1. Home
2. Reference documentation
3. Image Optimizer

Enables features that are disabled by default.

Syntax

enable={value}

Allowed values

Notes

1. Image upscaling is discouraged because it increases both the file size and delivery time of the image to the end user with no visual improvement. We recommend handling upscaling on the client-side (e.g., using a web browser or native application).
2. The upscale value must be used with the width, height, or dpr parameters to see any effect in the output image.

Examples

Click the links to view the transformed image using a demo Fastly IO service.