Fill Generative Prompt fill-gen-prompt

Provides a text suggestion to the output of fit=fill&fill=gen. It accepts URL-safe string values but can also be base64 encoded (fill-gen-prompt64). The shorthand version of this parameter can also be used (fill-gen-prompt).

Generative fill with no prompt: https://assets.imgix.net/example-images/generative-fill/man-standing-on-cliff.jpg?auto=compress,format&w=600&h=900&fill=gen&fit=fill

Generative fill using fill-gen-prompt=eagle%20flying%20around: https://assets.imgix.net/example-images/generative-fill/man-standing-on-cliff.jpg?fill=gen&fill-gen-pos=left&fill-gen-prompt=eagle%20flying%20around&fit=fill&w=600&h=900&auto=compress,format

Limits

Guarantee of keyword output

While fill-gen-prompt suggests what the output generative fill should look like, it does not guarantee that the prompt keywords will be used in the final fill.

For example, we regenerated the image using an identical prompt but with a different seed value, but it contained none of the prompt keywords (eagle flying around): https://assets.imgix.net/example-images/generative-fill/man-standing-on-cliff.jpg?auto=compress,format&fit=fill&w=600&h=900&auto=compress&fill-gen-seed=1&fill-gen-prompt=eagle%20flying%20around&fill=gen

Character limits

There is no direct character limit for prompt values, though we recommend keeping your image URLs under 1024 characters.