European parliamentarians have passed a controversial overhaul of copyright law that could force tech giants to install filters that prevent copyright-protected content from being uploaded.

Lawmakers in Strasbourg, France, voted on Wednesday in favor of the European Union's revamped directive, which is aimed at bringing the bloc's rules on copyright into the 21st century.

The copyright reform was passed with 438 votes in favor, 226 against and 39 abstentions.

But critics say such a law would normalize censorship and restrict internet freedom, preventing users from being able to post content ranging from memes to links to articles from news outlets.

The controversy mainly surrounds two sections of the law — Articles 11 and 13.

Article 11 would grant press publications copyright over the sharing of their content online, meaning they would be able to charge services like Google News for aggregating their stories. Critics have dubbed this as an effective "link tax," but proponents say hyperlinks will be exempt.

Meanwhile, Article 13 calls for "effective content recognition" technology to filter out copyright-protected content. Detractors hold that this part of the law could threaten social media users' ability to share anything from internet memes to snippets of music and film.

Reacting to the result of the vote, Julia Reda, a German Pirate Party lawmaker, said it was "catastrophic" that the parliament voted in favor of the most controversial pieces of the legislation.

"Final vote for Parliament position on the copyright directive with #UploadFilters and #LinkTax adopted," she wrote in a tweet. "Parliament has failed to listen to citizens' and experts' concerns."

Final vote for Parliament position on the copyright directive with #UploadFilters and #LinkTax: adopted. Parliament has failed to listen to citizens’ and experts’ concerns. #SaveYourInternet pic.twitter.com/gtGi6rg5kL

— Julia Reda (@Senficon) September 12, 2018

Opponents of the directive have been using the hashtag #SaveYourInternet on social media.

"The legislation is now better balanced, answering many of the concerns of journalists, publishers and musicians whose work was being shared freely online without stifling innovation or fundamentally changing the nature of the internet," Sajjad Karim, a British Conservative lawmaker, said in a statement following the vote.

"It also takes into account the rights of users, ensuring that materials used for teaching and research, and by cultural and heritage organizations, are not encumbered by unnecessary restrictions."

Wednesday's vote won't be the last you've heard about the EU's copyright reforms.

Lawmakers had initially voted to delay the vote, rejecting the version of the directive that had been agreed by a committee at that time.

Now that politicians in Strasbourg have come to an agreement, the next stage for the law will be what's known as "trilogue," which consists of talks between European Parliament, EU executive body the European Commission, and a collective of the leaders of EU member states known as the European Council.

And even once the directive goes through this process, it will still require each individual EU nation to decide on how they will implement the new rules.