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Staples says it will shutter 225 North American stores, about 10 percent of the company’s worldwide total of 2,200, by the end of 2015, and the office-supply retailer has started a plan to save about $500 million annually.

PITTSFIELD -- As part of a cost-cutting measure, Staples Inc. announced on Thursday that it plans to close 225 stores in the United States and Canada -- about 12 percent of its total footprint -- by the end of 2015.

The Framingham-based chain has Berkshire outlets in Great Barrington and Pittsfield, and also operates a store in Bennington, Vt.

A list of store closures was not listed on the company’s website on Thursday. Staples media relations bureau did not return a telephone call seeking comment.

The country’s largest office supplies chain is hoping to trim as much as $500 million in costs, according to information on Staples’ website.

Besides the store closings, Staples hopes to cut costs through reductions in its supply chain, sales force, marketing and information technology services.

The chain is facing increasing competition from Internet-based rivals like Inc., a situation that caused Office Depot Inc. to merge with OfficeMax Inc. in 2013, according to Bloomberg News.

Staples Chairman and CEO Ron Sargent said his company’s stores have fallen short of expectations over the past three years, and the company launched a plan last year to "fundamentally reinvent" Staples.

Material from The Associated Press was used in this report.