I love reading ebooks, but hate paying for content with Digital Rights Management (DRM) software. If a file has DRM on it, you don't actually own it. Digital purchases are usually sold as a license that can be revoked at any time, and this software restricts how you can access the digital items you've already bought.

Subscription models like Kindle Unlimited are even worse. You get access to millions of books, and the catch is that they all disappear if you cancel your subscription. There's a better way to read ebooks without paying a cent, and I can't believe I didn't start using it sooner.

An eBook being displayed on a Kindle
Amazon can delete your entire Kindle library, and there's only one thing you can do about it

DRM is a preservation nightmare, but you can fight back against it.

2

When you buy an ebook, you probably don't own it

DRM software controls when, where, and how you can access e-books

When you buy a physical copy of a book, you're in full control of how it's used, copied, or shared. You can keep it forever, lend it to friends, or painstakingly scan each and every page to make a homemade digital copy. There aren't any restrictions. You can resell it or donate it when you're done. Many ebooks are priced similarly to physical formats, like mass market paperback, but they're locked down with DRM that changes the conventional definition of ownership.

The situation is a familiar one. You agree to lengthy terms-of-service agreements filled with legalese that no one reads when using a digital storefront, such as the Kindle Store. These agreements dictate the terms of ebook sale, and essentially state that you are buying a license to access the book, not the book itself. Break the rules or attempt to access the ebook in a way the seller doesn't approve of, and you could lose access entirely.

This is all frustrating to learn as a consumer, especially if you've spent a fortune acquiring a digital ebook library. It's easy to feel disdain for DRM after hearing you don't actually own your ebooks, but it's important to remember DRM in itself isn't a bad thing.

Many digital libraries use DRM software to make sure you don't retain access to ebooks after their loans expire, and this seems perfectly reasonable. You're being lent something for free, and there are a few strings attached. That's better than paying full price for an ebook and getting a digital file with even more strings attached.

Quiz
8 Questions · Test Your Knowledge

How much do you know about ebook formats?

From forgotten flops to modern standards — how well do you know the formats that shaped digital reading?

HistoryFormatsDevicesStandardsPublishers
01 / 8
History

Which ebook format, launched in 1998 by Nuvomedia, was one of the very first dedicated ebook formats and ran on the Rocket eBook device?

Correct! The REB (Rocket eBook) format was a pioneering effort from Nuvomedia in the late 1990s. The Rocket eBook itself was one of the first dedicated ebook readers, predating the Kindle by nearly a decade. The format eventually faded after Gemstar acquired Nuvomedia and discontinued the product line.
Not quite — the answer is REB. Nuvomedia launched the Rocket eBook in 1998, and the proprietary REB format powered it. It was a genuine trailblazer in the ebook world, even if most readers today have never heard of it. The device and format were eventually killed off after Gemstar took over the product line.
02 / 8
Formats

Microsoft's LIT format, used with its Microsoft Reader app, was discontinued in which year?

Correct! Microsoft officially retired the LIT format and Microsoft Reader in August 2011. LIT was a proprietary format based on the Compiled HTML Help format and included DRM protections. Its demise was largely driven by the rise of open formats like EPUB and the dominance of Amazon's Kindle ecosystem.
Not quite — Microsoft discontinued the LIT format in 2011. Microsoft Reader had been around since 2000 and was once considered a serious contender in the ebook space. However, the rise of EPUB and Amazon's Kindle ecosystem left it with little room to survive, and Microsoft pulled the plug that August.
03 / 8
Standards

EPUB, now the dominant open ebook standard, is maintained by which organization?

Correct! The W3C (World Wide Web Consortium) has maintained EPUB since it merged with the IDPF (International Digital Publishing Forum) in 2017. EPUB 3, the current major version, is built on web standards like HTML5 and CSS3, making it a natural fit under the W3C's umbrella. The format is now used by virtually every major ebook retailer except Amazon.
Not quite — the answer is W3C. While EPUB was originally developed and maintained by the IDPF (International Digital Publishing Forum), the IDPF merged with the W3C in 2017. Since then, the World Wide Web Consortium has overseen the standard. EPUB 3 is built on HTML5 and CSS3, making that relationship a natural one.
04 / 8
Amazon

What was the name of Amazon's original proprietary ebook format used on the first Kindle devices, launched in 2007?

Correct! Amazon's original Kindle format was AZW, a proprietary format closely related to the older MOBI format but wrapped with Amazon's own DRM. The first Kindle launched in November 2007 and sold out within hours. Amazon has since evolved its format through AZW3 and eventually KFX, but AZW was where it all began.
Not quite — the answer is AZW. While MOBI is a close relative (Amazon based AZW on it), AZW was Amazon's proprietary format for the original Kindle launch in 2007. It included Amazon's own DRM layer on top of the MOBI structure. Amazon has since moved through AZW3 and KFX as its formats evolved alongside newer Kindle hardware.
05 / 8
Formats

The Palm PDB format was widely used on which type of device in the early 2000s for reading ebooks?

Correct! PDB (Palm Database) was the native format for Palm OS PDAs like the Palm Pilot and Handspring Visor. Apps like Palm Reader and eReader made these pocket-sized devices a surprisingly capable ebook platform before dedicated readers existed. Many readers in the early 2000s swore by their Palms for reading novels on the go.
Not quite — PDB was designed for PDAs running Palm OS. Devices like the Palm Pilot and Handspring Visor used the format through apps like Palm Reader and eReader. It was actually a pretty popular way to read ebooks before the Kindle era, since millions of people already carried PDAs for calendars and contacts.
06 / 8
DRM

Adobe Digital Editions uses which DRM system to protect EPUB and PDF ebooks sold by many major retailers?

Correct! Adobe's DRM system for ebooks is called ADEPT (Adobe Digital Experience Protection Technology), delivered through Adobe Content Server. It's used by retailers like Kobo, Barnes & Noble (for non-Nook-native titles), and libraries using OverDrive. The system ties purchases to an Adobe ID, which can cause headaches when managing books across multiple devices.
Not quite — the answer is Adobe Content Server, which uses the ADEPT DRM system. FairPlay is Apple's DRM used for iTunes and App Store purchases. ADEPT is what most non-Amazon ebook retailers rely on to protect EPUB and PDF files, and it's the system behind library lending platforms like OverDrive as well.
07 / 8
Open Formats

Which ebook format, developed by Dmitry Sklarov and released in 2001, became especially popular in Russia and Eastern Europe and remains in active use today?

Correct! FB2 (FictionBook 2) was created by Dmitry Sklarov and is an XML-based format that tags every element of a book semantically. It became hugely popular in Russia and Eastern Europe and is still widely used today, particularly through readers like FBReader. Its clean XML structure makes it easy to convert to other formats, which has helped its longevity.
Not quite — the answer is FB2, short for FictionBook 2. Developed by Dmitry Sklarov in 2001, it uses XML to structure every part of a book and became the dominant ebook format across Russia and much of Eastern Europe. It's still alive and well today, supported by apps like FBReader, and its open, structured nature makes it a favorite among ebook enthusiasts.
08 / 8
Modern Era

Amazon's most advanced current ebook format, KFX, introduced features like improved typography and Bookerly font support. In approximately which year did Amazon begin rolling it out?

Correct! Amazon began rolling out the KFX format around 2015, alongside the introduction of the Bookerly font designed specifically for screens. KFX brought significant improvements in hyphenation, kerning, and letter spacing compared to AZW3. It remains Amazon's current flagship format, though its proprietary nature means it's only usable within the Kindle ecosystem.
Not quite — Amazon started introducing KFX around 2015. It launched alongside Bookerly, a font Amazon commissioned specifically for screen reading. KFX was a meaningful leap forward in typography quality for Kindle devices, addressing weaknesses in spacing and hyphenation that had bothered readers for years. It's still the format Amazon uses today for its Kindle ecosystem.
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These sites are all about free ebook access

Open Library, Project Gutenberg, and Bibliomania are a few of them

BOOX Page in the case with the library open Credit: 

Joe Robinson / MUO

You might know that in the U.S., copyright protection for books published after 1978 lasts for the life of the author plus an additional 70 years. After copyright protection expires, these titles enter the public domain and anyone can access, reprint, or redistribute it. This is the easiest way to access DRM-free copies of ebooks.

Using sites like Project Gutenberg or Bibliomania, you can access over 75,000 titles that have entered the public domain. Go to the website, download the file in EPUB or PDF form, and load it up on your eReader of choice. It's that easy.

Of course, this only works for older books that have already entered the public domain. The alternative for newer works is to use a digital lending library, like the Internet Archive's Open Library. The Open Library is a bit of a hybrid solution, as it offers unrestricted access to read and download books that are in the public domain while also providing digital loans for newer titles.

The Open Library from the Internet Archive showing the homepage.

Digital libraries like the Open Library use something called "controlled digital lending." The library has a license that allows it to lend one digital copy of a book to one user at a time. So, it works just like a loan from a brick-and-mortar library.

You can check out a book for up to 14 days, and access it in BookReader, EPUB, or PDF versions (supported file types may vary by title). When the loan expires, the files will be disabled thanks to DRM software.

What about newer, paid ebooks?

Libby and similar sites let you borrow ebooks from your local library

Libby Tablet Featured Image Credit: Shaun Cichacki/MUO

Many people buy ebooks from large digital storefronts like the Kindle Store because they're worried the title they want won't be available from a digital library. That fear isn't completely unfounded — if you only use free and open libraries such as Project Gutenberg or Open Library, you'll probably miss out on newer books. There is a solution, though, and it's a site called Libby. It's a central site that offers free ebook and audiobook loans from thousands of public libraries.

Those with a local library offering Libby access don't have to do much to access the massive amount of ebooks available on the platform. To date, Libby has loaned over a billion titles, and all users need is a library card from their local library to access them. If you're not located near one, don't fret. There are many libraries that offer library card access to out-of-state or out-of-country residents, sometimes for a small fee. You can find them online, and MobileRead's ebook lending libraries wiki page is a good place to start.

After you check out a book with Libby, you can either send it to your Amazon account, read it in the Libby app or web client, or download an EPUB copy. Either way, it'll be returned or disabled after the loan period ends, as the EPUB files are locked with Adobe Digital Editions. Again, this is a fair deal, since you're getting ebook access completely free.

Now that I've discovered all the ways to access ebooks without paying for them — completely free and legally — I'll never pay for a locked-down ebook again.

Boox Palma 2 Pro Background Removed
Brand
Onyx
Resolution
B/W: 824 x 1648 (300ppi)
Storage
128GB
Connectivity
Wi-Fi + BT 5.1, supports 2G/3G/4G/5G networks
Screen Size
6.13" Kaleido 3 (4,096 colors) glass screen with flat cover-lens
Processor
Octa-core + BSR

A tiny, pocketable Android 15 eReader with plenty of support for DRM-free files. Tired of ecosystem lock-in while reading? This is your solution.