learn how to use ChatGPT's native image generation to create custom YouTube thumbnails

In this tutorial, you will learn how to use ChatGPT's native image generation to create custom YouTube thumbnails instantly — using just simple text prompts, reference images, or even rough sketches.

Step-by-step:

Upload a reference image of yourself or the main subject in ChatGPT, then write a detailed prompt describing exactly what you want in your thumbnail.
For style consistency, upload both a reference thumbnail you like and your subject image, then ask the AI to maintain the style while swapping elements.
Refine results with follow-up prompts or use the edit feature to highlight areas needing changes.
For maximum creative control, upload a rough sketch showing your layout, along with any reference images you want to include.

You can also use an image expander tool like Canva or Adobe’s Generative Fill to adjust your thumbnail for perfect YouTube dimensions (16:9).

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