How do I make a slide deck watchable on mobile?
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Design for small screens first: less text per slide, stronger narration, and controls that are easy to tap.
On mobile, dense slides are the main failure point. Reduce each slide to one idea, enlarge key text, and avoid tiny labels or complex tables. If a detail is important, explain it in narration rather than forcing users to read fine print.
Aim for short segments. Viewers often watch between meetings, so 30 to 60 second sections usually perform better than long uninterrupted blocks.
Navigation also matters. Use obvious next/back controls and visible progress so people know how much is left. Hidden or cramped controls increase exits, especially on older devices.
Before sending externally, run a mobile QA pass on both iOS and Android. Check readability, load speed, audio clarity, and orientation behavior. Mobile watchability is a deliverability issue, not a visual polish issue.