Practical AI image prompts for public service posters, available on Carat.
2026.07.21






These AI prompts help create posters that communicate public messages about safety, environment, and respect. Defining the core message and call to action keeps the visual concept clear.
Set the audience and situation first, then specify one key sentence and the necessary symbols. Include the poster ratio, title area, information modules, icons, and whitespace for an editable layout.
Prioritize contrast and information hierarchy. Match the palette to the urgency and tone of the topic, and request verifiable placeholders instead of elements that could look like real institutional claims.
Use these prompts for fire prevention, school safety, cyberbullying prevention, and environmental campaigns. Keep the layout stable while changing the message and symbols to compare campaign variants.
Before generating, define audience, key copy, call to action, contrast, and output ratio. After generation, check small text readability, symbol meaning, factual clarity, whitespace, and editability.