"We agree with everyone there has been a change in consumer behaviour looking for information on multiple devices."
The writedown brought asset values into line with international accounting treatments.
The company remained confident in the Herald and regional businesses.
Half-year ebit from the company's New Zealand radio business rose 6 per cent to A$4.8 million because of an increased advertising share.
The results follow a difficult half-year in which the company's Queensland newspapers were affected by floods and consumer sentiment weakened in New Zealand.
APN operates the Star in quake-hit Christchurch, but more significant was the loss of confidence that affected Auckland as much as regional markets for two months.
There were signs consumer confidence was improving, Chenoweth said.
APN's New Zealand publications include the Herald, seven regional dailies and more than 40 community newspapers.
APN shares closed down 8c at $1.05 yesterday.