Digital out-of-home (DOOH)
2 min
static dooh format jpg, png max size 750kb animated dooh format mp4 length recommended 15s or less max size 5mb creative best practices copy length keep it short for longer dwell time venues, under 250 characters font size minimum 9px for large formats font style use sans serif fonts color use darker backgrounds; text should meet wcag 2 0 contrast ratio standards — at least 4 5 1 (aa), ideally 7 1 (aaa) images use simple visuals for roadside/elevated screens; detailed visuals are fine for street level screens
