Australian recruitment firm Seek (ASX:SEK) is reducing its full-year revenue guidance due to a moderation in job ad volumes.

It now predicts its revenue will be $15M lower than initially estimated, but expects lower operating costs to offset this drop.

Seek says it plans to maintain provided guidance for its EBITDA of about $560M, and NPAT of about $250M. 

Its share price is up 20% the past six months.