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How to Read and Annotate EPUB Files on BOOX Note Air (2026 Guide)

The BOOX Note Air series (Note Air, Note Air 2, Note Air 2 Plus, Note Air 3 C) are 10.3-inch Android E Ink tablets from Onyx International. They combine a large display — ideal for A4-formatted PDFs and academic papers — with a pressure-sensitive stylus, the full Android app ecosystem, and BOOX's NeoReader app. For EPUB reading specifically, the Note Air offers three routes: the native NeoReader, KOReader from the Play Store, or Moon+ Reader Pro.

BOOX Note Air model comparison

Model	Screen	Colour	Stylus
Note Air	10.3-inch, 227 ppi	Monochrome	WACOM EMR (4096 levels)
Note Air 2	10.3-inch, 227 ppi	Monochrome	WACOM EMR (4096 levels)
Note Air 2 Plus	10.3-inch, 227 ppi	Kaleido 3 colour	WACOM EMR (4096 levels)
Note Air 3 C	10.3-inch, 227 ppi	Kaleido 3 colour	WACOM EMR (4096 levels)

How to get EPUBs onto your BOOX Note Air

Method 1: USB-C cable

Connect the Note Air to your computer via USB-C.
Select File Transfer (MTP) mode on the device.
Open the device in Finder or File Explorer and navigate to Books/ or Documents/.
Drag your EPUB files into the folder and disconnect. NeoReader indexes them automatically.

Method 2: BOOX Push (cloud sync)

Open the BOOX app on your phone or log into the BOOX web portal.
Upload your EPUB to the Push library.
On your Note Air, open Push → sync. The EPUB downloads automatically.

Method 3: Android apps

Because the Note Air runs Android, you can install Dropbox, Google Drive, OneDrive, or any file-sync app from the Play Store and open EPUBs directly from your cloud storage.

Choosing your EPUB reader app

NeoReader (built-in)

Best choice for stylus annotation. Supports highlights, typed notes, and freehand margin writing via the note layer. Typography options include font, size, spacing, and custom CSS injection for advanced users.

KOReader

Available on the Play Store or as a direct APK. Offers extensive typography control, Calibre wireless sync, dictionary lookup, and OPDS catalogue access. Best for users who want maximum formatting flexibility.

Moon+ Reader Pro

A polished Android EPUB reader with TTS support, extensive theme options, and a large plugin ecosystem. Good for users who prefer a conventional mobile reading experience on an E Ink screen.

Converting PDFs to EPUB for the Note Air

The Note Air handles A4 PDFs well due to its large screen, but fixed-layout journal PDFs still require zooming or column-cropping. Converting to EPUB first gives you:

Reflowable text that adapts to any font size
Full stylus annotation support across the whole document in NeoReader
Searchable text without OCR overhead

Upload your PDF at toolkit.bot.
Click Convert and download the EPUB.
Transfer via USB-C or BOOX Push.

Frequently asked questions

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Can the BOOX Note Air open EPUB files natively?: Yes. The built-in NeoReader app supports EPUB directly. You can also install KOReader or Moon+ Reader from the Play Store for additional formatting options.
How do I transfer an EPUB to my BOOX Note Air?: Connect via USB-C and drag the EPUB to the Books folder, use BOOX Push cloud sync, or install a file-sync app from the Play Store. Files appear in NeoReader automatically.
Can I annotate EPUB files on the BOOX Note Air?: Yes. NeoReader supports text highlights and typed notes. With the stylus you can also write freehand in the margin using the note layer. KOReader adds advanced margin annotation options.
Which is better for EPUB reading on BOOX Note Air: NeoReader or KOReader?: NeoReader is tightly integrated with the OS and has the best stylus annotation features. KOReader offers more typography control and sync options. Many users install both.
What is the difference between BOOX Note Air and Note Air 2 Plus?: The Note Air 2 Plus added a colour E Ink display and improved stylus response. For monochrome EPUB reading, both models perform similarly; the 2 Plus is better for illustrated content.