10 Best KOReader Plugins to Upgrade Your E-Reader (2026)

KOReader is widely regarded as the ultimate software upgrade for dedicated e-readers. Whether you are running it on a jailbroken Kindle, a Kobo, a PocketBook, or an Android e-ink device, KOReader unlocks unmatched control over document rendering, typography, margin adjustments, and native PDF reflow. However, what truly elevates KOReader from a superior ebook reader into a complete digital reading workstation is its modular plugin ecosystem.

While KOReader works exceptionally well out of the box, activating the right plugins transforms how you manage your library, take notes, track reading statistics, and sync progress across multiple devices. In this comprehensive guide, we will explore the 10 best KOReader plugins in 2026, explaining exactly what each plugin does, why you should use it, and how to configure it for the ultimate reading setup.

If you haven’t installed KOReader on your device yet, make sure to follow our step-by-step Kindle KOReader installation guide before diving into plugin configurations.

1. Kosync (Progress Sync Across Devices)

If you read on multiple devices, such as a primary e-reader at home and a smartphone or secondary device on the go, Kosync is an indispensable plugin. It seamlessly synchronizes your exact reading position, bookmarks, and progress data across every device running KOReader.

Key Features

• Automated Cloud Sync: Automatically saves your current page location whenever you put your device to sleep or close a document.
• Multi-Device Compatibility: Works seamlessly between Kindle, Kobo, PocketBook, and Android installations of KOReader.
• Self-Hosting Support: You can use the official free Kosync community server or host your own private instance for complete data privacy.

How to Configure

Navigate to the top menu bar, select Tools -> Progress sync, and register a free account. Once logged in on your secondary devices, your reading progress updates automatically in the background whenever your device connects to Wi-Fi.

2. Calibre Companion & Wireless Server

Managing a massive ebook library via USB cables quickly becomes tedious. The Calibre wireless integration plugins allow KOReader to connect directly to your desktop Calibre library over your local Wi-Fi network.

Key Features

• Wireless Book Transfers: Browse your entire Calibre catalog directly from your e-reader screen and download titles on demand.
• OPDS Server Browsing: Connects to any OPDS-compliant feed, allowing you to access self-hosted Calibre-Web servers or public ebook archives.
• Metadata Management: Automatically pulls tags, series order, publication dates, and author information into your local file manager.

Why It Matters

Instead of cluttering your e-reader’s internal storage with thousands of files, you can store your master collection on a PC or home server and download books wirelessly whenever you are ready to read.

3. Readwise & Highlight Exporter

For non-fiction readers, researchers, and students, capturing highlights and notes is just as important as reading the text itself. The Highlight Exporter plugin exports your annotations out of KOReader and pushes them straight to your favorite note-taking apps.

Key Features

• Direct Readwise Integration: Automatically uploads book highlights and notes to Readwise, which then routes them into Notion, Obsidian, Roam Research, or Evernote.
• Local Markdown Export: Generates clean, structured Markdown or HTML files directly on your storage drive for local note management.
• JSON & Plain Text Formats: Supports flexible raw data exports for custom archiving scripts.

How to Use

Under Tools -> Export highlights, enable your preferred destination. If using Readwise, simply paste your API access token once, and KOReader will automatically sync new highlights whenever you complete a chapter.

4. Wallabag & Read-it-Later Integration

Reading long-form web articles, essays, and news reports on a computer screen or smartphone causes unnecessary digital eye strain. The Wallabag plugin converts your online read-it-later queue into beautifully formatted e-ink documents.

Key Features

• Distraction-Free Web Reading: Strips away advertisements, pop-ups, and sidebars, delivering pure clean text to your screen.
• Automatic Formatting: Converts web HTML into crisp EPUB format with custom font and margin settings.
• Offline Archiving: Downloads queued articles directly to local storage for reading while traveling or offline.

If you rely on offline tech setups during travel, paired with our recommended offline travel tech tools, KOReader and Wallabag ensure you always have fresh reading material without requiring continuous internet access.

5. Anki Export (Vocabulary & Language Learning)

KOReader is one of the most powerful tools available for language learners reading foreign literature. The Anki Export plugin connects KOReader’s built-in dictionary lookup system with the popular flashcard app Anki.

Key Features

• One-Tap Flashcards: Highlight an unfamiliar word, view its dictionary definition, and send it straight to an Anki card deck.
• Contextual Sentence Capture: Captures the full sentence surrounding the target word to preserve context during vocabulary review.
• Custom Deck Routing: Organize saved vocabulary into specific decks based on language or book title.

Language Learning Advantage

Combining KOReader’s instant pop-up dictionaries with Anki flashcard generation drastically reduces the friction of learning a foreign language through reading.

6. Auto-Warmth & Night Mode Controls

Adjusting frontlight brightness and color temperature manually throughout the day can break your reading immersion. The Auto-Warmth plugin automates ambient lighting parameters based on your location and local time.

Key Features

• Sunset and Sunrise Automation: Calculates your local solar schedule to gradually transition frontlight color temperature from cool white in the afternoon to warm amber at night.
• Eye Strain Reduction: Minimizes blue light exposure during evening reading sessions to promote better sleep hygiene.
• Manual Curve Customization: Allows custom tuning of brightness and warmth thresholds for different hours of the day.

While hardware warmth controls are standard on premium e-readers like the Kindle Paperwhite and Kobo Libra, KOReader’s Auto-Warmth plugin provides far finer software control over color curves than factory operating systems.

7. Reading Statistics & Analytics

If you enjoy tracking your reading habits, annual book counts, or daily reading velocity, KOReader includes an exceptionally detailed internal analytics plugin.

Key Features

• Reading Speed Calculation: Tracks your average time per page and estimates remaining time left in the current chapter or book.
• Visual Charts & Graphs: Generates clean histograms showing daily reading time, monthly trends, and page count totals.
• Calibre Sync: Exports total reading duration and completion status back to Calibre metadata fields.

Unlike stock Kindle or Kobo software, which offers basic progress bars, KOReader gives you granular data on how fast you read different genres and subjects.

8. Gestures Manager

Navigating nested software menus on e-ink displays can feel sluggish due to screen refresh latencies. The Gestures Manager plugin allows you to bind complex actions to simple finger swipes and taps on the screen.

Recommended Gesture Mappings

• Two-Finger Swiping Up/Down: Instantly adjust frontlight brightness without opening settings menus.
• Corner Taps: Toggle night mode or open the table of contents instantly.
• Edge Swiping: Adjust font size or toggle page turn animations on the fly.

Setting up custom gesture shortcuts drastically improves user experience by allowing you to control hardware settings without leaving your active book page.

9. Auto-Suspend & Smart Power Management

Battery longevity is a crucial advantage of e-ink hardware. The Auto-Suspend plugin fine-tunes KOReader’s power consumption metrics to ensure your device lasts weeks between charges.

Key Features

• Deep Sleep Timers: Automatically triggers low-power deep sleep mode after defined periods of inactivity.
• Wi-Fi Power Saver: Automatically disables Wi-Fi chipsets immediately after cloud sync operations finish.
• Custom Cover Art Screensavers: Displays the cover of your current book or custom artwork while the device is sleeping.

Proper power management configuration prevents background processes from draining your battery while your e-reader sits in a backpack or nightstand drawer.

10. Terminal Emulator & System Tools

For technical enthusiasts and power users who love tweaking their devices, the builtin Terminal Emulator and System Tools plugin provides direct shell access inside KOReader.

Key Features

• On-Device Shell Access: Run basic Unix commands, execute custom bash scripts, and manage local directory trees.
• System Resource Monitoring: Check CPU usage, available RAM, and battery voltage levels in real time.
• Script Launcher: Execute custom user scripts to perform batch file conversions, backup configuration folders, or clear cache files.

This plugin is especially useful for managing custom directory setups or troubleshooting jailbroken devices without requiring a connection to a desktop computer.

Summary of Essential KOReader Plugins

Plugin Name	Primary Function	Ideal User
Kosync	Multi-device progress & bookmark synchronization	Readers using multiple devices
Calibre Server	Wireless book downloading & catalog browsing	Large digital library owners
Highlight Exporter	Export notes to Readwise, Notion, and Markdown	Non-fiction readers & researchers
Wallabag	Convert web articles into offline e-books	Long-form web essay readers
Anki Export	Instant flashcard generation from lookup words	Language learners
Auto-Warmth	Automated frontlight warmth & schedule controls	Evening & night readers
Reading Statistics	Detailed reading speed & analytics tracking	Data-driven readers
Gestures Manager	Custom touch shortcuts for hardware settings	Power users seeking speed
Auto-Suspend	Battery optimization & custom cover screensavers	Travelers & mobile readers
Terminal Tools	Embedded shell access & script launcher	Tech enthusiasts & modders

How to Install Custom KOReader Plugins

While all ten plugins listed above come built directly into standard KOReader releases, installing third-party community plugins from GitHub is straightforward:

1. Download the Plugin Folder: Download the community plugin repository as a .zip archive and extract the contents.
2. Connect Your E-Reader: Connect your device to your computer via USB.
3. Navigate to the Plugins Directory: Open the KOReader installation directory (koreader/plugins/).
4. Copy the Plugin: Move the extracted plugin folder (e.g., myplugin.koplugin) directly into the plugins/ directory.
5. Restart KOReader: Safely eject your device and restart KOReader. Your new plugin will appear in the top menu under Tools -> Plugins.

Final Thoughts

KOReader is already an exceptional document viewer, but its plugin ecosystem is what makes it truly revolutionary for e-ink devices. By enabling progress syncing with Kosync, automating light schedules, and exporting highlights straight into your note-taking workflow, your e-reader becomes a unified knowledge management tool.

Take a few minutes to explore the Tools -> Plugins menu on your device today, enable the tools that fit your reading habits, and enjoy a completely tailored reading experience.