Swoop comes alongside Google+ hitting 400m total users.
Google has bought 17-year-old Nik Software, the developer of the Instagram-like Snapseed app.
The photo-editing platform is available for desktop and iOS, but not Android, something Google is likely to plough its efforts into.
The Nik team, said: "We’ve always aspired to share our passion for photography with everyone, and with Google’s support we hope to be able to help many millions more people create awesome pictures."
The Android launch will likely stimulate growth of Snapseed's nine million strong user base, but there's a hint Google+ integration may also in the pipeline.
Google's senior VP of engineering, Vic Gundotra, tied the acquisition announcement in with news that Google+ has more than 400 million total users, with 100m monthly active accounts across the mobile app and online.
Of course, Instagram recently crossed the 100m user milestone, which means Google could have a job on its hands to catch up in the photo-sharing stakes.