Community Resources

CUMA — Ultimate Manga Converter A Windows desktop application designed for cleaning and converting PDF, image, EPUB, and XTCH files, with a focus on manga, comic books, and scanned content. It was created to make it easier to produce manga files from images and PDFs for e-readers such as the Xteink X4 and X3, Kindle, Kobo, as well as devices with custom screen resolutions. The application can remove unnecessary parts of pages, keeping only the relevant image content. For example, it can clean a manga or comic PDF downloaded from an online reading website by removing borders, advertisements, headers, and other unwanted elements. Any help or contribution to the project would be greatly appreciated. I am not a programmer, but I have some understanding of programming logic. I created this application using Copilot and ChatGPT to solve a personal problem: reading, creating, and converting manga that is not easily available, using a simple all-in-one tool.

How I use my Xteink X4 to read, learn vocabulary and study languages on the go. My guide covers: • How to flash the CPR-VCODEX firmware • How to install dictionaries • A fast and effective way to create flashcard files for upload • My simple language-learning workflow • Two additional ways to use an Xteink reader as a language-learning tool And of course the documentation is also a reflection of how much I appreciate this device and the possibilities it offers for language learners.

XTLibre is a self-hosted companion app for Xteink and CrossPoint e-readers. It turns EPUB files into device-ready XTC packages, stores them in a local library, exposes them over OPDS, and can send them straight to a reader over WiFi.

A fork of the popular Crosspoint reader firmware with Wordle added. Currently using the most recent version of Crosspoint (v1.1.1).

Send web articles, notes, EPUBs, and screensavers directly to your Xteink X4 over local Wi-Fi. It extracts clean long-form articles into EPUB, supports mobile share sheet sending, batch queues, notes, file management, and works without accounts or cloud services.

Static web app for stamping readme.club Lost & Found QR codes onto Xteink X4 sleep screen images and exporting them as 480×800 24-bit BMP files. Deployed on GitLab Pages.

Alternative dashboard and file explorer for stock firmware

How to use the Xteink X4 and setup crosspoint

Bookshelf is the ultimate companion app for your XTEINK X4 e-reader. Sync your reading progress wirelessly via WiFi and never lose track of where you left off. SEAMLESS WIFI SYNC Connect to your XTEINK X4 e-reader over WiFi and automatically sync your entire library, current book, and reading progress. Works with both the original XTEINK firmware (from XT 3.1.1 to 5.0.3) and Crosspoint Reader (from 0.16 to 1.2) STUNNING HOME SCREEN WIDGETS Track your reading progress without even opening the app. Add beautiful widgets to your home screen showing your current book, cover art, and how far you've read. SHARE YOUR READING JOURNEY Share your progress with friends on social media using beautifully designed cards that showcase your current read.

This tool converts images in EPUB files to baseline JPEG format, optimized for XTEink X4 It runs entirely in your browser — no files are uploaded to any server. • Convert PNG, GIF, WebP, BMP to baseline JPEG • Smart scaling to 480×800 — dramatically reduces file size • Grayscale conversion for e-ink displays • Rotate & split wide images for vertical screens (CW, CCW and vertical splits can be chosen separately for every image with varying percentage of overlap) • Fix SVG covers, images inside EPUB and metadata issues. • Batch processing multiple EPUBs Simple Mode - Default Drop your EPUB, click Convert, download. Uses sensible defaults: 85% quality, grayscale ON. No configuration needed — perfect for quick conversions. ⚙️ Advanced Mode Toggle to reveal all settings: quality slider, image selection grid, rotate & split options, overlap controls, and detailed conversion logs. Use when you need fine control.

Drop in any EPUB and get back a clean, optimized file tuned for the X4's 800×480 4-level grayscale display. A 20-step pipeline handles everything automatically. Collated some already great tools into one, and added a little sprinkle on top.

After seeing several cases for the XTEink X4, I noticed they really weren't doing anything to protect the screen, USB port, and particularly, all the buttons. I was concerned the power button would be pressed while in my pocket. It takes so little to press the button and power on the device leading to losing my place in the book I'm reading. So I made my own case. I spent a lot of time making sure the buttons were protected, sliding into a recessed track regardless of whether the device was screen up or screen down. The screen slides along tracks so that the readable portion of the screen never comes in direct contact with the case and getting scratched. The buttons on the face also slide along an open track to make sure they never come in contact with the case as well. I also created a cutout to make access to the face buttons and side buttons easy, as well as making it simple to push the device up and out of the case, from reading mode to pocket mode.

Forked from varo6/xtcjs. Added 2-bit Greyscale and Manhwa Portrait Strip

Official XTEINK iOS application.

Fork. Added 2-bit greyscale and pdf support and then faster converting and encoding.

A simple online converter that takes an EPUB file with endnotes or footnotes and produces a new EPUB in which all of those references are pulled directly into the main text as parenthetical notes. Instead of navigating back and forth between the text and the end of the book to read citations like “[1]” or “[2],” this tool embeds the note content inline, making it easier to read on devices without touchscreens or convenient navigation controls

Send to X4 is a Chrome and Firefox extension that converts long-form web articles into clean EPUB files and uploads them directly to the Xteink X4 over its WiFi hotspot. Local-first: no accounts, no cloud, no tracking. Uses Readability to strip clutter and generate a clean layout for distraction-free reading

Calibre plugin that converts EPUB cover images and all embedded images to baseline JPEG format. This helps resolve display issues in Crosspoint, where covers may not appear because Xteink does not support progressive JPEG images.

Simple web app that helps you generate Xteink X4 friendly calendar pages. Ready to use as screen saver.

This is a very simple browser-based XTC to PDF converter used to create PDFs from XTC files for the XTeink readers.

You can now convert PDF Files too! The author made the default settings the ones that fits most for them (handwritten notes from classes), Sometimes Atkinson+Strong might be better than the defaults (Atkinson+maximum).

Based on the work done by tazua and Xretsim with cbz2xtc (https://github.com/tazua/cbz2xtc). Repo: https://github.com/varo6/xtcjs

Huge collection of wallpapers suitable for the XTEink X4. More info: https://lowio.xyz/#x4epapers

E-book to XTC format converter based on Cool Reader and crengine for Windows, macOS and Linux. Supported document formats: fb2, fb3, epub (without DRM), rtf, doc, docx, odt, htm, Markdown, chm, pdb, mobi (without DRM), txt, trc, prc. Supports batch mode to convert all documents in a folder.

A web tool that allows for easy creation of wallpapers for the X4 or X3.

Paste a link to any Wikipedia article. This website will extract all the text and download it as a .txt file.

Flash English(or Chinese or Other) firmware from your browser

EPUB to XTC Converter A dedicated tool for converting standard .epub files into the native .xtc binary format for the Xteink X4 e-reader. Available as a desktop app or a no-install web tool. Key Features: Smart Navigation: Automatically generates a Table of Contents with page numbers and a Progress Bar with chapter ticks on every page. Chapter Filtering: Option to hide specific chapters or sections from the TOC and progress bar without removing them from the book. Live Preview: Real-time layout rendering with support for both Portrait and Landscape orientations. Custom Layout: Full control over typography and margins optimized for e-ink displays. Desktop app: https://github.com/Rafal-P-Mazur/EPUB2XTC Web version: https://epub2xtc.streamlit.app/

Generate flashcards optimized for e-ink displays. Create personalized learning materials instantly and study offline on your Xteink.

Just unboxed your Xteink X4? Here's what matters most: charge it for 30 minutes via USB-C, then immediately run the firmware update (Sync → System Update). This single step will save you from layout glitches and stability issues. Don't skip rebuilding the index afterward—open any book, hit OK, select Index. These 5 minutes will make the difference between frustration and smooth sailing. Your X4 isn't like other e-readers. It has no touchscreen (that's a feature, not a bug), uses physical buttons for precise navigation, and works best with a well-organized microSD card. The learning curve is about 10 minutes—just enough time to read your first chapter. We've mapped out exactly which buttons do what, how to transfer books the easy way, and which settings to adjust first for the best reading experience. This guide gets you reading in under 30 minutes. From understanding the button layout to setting up WiFi transfers, organizing your library, and avoiding common newbie mistakes—it's all here in plain English. Download the complete PDF and keep it handy while you set up. Your future self (and your X4) will thank you.

Discord server for developers and users. Discussion of custom firmwares, converters, tools, mods, accessories, wallpapers, fonts. Channels for other small e-readers (M5 Paper S3, obook5, LILYGO T5 Paper S3) and the upcoming Xteink models (X3, S4).

Documentation of my findings analyzing OTA file. My goal was to extract system fonts and try to re-implement external non monospaced fonts like system ones. During that I've managed to extract .bin into blocks of system images. Unfortunately I came to a wall and my current hypothesis is that system fonts are using some internal functions we can't properly use for external fonts. Further investigation is needed, as maybe we could prepare OTA file that can pass new font as internal one, which would allow us to use fonts like Bookerly as system ones.

A professional Python script for automating EPUB file processing and cleanup at scale. Process single files, entire directories, or recursively scan for EPUB files with an interactive menu-driven interface.

This is documentation of my tries of getting into system files. My first try was on English 3.0.2 OTA which I assume is encrypted and hard to work with. This time I was trying to do it on Chinese version from this hub which seems unencrypted and easier to "unpack" and cut into partition segments. I've managed to do that, but because of lack of variables and documentations in those partitions, I think it would need now to be manually de-assembled. I leave all of my findings in hope someone more competent would find this useful for his own purposes.

This guide provides the essential information for optimizing content for the XTeInk X4's 480×800 e-ink display. The key priorities are proper image sizing, file weight management, and understanding the device's formatting limitations.

This is a full flash dump of the English firmware at version 3.0.2.

File Types, Sizes & Formats: all-in-one guide to know everything.

A simple guide to optimize any epub for Xteink X4 (including drm removal)

Web Based free and open source tool to convert ttf/otf font files to .bin file, with customizations like boldness, char spacing, Optical Alignment and with latin alphabet in mind. All of original windows app settings are ported with some others for better handling of latin letters. There's also gallery to browse, submit and download fonts created in the tool.

I’m really glad you’re enjoying my EPUB → XTC converter: http://x4converter.rho.sh I’ve just added a couple of new features that people have been requesting in comments: Landscape rendering Custom fonts Higher image quality (But really slow rendering - https://streamable.com/d9gi6k) Reading progress bar Faster XTC rendering Keep in mind there may still be some bugs. For example, the chapter percentage isn’t always perfectly accurate so if it's bother you then remember to turn it off. I also spotted that during rendering phase a preview looks broken - but don't worry XTC file should be fine.

An all-in-one tool for adjusting, previewing, generating, and pushing fonts! Convert your favorite fonts for your portable e-ink readers - right from your phone. Dotink lets you easily transform ttf fonts into bin fonts optimized for e-ink devices, without needing a computer. Key Features: Use system fonts or import external .ttf font files. Customize character spacing, line height, size, and weight for better readability on your e-ink display. Preview font rendering in real time - closely simulating the actual e-ink device display. Supports multiple portable e-ink readers, including XTEINK X4, MoFei 3.7, and WuDaDa-XiaoMo. 5.

Free Calibre plugin that batch-processes EPUBs with one click. Repairs, optimizes, and cleans your ebook files automatically. Always creates backups. Works on all platforms. And resizes images!

I have compiled a guide on how to flash, backup, and update firmware. The more advanced commands are linux-based, but you shouldn't need those to do a basic flash/backup. https://github.com/Joseph-Cannaday/xteink_x4-english

Convert any Image to BMP files for using as a screensaver on XTEINK X4. Supports compression if required

A Python tool to convert Markdown files to beautifully formatted ePub books with an interactive terminal interface and advanced features.

The official update from the official XTEINK API server.

This is a complete firmware dump of Chinese XTOS 2.2.0

Comprehensive user manual for the XTeink X4, covering setup, features, and troubleshooting. You could read the community guide too, look up, it's in the menu.