Designing Slides That Support Your Talk, Not Distract From It
Slides fail an audience in one of two ways: too little, so nobody can follow the structure, or, far more often in academic talks, too much, so a dense wall of text and a chart with eight lines competes directly with whatever the speaker is saying. Getting the balance right takes deliberate design choices, not just filling in a template.
One idea per slide, genuinely
If a slide needs a full sentence to explain what it’s showing, it’s usually trying to do too much. Breaking a complex point across two or three simpler slides, each with one clear idea, tends to land better than a single dense one the audience has to parse mid-talk.
Data visualizations need to be readable from the back of the room
A chart legible on a laptop screen often isn’t legible projected across a large conference room. Larger fonts, fewer data series per chart, and high-contrast colors matter more in this setting than they might in a paper’s printed figures. Test your slides on a projector, not just your own screen, before the actual talk if at all possible.
Text should prompt you, not replace you
A few words or a short phrase per bullet, rather than full sentences, keeps the audience’s attention on you rather than on reading ahead of what you’re saying. If someone can get the entire content of the talk just by reading the slides, the talk itself has become redundant.
Consistent design signals preparation
A uniform font, color scheme, and layout across slides is a small thing that quietly reads as competence, while inconsistent formatting, different fonts pasted in from different sources, mismatched color schemes, reads as rushed, regardless of the underlying research quality.
Use visual hierarchy to guide attention within each slide
Not every element on a slide deserves equal visual weight. The most important number, finding, or image on a given slide should be visually dominant, larger, more contrasted, positioned prominently, rather than competing equally with secondary details.
Avoid animation and transitions that don’t serve a purpose
Decorative slide transitions and unnecessary animation effects date a presentation and distract from the content. Reserve motion for cases where it genuinely helps, building up a complex diagram step by step, for instance, rather than as a stylistic default.
Have a backup that doesn’t depend on the slides working
Projector failures and format incompatibilities are common enough at conferences that being able to deliver the core talk without slides, even briefly, is worth being prepared for, see our guide on handling last-minute changes at conferences for more on this kind of contingency planning.
A slide design checklist
- Each slide contains one clear idea, not several competing for attention
- Charts and data visualizations tested for readability from a distance
- Text kept to short phrases, not full sentences read verbatim
- Font, color scheme, and layout consistent throughout the deck
- A non-slide-dependent backup plan prepared in case of technical failure
Frequently asked questions
What font size is generally safe for a conference room?
A common guideline is at least 24-point for body text and 32-point or larger for headings, though room size and screen distance should factor into the final choice.
Should I include my full references on slides?
Generally not in full, a brief citation or footnote is usually sufficient, with the full reference list available in the paper or a final slide if needed.
Is it better to use a template or design from scratch?
A clean, simple template is usually more efficient and consistent than fully custom design, provided it doesn’t compromise on the core readability principles above.