Xteink X3
The ultra-portable pocket reader.
- Screen
- 3.68″ · 792 × 528 · 259 ppi
- Controls
- Seven buttons
- Light
- None
- Cable
- Magnetic
A dedicated space for the stories that stay with you.
Great reading starts when technology gets out of the way. BookFusion Ink brings our love of thoughtful, focused reading to E Ink hardware.
Made for your library
Bring the world of BookFusion to a dedicated reading device, without making your reading life more complicated.
Focus comes first
A reading-focused experience designed around the simple pleasure of turning the next page.
Built to grow
Xteink is our starting point. We're working toward support for more E Ink devices and manufacturers.
Everything you read. Everywhere you read.
Your eBooks, always within reach
Keep your eBook library connected across your E Ink reader, Android phone or tablet, iPhone, iPad, Web and Desktop. Spend less time transferring files and more time reading.
Save articles now. Read them on E Ink later.
Discover an interesting article while browsing? Save it to BookFusion and enjoy it on your E Ink reader. Your books and articles finally have one home.
Never lose your place again
Start reading on one device and continue on another. Your reading progress stays synchronized, so every device knows where you left off.
Highlights worth keeping
Capture important passages and return to them whenever inspiration strikes. Your highlights stay connected to your library and can be revisited, organized and exported through BookFusion.
Your reading journey, all in one place
Track your reading activity and build better habits. Whether you're reading on E Ink, mobile or your computer, your activity contributes to a connected picture of your reading journey.
A connected library that grows with you
Organize your collection with shelves, tags, series and powerful library tools. Bring together books and articles without scattering your reading life across different apps.
More than firmware. A connected reading experience.
BookFusion Ink brings dedicated E Ink reading into the broader BookFusion ecosystem, including Calibre library synchronization, Notion and Obsidian integrations, highlight exports, and text-to-speech on supported platforms.
- Calibre library sync
- Notion
- Obsidian
- Highlight exports
- Text-to-speech (supported platforms)
- Android · iPhone · iPad · Web · Desktop
Already have an Xteink? You're in the right place.
BookFusion Ink supports these Xteink models. Plug yours in, and the installer recognizes which one it is.
Xteink X4
The original 4.3-inch pocket reader.
- Screen
- 4.26″ · 800 × 480 · 220 ppi
- Controls
- Seven buttons
- Light
- None
- Cable
- USB-C
No longer in Xteink's store
Xteink X4 Classic (X4 V2)
Simple, everyday E Ink reading.
- Screen
- 4.28″ · 800 × 480 · 218 ppi
- Controls
- Seven buttons
- Light
- None
- Cable
- Magnetic
Xteink X4 Pro
More ways to read, day or night.
- Screen
- 4.28″ · 800 × 480 · 218 ppi
- Controls
- Touch, two side buttons
- Light
- Warm and cold front light
- Cable
- Magnetic
A new reading experience is just a few steps away.
Ready to try BookFusion Ink? Plug in your reader and follow the installer's instructions.
-
Plug in your device
Connect it to your computer with its cable: USB-C on the X4, the magnetic cable on the X3, X4 Classic and X4 Pro. Press Power so it's awake.
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Open the installation page
Use the official BookFusion Ink installer, in Chrome or Edge. It recognizes your model.
-
Follow the instructions carefully
Back up your content, then install. Keep the reader plugged in until it restarts.
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Start exploring BookFusion Ink
Once installation finishes, join Wi-Fi, link your BookFusion account with the code the reader shows, and get reading.
Let's get your reader ready.
Open the BookFusion Ink installer in Chrome or Edge on a computer. Safari and Firefox can't reach a reader over USB.
You'll need:
- Your reader and its cable
- Your Wi-Fi network and its password
- Your BookFusion account
Before you install
Firmware installation modifies your device's software and carries risk. Back up books and other important files, follow the instructions for your exact model, and ensure the device has sufficient power. Check any warranty implications with your device manufacturer. Do not disconnect your device during an active firmware update.
If you change your mind, Xteink's own firmware tool restores the original software. And if your reader doesn't appear in the installer at all, stop and contact support before trying anything else.
Your favorite E Ink device deserves a place here, too.
Don't see your reader yet? Tell us which device you'd love BookFusion Ink to support. Reader requests help us understand which hardware to explore next.
You can also make your voice heard directly. Reach out to your device manufacturer's support team or start a constructive discussion in its subreddit. Let them know you'd love to see BookFusion Ink on their devices.
For E Ink device manufacturers
Let's bring BookFusion Ink to your devices.
We're expanding beyond Xteink and would love to hear from companies building the next generation of E Ink readers.
Whether you're launching new hardware or looking to offer a richer reading experience on existing devices, let's explore what's possible together, from technical compatibility and integration to rollout and ongoing support.
Built with reading in mind
Explore an experience shaped by a team dedicated to digital reading.
Meet engaged readers
Connect your hardware to a community that cares deeply about its books and tools.
Plan the right integration
Discuss compatibility, firmware requirements and the path to supporting your devices.
What helps us evaluate a device
- Your company and device models, including anything still in development.
- The hardware basics: processor, display, memory and storage, and inputs such as buttons, touch or a front light.
- How firmware is installed on the device today, and whether it can be updated over the air.
- A technical contact we can work with on compatibility, rollout and ongoing support. A datasheet is welcome but not required to start.
hello@bookfusion.com
Tell us about your devices. We'll review them, tell you what integration could look like, and follow up with next steps.
Everything you need to know before getting started.
Questions? We have a few answers.
Which devices does BookFusion Ink support?
The Xteink X3, X4, X4 Classic and X4 Pro. Plug yours in, and the installer recognizes which one it is. Some X4 Classic and X4 Pro batches use a display controller BookFusion Ink doesn't drive yet; a reader from one of them says so when it starts.
Is this based on CrossPoint or any other open-source firmware?
No. BookFusion Ink was written from the ground up by BookFusion, with a single focus: delivering the complete BookFusion experience on E Ink readers. It is not based on CrossPoint or any other open-source firmware.
Is BookFusion Ink an official Xteink product?
BookFusion Ink is a BookFusion firmware project compatible with Xteink devices. Compatibility does not, by itself, mean that Xteink develops, endorses or provides support for the firmware.
What do I need to install it?
Your reader and its cable, a computer with Chrome or Edge, your Wi-Fi password and a BookFusion account. Safari and Firefox can't reach a reader over USB, and neither can a phone.
Does installing firmware change my device's software?
Yes. Firmware installation modifies the software running on your device. Read the applicable guidance, back up your important files, and check the device manufacturer's warranty conditions before making changes.
Does it sync by itself?
Yes, as it goes to sleep: it sends your place, new highlights and reading time for the book you were reading, and takes a newer place from your other devices. Press Power again to stop it. Sync now on My Shelf brings in the rest, and you can switch it off in Settings, under Sync before sleep.
Can I read books I copy onto the card?
Not yet. BookFusion Ink reads the EPUBs and articles in your BookFusion library: upload a book to BookFusion once, then download it on the reader from My Shelf. PDFs and comics aren't supported yet.
How do I update it?
From the installer: plug the reader in, and it offers the newest firmware. Updates over Wi-Fi are on the way.
Are you adding support for other E Ink brands?
That's the plan. We're interested in expanding BookFusion Ink to more devices and manufacturers, but we haven't announced specific additional models or launch dates yet.
How can I request support for my E Ink reader?
Use the request form above to tell us, and consider asking your device maker through their support channels or subreddit. Tell us the brand and exact model you use.
Can manufacturers contact BookFusion directly?
Absolutely. Reach us at hello@bookfusion.com to discuss your devices and potential integration opportunities.
Ready to make more time for reading?
Give your compatible E Ink reader a new BookFusion experience.