You blokes have already done the hard work. I’ll just fill in the gaps…
It belongs to the genus Litoria, as evinced by the dilated disc at the end of the digit (and the general body shape). Location is critical to determining the possible species as many species are variable in colour and pattern and capable of changing colour, thereby resembling others from elsewhere. Given the location, there are quite a few Litoria species resident in the area. However, snout shape, warty texture on back, general body shape and colour, all combined to indicate it is almost certainly L. rothii.
This species has a horizontal pupil with the upper half of the iris being bright red while the lower half is silver-grey. This may well have been evident to whoever took the photo if you ask them. The males have a distinctive call that resembles maniacal laughter. Hence the alternative common name of Laughing Tree Frog. The colour of the font and back surfaces of the thighs is also a very helpful diagnostic when dealing with this genus.
Blue