How to Make a Poster That Reads From Across the Room

Before any design, write the poster as a sentence: "Summer night market, Saturday 14 June, Riverside Park, free entry." Everything on the poster is either that sentence or support for it. If you cannot write it in one line, you are making two posters.

Then list what has to be on it, in order of importance:

• Headline — the event, product or offer, in as few words as possible.
• Image — one picture that makes the headline feel real: the band, the dish, the product, the venue.
• Details — date, time, place, price. Only what someone needs in order to act.
• Action — a ticket link, a QR code, "walk in", "book at the bar".

Everything else — sponsor logos, a paragraph about the event's history, three hashtags — goes on the website or in the caption.

Hierarchy is the order the eye reads things in, and you control it with size, contrast and space. A passer-by should get the headline from across the room, the image from a few steps away, and the details only once they walk up to it.

Two habits improve most posters immediately: use one or two typefaces at most, and leave more empty space than feels comfortable. From a distance, a crowded poster reads as noise.

The slow part of poster design is composing the artwork: placing the subject, setting the colour and leaving room for the words. That is the part AI does well. In LazyKiwi's AI poster generator you upload one photo — a product shot, a band photo, the venue — describe what the poster is for, and get a composed layout with space reserved for your headline. You can also start from a description alone and let the AI create the imagery.

1. 1

   Upload the photo the poster is about

   Use the sharpest version you have. Your photo stays the subject, so the poster is built around your product or artist, not a stock picture of someone else's.

2. 2

   Describe the occasion, the mood and the layout

   Concrete beats clever: "summer market poster, warm colours, wide blank strip at the bottom for the date" or "vintage gig print, two colours, big blank title area at the top". Say the shape as well — portrait for print, square or 9:16 for social.

3. 3

   Generate a few directions

   Run the same brief again for a different composition, or change one word — the colour, the era, the crop — to steer the next one. Keep the version with the clearest focal point and the cleanest title space.

4. 4

   Download and add your exact wording

   Download the high-resolution file and put the headline and details into the space you asked for, as the next section explains.

For film-style key art, the AI movie poster template turns one photo into streaming-series artwork with title and tagline placeholders, and the animated poster template builds a moving film poster over your photo for stories and reels.

Image models can now render short wording, and the poster generator will try to set the text you describe. But AI-generated type is still not exact every time, and a poster with the wrong date is worse than no poster. The safe split:

• Let the AI set mood words and short display headlines you can check at a glance — "NIGHT MARKET", "SALE", "LIVE".
• Add anything that must be exactly right yourself: dates, times, prices, addresses, names, links. Ask for a blank title area in the description, then add the text afterwards.
• To set text that sits naturally in the scene, use add text to photo. To fix one wrong word in a finished design without retyping it, use edit text in image, which keeps the font, colour and angle.

Decide the print size before you generate, because the shape decides the composition. The common sizes:

The A sizes come from the ISO 216 standard and all share one shape, so a design made for A3 scales to A2 or A1 without re-cropping. The US sizes each have a different shape — the paper size reference lists them — so pick one before you compose.

Resolution

Printers commonly ask for around 300 pixels per inch at the final size for anything read up close. That is a lot of pixels: an A3 poster at 300 ppi is about 3,508 × 4,961 pixels, and an 18 × 24 inch poster is 5,400 × 7,200. Large posters seen from a few metres away can print well at a lower resolution, so ask your printer what they need. If your file falls short, the AI photo upscaler enlarges it up to 4x and sharpens detail.

Bleed and safe margins

Posters are trimmed after printing, and the cut is never perfectly exact. Extend the background past the trim line — the bleed, often 3 mm or 1/8 inch, but use your printer's figure — and keep text and faces well inside the edge. When you generate, ask for extra margin around the subject so nothing important ends up near the trim.

One campaign usually needs a printed poster, a feed post and a story. Do not shrink the print file into a square; re-make the composition for each shape so the headline stays big:

• Feed post: square or 4:5, headline plus image, details cut down to the date.
• Story or reel cover: 9:16, with text kept out of the top and bottom strips where the app's buttons sit.
• In the poster generator, say the shape in the description ("square", "9:16") and reuse the same photo and colours so the set matches.

If you need a full template editor for the text-heavy versions, our comparison of Canva alternatives covers the options.

• The one-line message is the biggest thing on the poster.
• Date, time, place and price were typed by you and proofread twice.
• One focal image, one or two typefaces, plenty of empty space.
• The file matches the print shape, with bleed and nothing important near the trim.
• Resolution checked at the final size, and upscaled if needed.
• You have the rights to every photo, logo and font on it.
• A square or 9:16 version made for social, not squeezed from the print file.