Table of Contents
Australian Digital Topo Maps
There are a range of free and paid for maps available as GeoPDF and GeoTIFF for download for Australia (information current at Jul 2024)
National
Geoscience Australia has many maps of various scales (1:50k, 1:100k, 1:250k, 1:1m) available as GeoTIFF for free download
States
The level of free digital mapping available varies widely from state to state. Some areas of the states are reasonably well covered by free Geoscience Australia maps (eg the Kimberley, Cape York). In rough order of how useful and free the GeoTIFF/GeoPDF maps are by state (at 2024):
NSW
NSW Spatial Collaboration Portal has a wide range of maps of various scales (1:25k up to 1:100k) in both GeoTIFF and GeoPDF formats, for various years, available for free download:
Queensland
The QTopo service has free GeoPDF maps of various scales (1:10k up to 1:100k) that can be downloaded.
Tasmania
TASMAP has a range of maps of various scales (1:25k up to 1:250k) in both GeoTIFF and GeoPDF formats available for purchase at a small cost (~$2 each)
Victoria
Vicmap has a range of maps of various scales (1:25k up to 1:100k) in GeoPDF formats available for purchase at a cost (~$8.50 each)
Western Australia
Landgate has a range of maps of various scales (1:25k, 1:50k, 1:100k) in locked GeoPDF format available for purchase at a cost (~$15 each). Due to locked format, not sure if these can be converted to GeoTIFF:
https://www.landgate.wa.gov.au/location-data-and-services/maps/topographic-maps/
South Australia
Currently does not have GeoTIFF/GeoPDF maps available
ACT
Covered by NSW
Northern Territory
Covered by Geoscience Australia maps
(This page overlaps with the answer to question Seeking Australian Topo Map GeoTIFFs).