Creating Thumbnails and Visuals with AI
What makes a thumbnail work
High contrast, a clear focal point (often a face with an expressive emotion), minimal text (3-5 words max), and legibility at small sizes — these principles guide both your AI prompts and your final selection.
Generating background/composition with AI, adding text yourself
AI image tools struggle with reliable text rendering. Generate the background/scene with AI, then add your headline text using a design tool (Canva, Photoshop) for guaranteed legibility and precise control.
A/B testing thumbnails
Generate 2-3 visual concepts for the same video and use your platform's thumbnail testing feature (where available) or simply track click-through rate changes when you swap thumbnails on similar content.
Key Takeaways
- Strong thumbnails use high contrast, a clear focal point, and minimal text.
- Generate the background with AI, but add headline text with a design tool.
- AI image tools are unreliable at rendering legible text directly.
- A/B test 2-3 concepts to find what drives higher click-through.
Generate and finalize a thumbnail
Generate a thumbnail background with an AI image tool, then add your headline text in Canva following the high-contrast, minimal-text principles.