Federal prosecutors in Brooklyn are throwing the e-book at a pair of Russians they say ran a massive online library of pirated books that was shut down by the Justice Department.

Anton Napolsky, 33, and Valeriia Ermakova, 27, who are both Russian citizens, were busted in Argentina on Nov. 3 at the request of the U.S., the feds revealed on Wednesday.

The duo face criminal copyright infringement, wire fraud and money laundering charges for running the site Z-Library, which boasted having 11 million books available for download.

Z-Library has been online since 2009, giving its users the chance to download copyrighted books and articles for free. The site offered a “premium” account for a donation of $1 or more, which would give users access to additional features, prosecutors allege.

“By making millions of copyrighted works available online for free, while encouraging users to pay for enhanced Z-Library features, Z-Library has robbed individuals of the fruits of their labor — which, for some literary works, represents years or even decades of work — for Napolsky and Ermakova’s personal gain,” the FBI wrote in a criminal complaint unsealed Wednesday.

The federal government shut down nearly 250 web domains connected to Z-Library, prosecutors said.

Visitors to the Z-Library site now find a page with the Department of Justice and FBI seals, along with a message, “This website has been seized.”

“As alleged, the defendants profited illegally off work they stole, often uploading works within mere hours of publication, and in the process victimized authors, publishers and booksellers,” U.S. Attorney Breon Peace said.

Piracy news website TorrentFreak.com reported on Nov. 4 that the site’s domain names were shut down, and several students have railed on social media that they weren’t able to get their textbooks with Z-Library gone.

So-called “shadow libraries” like Z-Library are particularly popular with college students looking for ways to avoid paying for costly textbooks.

The Author’s Guild singled out Z-Library in an Oct. 7 complaint to the Office of the United States Trade Representative, referring to digital piracy as “one of the biggest threats facing authors’ livelihoods today.”

“Z-Library is killing us. A book we release in the morning is up on Z-library by lunchtime. All my books are up there. Furthermore, all the books I’ve published in my new imprint are up there,” best-selling romance novelist Sarina Bowen said in a statement included in the guild’s complaint.

“So I have a dozen authors in despair. This isn’t the only site that hurts us, but it’s the site that keeps showing up in Tiktok videos,” Bowen said.

The head of the Authors Guild, which worked with law enforcement to shut down Z-Library, is aware the free book access was considered essential to many.

“We are not unsympathetic to the plight of those college and other students who have perhaps felt forced to resort to such illegal pirate websites and other free sources of textbooks to help them manage the extremely high cost of higher education,” said Mary Rasenberger, CEO of the Authors Guild.

“However, these students’ anger is misdirected,” Rasenberger continued. “The exorbitant cost of education should not be borne by authors and publishers but by the universities, and it should not be used to justify reliance on foreign criminals for textbooks.”