Controversial copyright laws have been passed by the European Parliament will "harm Europe's creative and digital industries", according to Google.
Article 13 will see tech firms responsible for dealing with material posted without copyright permission. Those in favour of the law claim it will help artists, particularly musicians, to be paid fairly when their content is shared.
Social media content creators argue that it will destroy user-generated content. For example, critics suggest that gaming YouTubers may not be able to upload videos of them playing video games, for instance. However, the legislation was amended earlier this year to ensure that copyrighted material used "for purposes of quotation, criticism, review, caricature, parody and pastiche" would be exempt.
Responding to the law, Google said there was still "legal uncertainty" despite amendments having improved the bill.
It added: "The details matter and we look forward to working with policy-makers, publishers, creators and rights holders, as EU member states move to implement these new rules."
After the European Parliament passed the new laws, it is now up to member states to decide whether or not to adopt them. If they do so, they will have two years to implement the law. The UK has indicated it will carry it into its own law, regardless of when it leaves the European Union.
Catherine Stihler, chief executive of the campaign group Open Knowledge International, said: "We now risk the creation of a more closed society at the very time we should be using digital advances to build a more open world where knowledge creates power for the many, not the few."