1. How to Design an Eye-Catching Poster: A Step-by-Step Guide

    A well-designed poster can stop someone in their tracks, communicate a message in seconds and drive real action — whether that's attending an event, visiting a shop or remembering a brand. But great poster design doesn't happen by accident. In this guide, we walk you through every step of the process, from defining your purpose to sending your artwork to print.

    At Dipol Print, we print posters for businesses, events and individuals across Brighton & Hove and the wider UK — from compact A3 sheets to large-format A0 displays and custom sizes. Here's how to make sure your poster does its job.

    Step 1: Define Your Poster's Purpose

    Before you open a design tool, be clear about what your poster needs to achieve. A poster promoting a live music event at a Brighton venue has very different requirements to a retail sale poster or an office health and safety notice. Common poster types include:

    • Event and concert posters
    • Promotional and sale posters
    • Informational and wayfinding posters
    • Inspirational and decorative art prints
    • Point-of-sale and retail displays

    Knowing exactly what your poster needs to do will guide every design decision that follows — size, layout, colour, typography and call-to-action.

    Step 2: Choose the Right Size

    Poster size has a direct impact on visibility, print cost and where the poster can be displayed. Standard UK poster sizes are:

    • A3 (297×420mm) — ideal for noticeboards, windows and close-range reading. Popular for menus, event listings and small-scale promotions.
    • A2 (420×594mm) — a versatile mid-size for retail windows, community noticeboards and indoor displays.
    • A1 (594×841mm) — high visibility for retail environments, exhibitions and outdoor hoarding.
    • A0 (841×1189mm) — maximum impact for large-scale displays, exhibition backdrops and outdoor advertising.
    • Custom sizes — available when standard sizes don't fit your display location.

    As a general rule, choose the largest size your budget and display location allow. A poster that's too small to read from a normal viewing distance is a wasted opportunity. See our full range of poster printing options including standard paper, silk and waterproof PVC stocks.

    Step 3: Plan a Clear, Bold Layout

    The most effective posters are also the simplest. A cluttered design forces the viewer to work too hard — and most people won't bother. Keep your layout clean and impactful:

    • Use white space generously — breathing room around your text and images makes everything easier to read and gives your design a professional feel
    • Establish a visual hierarchy — the most important information (headline, event name, key message) should be the largest and most prominent element on the page
    • Keep text minimal — a poster is not a brochure. Strip your copy back to the essential message and nothing more
    • Use a grid — aligning elements to an invisible grid creates order and consistency, even in bold, expressive designs

    Step 4: Choose Your Colours Carefully

    Colour is one of the most powerful tools in a poster designer's kit. A few principles to keep in mind:

    • Contrast is everything — text must be legible against its background. Dark text on a light background or light text on a dark background are the two most reliable combinations
    • Stick to your brand palette — if you're designing for a business or event, use your established brand colours for consistency and recognition
    • Limit your palette — two or three colours are usually enough. More than that and your design risks looking chaotic
    • Design in CMYK — always set up your artwork in CMYK colour mode for print. RGB colours shift when converted to CMYK at print stage. See our guide: What is CMYK and Why Does it Matter?

    Step 5: Get Your Typography Right

    Typography can make or break a poster. The right font choices make your message clear, memorable and on-brand. Key principles:

    • Prioritise legibility — especially for headlines that need to be read from a distance. Decorative fonts have their place, but not as your primary display typeface
    • Limit your font choices — one or two typefaces is usually enough. A bold display font for headlines paired with a clean sans-serif for body text is a reliable, professional combination
    • Size your text for the viewing distance — text that looks fine on screen may be too small to read on a printed A1 poster viewed from several metres away. Always proof your design at the actual printed size before finalising
    • Outline or embed your fonts — always outline or embed fonts before sending artwork to print to prevent font substitution issues

    Step 6: Use High-Quality Images and Graphics

    Low-resolution images are one of the most common reasons poster artwork fails at print. Rules to follow:

    • 300dpi minimum for all images — at the final printed size. Images sourced from websites are typically 72dpi and will print blurry. See our guide: Understanding DPI for Print
    • Keep images relevant — every visual element should earn its place. If an image doesn't reinforce your message, remove it
    • Use vector graphics for logos — vector files (AI, EPS, PDF) scale to any size without losing quality. Never use a low-resolution PNG or JPEG of your logo on a large-format print

    Step 7: Add a Strong Call-to-Action

    Every poster should tell the viewer exactly what to do next. Without a clear call-to-action, even a beautifully designed poster fails to convert attention into action. Examples include:

    • Visit our website at [URL]
    • Book your tickets at [URL]
    • Call us on [phone number]
    • Scan the QR code to find out more
    • Visit us at [address]

    Make your CTA bold, prominent and easy to act on. If you're including a URL or phone number, make sure it's large enough to read at the expected viewing distance.

    Step 8: Set Up Your Artwork for Print

    Once your design is finalised, make sure your artwork is set up correctly before sending to print:

    • Add 3mm bleed — extend your background and edge elements 3mm beyond the trim line to avoid white edges after cutting. See our guide: What is Bleed and Safe Zone?
    • Observe the safe zone — keep all important content at least 3mm inside the trim line
    • Export as PDF — with fonts outlined or embedded and all images at full resolution
    • Proof check before submitting — see our proof checking guide for a full pre-submission checklist

    Print Your Poster in Brighton & Hove

    Once your artwork is ready, we'll take care of the rest. Dipol Print offers poster printing on a range of stocks — from standard uncoated and silk paper to large format posters and fully waterproof PVC posters for outdoor use. All orders can be collected from our print shop at 97 St James's Street, Brighton BN2 1TP, or delivered anywhere in the UK.

    Need help with your artwork? Get in touch with our Brighton team — we're happy to help.