DRM, watermarking, and how much piracy to worry about
Somewhere in the upload form there is a checkbox about digital rights management, and it produces more anxiety than anything else on the page. The book is not out, nobody has taken anything, and you are being asked how hard to lock a door.
The decision is worth five calm minutes. It is not worth the week some authors give it.
What DRM actually is
DRM is encryption. The file you sell is scrambled, and it can only be unscrambled by an app that holds the key — which in practice means the store's own app, signed in to the account that bought the book.
That is the whole mechanism. It does not track the file, it does not watch the reader, and it does not tell you anything. It ties a copy to an ecosystem, and the tie is the product.
What it stops, and what it does not
It stops casual copying between honest people. A reader who finishes your novel and wants to hand it to their sister cannot simply attach the file to an email. That is a real effect, and it is the only one.
It does not stop anyone determined. Tools that strip DRM have existed for as long as DRM has, they are not hard to find, and they are updated whenever the schemes change. A book that a stranger wants to put on a pirate site is on that site whether or not you checked the box. The one person who will definitely get past the lock is the one person it was aimed at.
So the honest summary is that DRM is a speed bump in front of your readers and an open gate behind them.
The costs nobody puts on the form
The checkbox is presented as free protection. It is not free — it is paid for by the people who bought your book.
- They cannot read it where they like. A reader with a Kobo, a preferred reading app, or a device they set up for large type is now restricted to the store's app. Some readers have a strong preference here, and those readers are the ones who buy a lot of books.
- They cannot move it. People change phones, change e-readers, change stores. A DRM'd library does not move with them cleanly, and some of it may not move at all.
- They cannot lend it to one person. The oldest and most effective book marketing in existence is one reader pressing a copy on a friend. DRM turns that off.
- Accessibility gets harder. Locking a file to one app removes the reader's choice of reading system, which can matter a great deal to someone using assistive technology. See Accessible ebooks, and why they are now everyone's problem.
None of these inconvenience a pirate for a second. Each of them inconveniences a customer.
Social watermarking: the version in wide use
The alternative many publishers and stores now prefer is a social watermark. The file is not encrypted. Instead it carries a note identifying the purchase — a name, an order reference, or an invisible marker inside the file.
Nothing about the book changes for its owner. It opens in any app, moves to any device, and can be given to a family member the way a paperback can. What changes is the psychology of uploading it somewhere public, because the copy says who it came from.
That trade is why watermarking has spread. It deters sharing at scale without breaking the file for the person who paid.
In the tools. The ARC Watermarker personalizes a copy for each named recipient, so a file that turns up somewhere it should not be can be traced back to who it was sent to. Start a book → · about the tools
Where the choice is offered to you
For most stores, DRM is a checkbox at upload, set per title, and the setting is generally treated as final for that edition — you may be able to turn it on later but not off, or not change it at all. Terms differ by store and they change, so read the wording on the form in front of you rather than trusting a blog post, this one included.
Practically: decide before you press publish. Watermarking, where it is offered, is usually the store's own handling rather than something you switch on.
Piracy, in proportion
Three things are true at once, and holding all three is what keeps this in proportion.
Obscurity is the bigger problem. For a self-published author, almost nobody knows the book exists. That is the threat to your income. A pirate site listing is evidence that at least someone went looking for you.
A pirated copy is rarely a lost sale. The person who downloads twelve thousand books they will never read was never going to buy one of them. Treating each download as stolen money produces a frightening number that does not correspond to anything.
Takedown requests are a time sink. Every host has a process, the processes vary by country, and the same file reappears elsewhere within days. Authors who take this on find it is a permanent part-time job with very little to show for it. To understand the rights you hold before deciding how much of that to do, start with Copyright: what you have automatically, and what registering adds; past that it is a question for a lawyer in your own country.
Write the next book instead. It is the only thing that reliably increases the value of the last one.
Where locking a file genuinely earns its place
There is one moment where controlling distribution is worth real effort: the weeks before launch, when you send advance copies to reviewers. That file is going to strangers, individually, before anyone can buy it — so a copy that leaks is both traceable and worth tracing.
ARC Delivery emails each reviewer their own watermarked copy and reports who downloaded it. A campaign takes up to 25 reviewers, and the files and the recipient list are deleted 30 days after the campaign is created. Getting early reviews without breaking a rule covers who to send to and when.
Make yours
Everything here is built into the tools, and they are free to use: name your book, bring your manuscript or your artwork, and work as long as you like. You only pay when you want the files without the preview watermark.
Next: Kindle, EPUB and the format alphabet · More: Getting early reviews without breaking a rule · Going wide, or staying exclusive · Selling books directly to readers