The Guardian newspaper is becoming a tabloid, as part of a deal that will see it outsource printing to Trinity Mirror.
The paper will abandon its current, European-style 'Berliner' format in an effort to stem heavy losses, but a deal has yet to be finalised, the Telegraph has reported.
The Guardian was printed as a broadsheet until 2005, when it changed to the Berliner format, which is a little bigger than a tabloid. A deal with Trinity Mirror would allow the paper to dispose of its three Berliner presses, which cost it £50m in 2005.
Reports that the Guardian was considering a switch in print format first emerged earlier this year.
The Guardian's publisher, Guardian Media Group (GMG), is exploring a number of options to turn the business around. In March, GMG warned staff to expect further redundancies as it aims to break even.
In April, the group was forced to address rumours that the Guardian was planning a move to Manchester as part of its cost-saving strategy, but a spokesman said at the time: "We have no plans to leave Kings Place (in London) at present."