How to Design a Scientific Conference Poster

A conference poster has one job: to make a busy passer-by stop, understand your main result, and want to talk to you. Most posters fail at this because they are dense walls of text that try to reproduce the whole paper. This guide covers sizing, layout, how much text to use, typography, figures, and printing — so your poster pulls people in instead of pushing them away.

1. Start with the size and orientation

Before any design, confirm your conference's required dimensions and orientation — this is non-negotiable and varies by event. Common formats are A0 (about 84 × 119 cm) in Europe and much of the world, and 48 × 36 inches in the US, in either portrait or landscape. Set your document to the exact size at the start; scaling a poster later degrades quality and throws off your layout. If you are unsure, email the organisers rather than guessing.

2. Design the reading flow

Readers scan posters in a predictable path, usually top-to-bottom within columns, left to right. Use a clear column structure (two or three columns is typical) and number or visually guide the sections so the eye knows where to go next. Put the most important content — your key finding — where attention lands first, near the top centre. Leave generous white space; cramped posters signal hard work to read and get skipped.

3. Cut the text ruthlessly

The single most common mistake is too much text. A poster is a conversation starter, not a manuscript. Replace paragraphs with short bullet points, lead each section with a one-line takeaway, and let figures do the heavy lifting. Aim well under 800 words total. If a sentence isn't essential to understanding your main message at a glance, cut it — you will explain the detail in person.

4. Make the main finding unmissable

Increasingly popular is the "#betterposter" approach: state your single most important finding in plain language, in very large type, right in the middle of the poster, with methods and detail relegated to side columns. Even if you don't adopt the full format, the principle is gold — a person walking past should grasp your core result in a few seconds without reading a word of small text.

5. Typography and readability

Your poster must be legible from roughly 1.5 metres away. As a rough guide, the title should be very large (often 70–100 pt), section headings around 36–48 pt, and body text no smaller than 24 pt. Use a clean sans-serif font, limit yourself to one or two typefaces, and ensure strong contrast between text and background. Avoid all-caps for long text and never put light text on a busy image.

6. Let figures carry the science

Big, clear figures are what make a poster work. Use a few high-quality, self-explanatory graphics rather than many small ones, give each a short caption with the takeaway, and keep a consistent visual and colour style throughout (and colourblind-safe). Because posters print large, every image must be high resolution at final size — a graphic that looks fine on screen can turn into a blurry mess at A0.

7. Add the practical extras

Include your title, authors, affiliations and a contact (email or handle), and consider a QR code linking to the full paper, a PDF of the poster, or your profile — it lets interested people follow up without scribbling notes. Add institutional logos if required, but keep them modest. A one-line "take-home message" at the bottom leaves people with exactly what you want them to remember.

8. Export and print correctly

Export as a high-resolution PDF at the exact poster dimensions, with fonts embedded so nothing reflows at the print shop. Confirm the colour space your printer wants and order a small test print or proof to catch colour and resolution surprises before the full-size run. Give yourself a buffer of a few days before travel in case a reprint is needed.

Related reading: Best Colour Palettes for Scientific Figures and DPI, TIFF & CMYK Explained.