Poster or oral presentation: which to choose at a conference
A talk broadcasts one argument to a seated room for a fixed number of minutes; a poster holds one-to-one conversations for a couple of hours. The talk reaches more people and gives you no chance to answer their real questions; the poster reaches fewer and gives you their attention, their objections and often a collaboration. Neither is the junior version of the other.
This guide compares what each format does well, and how to prepare either one efficiently.
What the format is good at
| Talk | Poster | |
|---|---|---|
| Audience | 30–300 at once, passive | 5–40 over two hours, one at a time |
| Time per person | 12–20 minutes, one-way | 2–10 minutes, two-way |
| Best for | a single clear result, a framework, a position | work in progress, methods detail, anything that invites questions |
| You get back | a few questions at the end | objections, references, contacts |
| Preparation | slides plus rehearsal | one large sheet plus a 90-second pitch |
| Risk | technical failure, running over | standing alone at a bad slot |
For early-stage work, a poster is usually the better deal: you leave with a list of things to fix. For a finished result you want cited, the talk puts it in front of more people.
Preparing a talk
The research-paper talk guide covers the structure; the timing guide covers the word and slide counts. The short version: one claim, stated in the first minute; the evidence; what it changes. Rehearse aloud against a clock, and prepare the backup slides that answer the two questions you know are coming.
Preparing a poster
A poster is read in three passes, and it must work in all of them:
- From three metres: the title and one figure. This is what makes someone walk over — the title should state the finding, not the topic.
- From one metre, in 30 seconds: the headline of each section, a big figure, the conclusion box. Sections down columns, not across.
- Standing next to you, for five minutes: the detail, mostly delivered by you rather than read.
Practical rules that hold across fields: far less text than feels right (a poster is not a paper on a wall), one dominant figure, font sizes that read at a metre (title very large, section headings large, body text around 24 pt), and generous white space. Put a QR code or a short URL to the paper, the code or the data in a corner — people photograph it constantly.
Then write the 90-second pitch and rehearse it. It is the single highest-return part of poster preparation, and the thing most people skip: why it matters, what you did, what you found, what you are unsure about. End with a question — "does this match what you see in your system?" — and the conversation starts itself.
Do not duplicate the work
The material is the same; the packaging differs. Build the figures once, at high resolution, and use them in both. Write the argument once — a claim, three supports, a limit — and it becomes either the talk's structure or the poster's columns. If you are given a poster slot and later a talk, the pitch you rehearsed is already the talk's first minute.
During the session
Stand beside the poster, not in front of it. Do not read it aloud to people. Ask what they work on before launching the pitch, so you can pick the version that matches them. Keep a handful of A4 copies and a way to take contact details, and take a break — two hours of continuous talking is longer than it sounds.
FAQ
Is a poster presentation worse than an oral presentation?
No, it is a different format. Talks reach more people passively; posters produce conversations, objections and contacts, which is usually more useful for work in progress.
How much text should a poster have?
Far less than a paper — headline per section, a dominant figure, a conclusion box. Body text around 24 pt so it reads from a metre away.
What do you say at a poster session?
A rehearsed 90-second pitch: why it matters, what you did, what you found, what is uncertain — then a question that invites the visitor's own experience.
Can I reuse my talk slides as a poster?
Reuse the figures and the argument, not the layout. A poster is read in three passes and needs its own structure.