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AI posters don't have to be horrible

john.hartnup.uk448 points293 comments
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A hands-on experiment confronts the familiar problem of identikit AI-generated event posters by asking a conversational model to produce alternatives. Starting with a simple spring fayre brief, the model first returned a default craft-fair template; after explicitly requesting a different aesthetic the model produced a Bauhaus/geometric-modernist variant and then named and explained that style. Pushing further, the prompter asked for a deliberately varied menu of concrete design directions - ranging from Swiss grid and contemporary editorial to risograph, cut-paper (Matisse), botanical illustration, brutalist, 90s rave, Memphis, Japanese minimal, wayfinding, stamp/letterpress, festival poster and more - showing that specifying a clear aesthetic yields posters that stand out from the repetitive pastel, bunting and hand-drawn floral defaults.

The demonstration includes many generated examples - stamp/letterpress, Japanese minimal, Memphis, Designers Republic-inspired, punk fanzine, 90s drum-and-bass flyer, even a 1940s cubist exhibition poster - and notes quirks such as incidental added copy propagating through the chat. It also points out that some models can produce editable outputs (HTML, layered PNG/PDF) so posters aren’t fixed images. The takeaway: AI can create distinctive, non‑twee event posters if prompts target specific, concrete design aesthetics; a follow-up catalog of 100 styles with ready prompts offers practical templates.

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