How to Read PDFs on BOOX — Convert to EPUB for Better Reading on Android E-Ink (2026)

BOOX devices (from ONYX International) are Android-based e-ink devices — they run the Android OS, support any Android app, and come with a built-in PDF and EPUB reader (NeoReader). They're popular with researchers, students, and heavy readers who want a larger screen than a standard Kindle or Kobo. While BOOX can open PDFs directly, converting to EPUB first gives a significantly better reading experience for text-heavy documents.

PDF vs EPUB on BOOX

How to convert and transfer PDF to EPUB on BOOX

Method 1: Convert directly on BOOX (via Chrome)

1. On your BOOX device, open Chrome (install from BOOX App Store if not present)
2. Go to pdf2epub.toolkit.bot
3. Tap to select your PDF from local storage
4. Wait for conversion and download the EPUB
5. Open the downloaded EPUB in NeoReader or KOReader

Method 2: Convert on your computer, transfer to BOOX

1. Go to pdf2epub.toolkit.bot on your computer
2. Convert the PDF and download the EPUB
3. Connect BOOX via USB and copy the EPUB to the Books folder
4. Eject and refresh the library on BOOX

Best EPUB readers to install on BOOX

KOReader (strongly recommended): An open-source reader designed specifically for e-ink devices. Install from the BOOX App Store. KOReader has exceptional typography control, a built-in catalog browser, Calibre Wi-Fi sync, and handles EPUB, PDF, DJVU, CBZ, and more. Many BOOX users install KOReader as their primary reader.

NeoReader (built-in): BOOX's own reader, good general purpose EPUB support. Works well for most EPUBs with adjustable font, margins, and spacing.

Moon+ Reader: Popular Android EPUB reader, available in the BOOX App Store. More familiar interface for users coming from Android phones.

Frequently asked questions

Can BOOX open EPUB files natively?

Yes. BOOX devices run Android and come with NeoReader, which natively supports EPUB, PDF, MOBI, CBZ, and other formats. You can also install any Android EPUB reader app — KOReader, Moon+ Reader, Librera, and others install directly from the BOOX App Store or via APK sideloading. Converting your PDFs to EPUB and opening them in NeoReader or KOReader gives you the best reading experience.

What is the difference between reading PDF and EPUB on BOOX?

PDF on BOOX: the page is fixed-size and must be zoomed. BOOX's 'Reflow PDF' feature attempts to extract and reflow text, but results vary by PDF quality and are often imperfect. EPUB on BOOX: text reflowes natively at any font size you choose, no reflow processing needed, and the experience is identical to any other e-reader. For text-heavy documents, converting to EPUB yourself gives consistently better results than BOOX's built-in PDF reflow.

Does BOOX's built-in PDF reflow work well?

BOOX NeoReader has a 'Reflow' mode that attempts to extract text from PDFs and reflow it. It works reasonably well for simple single-column PDFs, but often struggles with two-column academic PDFs, PDFs with complex formatting, or scanned documents. Converting with pdf2epub.toolkit.bot before transferring to BOOX gives more reliable and better-quality reflowable text.

Which BOOX models support EPUB best?

All BOOX models with NeoReader support EPUB: BOOX Note Air series, BOOX Palma (phone-sized), BOOX Tab series, BOOX Page, and BOOX Poke series. The experience is the same across models — EPUB text reflows to the screen width regardless of screen size. The BOOX Palma (phone-sized) particularly benefits from EPUB conversion since its small screen makes zooming PDFs especially painful.

How do I transfer an EPUB to my BOOX device?

Several options: (1) USB cable — connect BOOX to your computer and copy the EPUB to the Books folder. (2) BOOX Sync / BOOX Drop — ONYX's own cloud sync service. (3) Android file sharing — since BOOX runs Android, you can use any file transfer app: Google Drive, Dropbox, or email an EPUB attachment to yourself and open it in the Gmail app. (4) Wi-Fi transfer apps like Send-to-BOOX or LocalSend.