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How to Read and Annotate EPUB Files on BOOX Go Color (2026 Guide)

The BOOX Go Color is ONYX's pocket-sized 6-inch colour E Ink reader: a Kaleido colour display, Android OS with Google Play, the NeoReader app, and a lightweight 170 g chassis. It brings ONYX's Android flexibility to a compact, affordable form factor — making it a strong option for readers who want colour illustrations, third-party app support, and good EPUB handling in a portable device.

BOOX Go Color: Key Specs

Specification	Detail
Display	6-inch Kaleido colour E Ink, 300 ppi B&W / ~100 ppi colour
OS	Android 11 with Google Play Store
Storage	64 GB internal
Native EPUB support	Yes — NeoReader (EPUB, EPUB3, PDF, MOBI, CBZ, TXT, and more)
Front light	Built-in, adjustable warm/cool
Weight	~170 g
Connectivity	USB-C, Wi-Fi, Bluetooth

Transfer Methods

Method	Best For	How
USB-C cable	Bulk transfers, large files	Connect to PC/Mac, copy EPUBs to the Books or Storage folder
BOOX Push / ONYX cloud	Wireless one-click transfer	Upload EPUB to push.boox.com and send wirelessly to your device
Cloud apps (Dropbox/Drive)	Existing cloud storage users	Install Dropbox or Google Drive from Play Store; download EPUBs directly
BOOX Helper (desktop app)	Library management over Wi-Fi	Install BOOX Helper on PC/Mac; manage and sync your EPUB library wirelessly

NeoReader Settings for EPUB

Font and layout: Adjust font family, size, line spacing, and margins per-book in NeoReader; import custom fonts via the Fonts folder.
Colour saturation: NeoReader lets you boost colour saturation for the Kaleido screen — useful for illustrated EPUBs with charts or comic panels.
Highlight colours: Choose from multiple highlight colours; export annotations as text or CSV via the share menu.
Third-party apps: Install KOReader from APK for advanced rendering, or Kindle/Kobo apps for DRM-protected libraries from those stores.
Refresh rate: Adjust E Ink refresh mode (A2/Regal/HD) to balance speed and display quality for EPUB reading vs. PDF scrolling.

FAQ

Does the BOOX Go Color support EPUB natively?

Yes. The BOOX Go Color supports EPUB via the built-in NeoReader app, which handles EPUB, EPUB3, PDF, MOBI, CBZ, TXT, and many other formats. No conversion is required for DRM-free EPUB files.

What is the best way to transfer EPUB files to the BOOX Go Color?

Connect via USB-C to copy files directly, use the BOOX Push service to send files wirelessly from the ONYX cloud, or install apps like Dropbox, Google Drive, or a browser from the Google Play Store. You can also use ONYX's desktop app (BOOX Helper) to manage your library over Wi-Fi.

How does the colour display compare to other e-readers?

The BOOX Go Color uses a Kaleido colour E Ink screen that renders colour at around 100 ppi for colour elements and 300 ppi for black-and-white text. Colours are more muted than a tablet but far better than a monochrome e-reader for charts, comics, and illustrated documents.

Can I install third-party reading apps on the BOOX Go Color?

Yes. The BOOX Go Color runs Android and has access to the Google Play Store. You can install Kindle, Kobo, Moon+ Reader, KOReader, and other reading apps. KOReader is particularly popular for its advanced EPUB rendering and customisation options.

How do I convert PDFs to EPUB for the BOOX Go Color?

Use toolkit.bot to convert your PDF to EPUB before transferring it to the device. NeoReader also has a built-in PDF reflow mode, but EPUB gives better text rendering and more control over fonts and layout on the 6-inch display.