San Francisco: Google Inc. is acquiring Zync Inc., a visual-effects software company for film and television studios as the biggest Web-search service expands its cloud-based offerings.

The Boston-based startup’s Zync render technology lets studios create enhanced scenes and graphics for movies—such as such as Star Trek Into Darkness and Looper—via the Internet. Terms of the deal weren’t disclosed.

Creating amazing special effects requires a skilled team of visual artists and designers, backed by a highly powerful infrastructure to render scenes, Google said on its website. Many studios, however, don’t have the resources or desire to create an in-house rendering farm, or they need to burst past their existing capacity.

Zync’s graphics-rendering tools have been used in hundreds of commercials and more than a dozen feature films, the company said. The startup provides access to computing power and digital storage using cloud computing and was founded in 2011, according to its LinkedIn profile.

Google has been making more acquisitions as it works to bolster its core search-advertising business and extend its reach into new markets such as mobile, telecommunications and driverless cars. The company more than tripled spending on deals in the first half of the year to $4.2 billion, according to a filing last month.

That includes the purchase of cloud-based service provider Stackdriver, a deal the company announced in May. The Mountain View, California-based Google’s smaller acquisitions this year have covered everything from drones to video advertising.