The best e-readers of 2026 and the file types they actually read

Buying an e-reader sounds simple…until you try to load a book that won’t open.

Different devices speak different “file languages,” and not every gadget understands them all. So before you hit Buy Now, it’s worth knowing which reader will happily open your EPUBs, PDFs, or comics and which ones will frown and refuse.

Here’s a tour of the best e-readers in 2026, with a special focus on what file formats they actually handle.

Why File Types Still Matter

Think of file formats like dialects.

Amazon Kindles speak AZW, AZW3, and KFX, which are Amazon’s in-house tongues. Kobo, PocketBook, and Onyx Boox speak a more international language: EPUB, PDF, CBR, MOBI, and more.

If you’ve built your digital library from a mix of sources - for example, Project Gutenberg, your local library, and the occasional impulse-buy from Kobo then file-type support should be your first question, not your last.

Quick Primer: The E-Book Format Cheat Sheet

EPUB: The global standard. Reflowable, open, and friendly — unless you’re on a Kindle, which still doesn’t natively speak it.
AZW / AZW3 / KFX: Amazon’s house formats. Seamless inside the Kindle world, useless outside it.
PDF: Perfect for fixed pages like textbooks and manuals, less fun on small screens.
CBZ / CBR: Comic book formats — Kobo, PocketBook, and Onyx read them happily.
MOBI: An old format that refuses to die; still useful on open-system readers.
DRM: The invisible lock on many purchased e-books. If a file has DRM, even a “supported” format might not open on another device.

The Best E-Readers for Each Kind of Reader

Device	Ecosystem	Supported formats	Best for
Kindle Paperwhite	Amazon	AZW, AZW3, KFX, PDF, TXT, EPUB (via import)	Readers deep in Amazon’s world.
Kindle 2024	Amazon	AZW, AZW3, KFX, PDF, TXT, EPUB (via import)	First-time buyers who just want to read, not tinker.
Kobo Clara Colour	Kobo/ Open	EPUB, EPUB3, KEPUB, PDF, MOBI, TXT, HTML, RTF, CBZ, CBR, JPEG, PNG	Library lovers and format-flexible readers.
Kobo Libra Colour	Kobo/ Open	EPUB, EPUB3, PDF, MOBI, TXT, HTML, CBZ, CBR	Readers who want versatility plus a splash of colour.
Onyx Boox Go 7	Android/ Open	EPUB, MOBI, PDF, DJVU, TXT, DOC, DOCX, HTML, RTF, CBZ, CBR + Android apps	Students, researchers, and note-takers.
Onyx Boox Palma	Androaid/ Open	EPUB, MOBI, PDF, DJVU, TXT, DOC, DOCX, HTML, RTF, CBZ, CBR + Android apps	Anyone who wants a pocket-sized powerhouse.

Converting Between Formats: When Your Files Don't Match Your Reader

Sometimes you'll find yourself with the wrong file type for your device—maybe you have a PDF that would read better as an EPUB, or a MOBI file that needs to become a PDF for sharing.

Online converters like documents.io offer free tools to bridge these gaps:

EPUB to PDF: Perfect when you need to share a reflowable e-book in a fixed format, or when you want to print pages
MOBI to PDF: Useful for converting older Kindle-format files into universally readable PDFs

These conversions come in handy when:

• You're switching between devices (moving from Kindle to Kobo, for example)
• You need to share an e-book with someone using a different reader
• You want to preserve the exact layout of a document
• Your library has files in mixed formats and you want consistency

Just remember: PDFs lose the reflowable magic of EPUB and MOBI, so text won't resize as nicely on smaller screens.

🥇 Amazon Kindle Paperwhite

Price: $159.99

Buy: Amazon US

Ecosystem: Amazon

Supports: AZW, AZW3, KFX, PDF, TXT, EPUB (via import)

Watch out for: Limited native EPUB support, Amazon DRM.

Ideal for: Readers deep in Amazon’s world. Still, the people’s Kindle. It has a sharp display, waterproof body and great lighting. It’s the iPhone of e-readers: sleek, predictable, and built for one ecosystem. If your bookshelf lives on Amazon, then you are best to stick with this classic.

💡 Amazon Kindle (2024)

Price: $109.99

Buy: Amazon US

Ecosystem: Amazon

Supports: Same as the Paperwhite.

Ideal for: First-time buyers who just want to read, not tinker. Smaller, cheaper, lighter, this is Amazon’s gateway Kindle. Perfect for holiday reads and simple setups.

🌈 Kobo Clara Colour

Price: $159.99

Buy: Kobo US

Ecosystem: Kobo / Open

Supports: EPUB, EPUB3, KEPUB, PDF, MOBI, TXT, HTML, RTF, CBZ, CBR, JPEG, PNG

Watch out for: No Amazon book compatibility.

Ideal for: Library lovers and format-flexible readers. The Clara Colour is like the Kindle’s free-spirited cousin - same sleek body, but open to new experiences. It handles almost every format and connects easily to public library systems like OverDrive. Plus, the colour e-ink makes comics and cookbooks look alive.

📖 Kobo Clara BW

Price: $139.99

Buy: Kobo US

Ecosystem: Kobo / Open

Supports: Same as the Colour version.

Ideal for: Readers who just want an affordable, open-format device. Same format freedom, lower price — black and white, not boring.

🧭 Kobo Libra Colour

Price: $229.99

Buy: Kobo US

Ecosystem: Kobo / Open

Supports: EPUB, EPUB3, PDF, MOBI, TXT, HTML, CBZ, CBR

Watch out for: Slightly heavier; no Kindle sync.

Ideal for: Readers who want versatility plus a splash of colour. With a larger screen and stylus support, the Libra feels more premium — great for highlighting, doodling, and devouring graphic novels.

⚙️ Onyx Boox Go 7

Price: $249.99

Buy: Onyx Boox US Store

Ecosystem: Android / Open

Supports: EPUB, MOBI, PDF, DJVU, TXT, DOC, DOCX, HTML, RTF, CBZ, CBR + Android apps

Watch out for: Slightly steeper learning curve.

Ideal for: Students, researchers, and note-takers.

Running on Android, the Boox Go 6 is more like a tablet in disguise. You can install Kindle, Kobo, or Libby apps  and read everything without conversion. It’s the Swiss Army knife of e-readers.

📱 Onyx Boox Palma

Price: $295.98

Buy: Onyx Boox US Store

Ecosystem: Android / Open

Supports: Same formats as the Boox Go 6.

Ideal for: Anyone who wants a pocket-sized powerhouse. It looks like a smartphone, but it’s pure e-ink magic. It’s perfect for reading anywhere, without the distractions of a regular phone.

How to Choose Your Reader

All-in on Amazon? Kindle Paperwhite or Kindle 2024.

Library and multiple stores? Kobo’s your friend.

Need Android apps and note-taking? Go Boox.

The Bottom Line

All e-readers can display words, but not all can display your words.

If you value simplicity, Kindle nails it. If you value flexibility, Kobo opens up the world. And if you want total control, Onyx Boox puts a full Android playground behind that e-ink screen.

Whichever one you choose, check your existing library before you buy because the best e-reader is the one that reads your books.

Notice: Prices and details were correct at the time of publication and may be subject to change.