Fill Generative Prompt
fill-gen-prompt
Enabling Capability
This parameter can be disabled/enabled in the Advanced Settings of your Source.
All rendering capabilities are enabled by default.
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).
Prefer Base64 Variant
Imgix recommends using the Base64 variant version of this parameter to make encoding values easier.
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.
Character limits
There is no direct character limit for prompt values, though we recommend keeping your image URLs under 1024 characters.