Obsolete parameter preferwebp=true added by NextGenDMImageURIBuilder causes loss of image compression

[pahupe]

Bug Report

1. The parameter preferwebp=true is no longer a valid Dynamic Media w/Open APIs parameter (Nov 2025)

2. Despite no longer being a valid API parameter, in some cases, it causes a loss of image compression (as far as we can tell in combination with width and dpr parameters. Example: https//delivery-...?width=448&preferwebp=true&dpr=2)

Current Behavior

Images with this parameter (in combination with others) are not compressed (to WebP or AVIF). When the parameter preferwebp=true is removed, the image is compressed again

Expected behavior/code

1. As the parameter is obsolete, it should not be generated by com.adobe.cq.wcm.core.components.internal.models.v3.NextGenDMImageURIBuilder

2. Images should always be compressed (given the right accept request header), no matter whether a query parameter preferwebp is provided or not

Environment

AEM CS: 2025.11.23385
Core Components version 2.30.2
Java JRE 11

Possible Solution

Additional context / Screenshots