将 Docker 版中的图书库以OPDS的方式进行分享
- 支持和 KOReader 之间同步图书阅读进度，请前往设置-数据
- Docker版支持 KOReader 同步服务器功能，完全兼容官方同步服务器接口协议
- 支持获取图书、笔记和高亮的外链，直接通过外链打开指定的图书，笔记和高亮
- 支持同步生词到欧路词典和 Anki，请前往设置-数据
- 支持导入本地的 MDX 词典用于查词，请前往设置-本地词典
- 支持使用密码，PIN，Windows Hello，TouchID 保护软件，需要完成验证之后才能打开软件，请前往设置-更多设置
- （移动版）支持批量替换图书封面，请点击顶部的更多按钮-批量操作

##### 修复
- 修复 Cloudreve WebDAV 的兼容性问题
- 修复部分图书打开时的卡顿问题
- 修复 TXT 图书目录异常问题
- 修复部分 PDF 文件文字被遮挡的问题
- 修复在主窗口打开图书时，阅读统计不生效的问题
- 修复删除书签后，页面上的书签不消失的问题
- 修复部分情况下，网页版备份图书库失败的问题
- （移动版）修复部分图书打开时的卡顿问题
- （移动版）修复 TXT 图书目录异常问题
- （移动版）修复部分 PDF 文件文字被遮挡的问题
- （移动版）修复按照书名排序异常的问题

> [!NOTE]
> 此版本由于功能已经稳定，bug也基本修复，被选为下个稳定版候选。如果您对此有任何顾虑，可以下载上一个[稳定版](https://github.com/koodo-reader/koodo-reader/releases/tag/v1.7.4).  

> [!TIP]
> 我们还提供了高速下载镜像，您也可以从 [自托管镜像](https://dl.koodoreader.com/latest.html) 下载此版本的安装包

### v2.3.4 — 2.3.4

- Date: 2026-05-11
- Version: v2.3.4
- Original notes: https://github.com/koodo-reader/koodo-reader/releases/tag/v2.3.4
- Permalink: https://whatsnew.fyi/product/koodo-reader/releases/v2.3.4
- Labels: Platforms: Desktop

- **added** — Added reading statistics with heatmaps, bar charts, and line charts
- **added** — Added word definitions feature that displays definitions next to unfamiliar words in English, Japanese, and Chinese
- **added** — Added support for customizing text menu options
- **added** — Added Ask AI and Start Reading from Here features after selecting text with manual enablement in text menu
- **added** — Added chapter information to search results within books
- **added** — Added option to display the number of books in a shelf next to the shelf name
- **added** — Added support for Alibaba Qwen TTS, OpenAI TTS, ElevenLabs, Grok TTS, Zhipu TTS, MiMo TTS, and Minimax TTS to the TTS plugin
- **added** — Added support for customizing a book's original path via right-click Edit Book
- **added** — Added support for custom TXT parsers with individual settings per book
- **added** — Added support for sorting books by file size
- **added** — Added support for pinning books via right-click Pin to Top
- **added** — Added support for setting individual book styles per book instead of using global styles
- **added** — Added support for PDF-to-text conversion individual settings per book
- **added** — Added support for editing the book's floating button on mobile
- **changed** — Koodo Sync data is now encrypted by default before storage
- **changed** — Web version now supports WebDAV and S3-compatible services from any provider with browser extension
- **changed** — Optimized speed for the official AI OCR
- **changed** — Optimized performance for unparsed TXT files
- **changed** — Optimized table styles within text
- **changed** — OPDS now supports connection testing
- **fixed** — Fixed text selection abnormality in some PDF files
- **fixed** — Fixed book library backup failures when library was too large
- **fixed** — Fixed text style loss when re-highlighting already highlighted text
- **fixed** — Fixed note highlight list not updating after syncing in some cases on mobile

##### New Features

- Added reading statistics, including heatmaps, bar charts, and line charts
- Added a new feature for displaying definitions of unfamiliar words; when enabled, definitions will appear directly next to unfamiliar words, supporting English, Japanese, and Chinese
- Added support for customizing text menu options
- Added support for “Ask AI” and “Start Reading from Here” after selecting text; these features must be manually enabled in the text menu
- Added chapter information to search results within books
- Added an option to display the number of books in a shelf next to the shelf name; go to Settings > Appearance
- Added support for Alibaba Qwen TTS, OpenAI TTS, ElevenLabs, Grok TTS, Zhipu TTS, MiMo TTS, and Minimax TTS to the TTS plugin. You will need to configure your API key yourself
- Koodo Sync data is now encrypted by default before storage
- OPDS now supports connection testing
- Support for customizing a book’s original path. Right-click on the book and select “Edit Book”
- Support for custom TXT parsers, with individual settings for each book
- Support for sorting books by file size
- The web version supports WebDAV and S3-compatible services from any provider. You will need to install our browser extension
- Optimized speed for the official AI OCR
- Optimized performance for unparsed TXT files
- Support for setting individual book styles per book (instead of using global styles); enable this in the reading options panel on the right
- PDF-to-text conversion now supports individual settings per book
- Support for pinning books; right-click on a book and select “Pin to Top”
- Optimized table styles within text
- (Mobile) Added reading statistics feature, supporting heatmaps, bar charts, line charts, and more
- (Mobile) Added word definitions feature; once enabled, definitions will appear directly next to the words in the text, supporting English, Japanese, and Chinese
- (Mobile) Added support for customizing text menu options
- (Mobile) Support for “Ask AI” and “Read from Here” after selecting text; you must manually enable this in the text menu
- (Mobile) Koodo Sync data is now encrypted by default before storage
- (Mobile) OPDS now supports connection testing
- (Mobile) Support for custom TXT parsers, with individual settings for each book
- (Mobile) Support for sorting books by file size and reading progress
- (Mobile) Optimized speed for the official AI OCR
- (Mobile) Optimized performance for some unparsed TXT files
- (Mobile) Support for setting book styles individually for each book instead of using the global style; please enable this in the reading options panel on the right
- (Mobile) PDF-to-text conversion now supports individual settings for each book
- (Mobile) Optimized table styles within text
- (Mobile) Added support for editing the book's floating button
- (Mobile) Added support for pinning books; long-press the book and select “Pin to Top”

##### Fixes
- Fixed an issue where text selection was abnormal in some PDF files
- Fixed an issue where backing up the book library failed when the library was too large
- Fixed an issue where the text style was lost when re-highlighting text that was already highlighted
- (Mobile) Fixed an issue where text selection was abnormal in some PDF files
- (Mobile) Fixed an issue where the text style was lost when re-highlighting text that was already highlighted
- (Mobile) Fixed an issue where the note highlight list did not update after syncing in some cases

> [!NOTE]
> This version has been selected as the stable release candidate. It should work fine in most cases. If you have any concerns, please download the [previous stable version](https://github.com/koodo-reader/koodo-reader/releases/tag/v1.7.4)

> [!TIP]
> You can also download the installation package for this version from the [our self-hosted mirror](https://dl.koodoreader.com/latest.html).

##### 新增

- 新增阅读统计功能，支持阅读时长热力图，柱状图，折线图等
- 新增生词

_[Truncated at 4000 characters — full notes: https://github.com/koodo-reader/koodo-reader/releases/tag/v2.3.4]_