Spool is a new mobile bookmarking service for devices like the iPad and iPhone that allows you to save interesting online content to enjoy later. The company launched a private beta today at the TechCrunch Disrupt conference in San Francisco.

The company adds a button to websites and social networking sites like Twitter. Web surfers can then “spool” content — like links and pictures — and save them to view later. Spool re-renders that content on a mobile device that is more readable than a typical website on a mobile device, like an iPhone. It’s like like Instapaper but for more types of content.

The application saves photos, videos and text articles and syncs them to the mobile application. You can view the content while offline, Spool co-founder Avichal Garg said.

“Getting internet content on your phone really shouldn’t be this hard,” Garg said. “When I get on the train ride home, I want to pick up my phone and all the content is on my phone.”

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Spool will launch its iPhone application once it is approved by Apple’s App Store. The company was founded in November, 2010, and has raised an undisclosed amount of funding. Spool is based in San Francisco, Calif.