Internet cloud-based storage provider Dropbox has bought SnapJoy - a photo aggregator that launched a year-and-a-half ago.

SnapJoy allows its users to archive and view all of their digital photos from their smartphones and popular apps like Flickr, Instagram and Picasa, and then view them online or via an iOS app.

The photo service is the second major purchase for Dropbox which added online music streaming service AudioGalaxy under its umbrella less than a week ago.

SnapJoy made the announcement on the company blog, saying that it was excited to be joining Dropbox.

"As a fellow Y Combinator company, we've always admired Dropbox and loved their product," said SnapJoy. "From the moment we met the founders, it was clear we shared a common goal. By combining forces with their amazing team, we can leverage the technology and scale of their platform and focus on what matters -- delivering an incredible photo experience to over 100 million people."

Dropbox was first released in 2008 and today boasts over 100 million users of its service. Integrating itself with desktop computers, web browsers and mobile devices, the service allows its customers to save their files on its online cloud storage networks and access them anywhere. It provides 3GB of free storage but then charges a premium for any more than that.

However, the company is facing stiff competition from Microsoft's SkyDrive, Google Drive, and Apple's iCloud among others, which also offer cloud storage.

SnapJoy says that it isn't accepting any new members at present, but reassures existing members that their photos are safe.

The company said that it will provide "more information over the coming weeks" as to what the roadmap for Dropbox integration might be.