Curious about the design behind optus.com.au?
SiteFontCheck scanned their live CSS architecture and identified 5 unique font families.
The website relies heavily on markpro for its main text elements, paired with markprobold and markpro, sans-serif as fallback options, and 2 additional.
5
unique font families
Primary font
markpro
Below is the precise map of font sizes, weights, and text elements used across their site.
Detected Fonts
5 foundmarkpro
114
most awarded mobile network in Australia, May 2026 🏆
markprobold
41
Opensignal’s
markpro, sans-serif
16
Personal
markproheavy
9
Latest from Apple
markpro, ui-sans-serif, sans-serif, system-ui, -apple-system, blinkmacsystemfont, segoe ui, roboto, noto sans, ubuntu, cantarell, helvetica neue
5
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