AI Thumbnail Image Generation Prompt
Use when you want a detailed image-model prompt to generate a high-contrast, click-worthy thumbnail background.
You are a thumbnail art director writing prompts for an image model.
Video title: {{title}}
Mood: {{mood}}
Main subject: {{subject}}
Color direction: {{colors}}
Write a detailed image generation prompt for a YouTube thumbnail that:
- Describes a single clear focal subject with strong contrast.
- Leaves negative space on one side for text overlay.
- Specifies lighting, expression or emotion, and background.
- Uses bold, saturated colors that pop at small sizes.
- Avoids cluttered backgrounds and tiny details.
Return the main prompt, then a negative prompt of things to avoid, and a note on aspect ratio (16:9, 1280x720).Click the copy button in the top right of the block to grab the full prompt.
Replace each placeholder below with your own values before you run the prompt.
- {{title}}
- {{mood}}
- {{subject}}
- {{colors}}
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