Labor has quietly ditched its online petitions on pensions and family benefits, ahead of a major savings announcement on Friday which is expected to take the axe to welfare payments.

The websites DontPocketOurPensions.com.au and GiveFamiliesAFairGo.org have disappeared in recent weeks as Labor eyes savings designed to bolster its budget bottom line and mute the government's "black hole" attacks.

The campaign on pensions railed against the government's moves to change the pension assets test, slash concessions by $1.3 billion and lift the qualifying age to 70.