Customize the thumbail renditions created in Update Asset Workflow

[Selva123]

Hi,

I need to override the DAM Update Asset workflow and customize the thumbnail renditions created.

Currently the OOTB feature is for any type of image format the renditions created are of .png format.

How to create the thumbnail renditions in other format like jpeg. 

Example : if I upload .png , .jpg , .gif etc i need to create the thumbnail renditions like below 

cqthumbnail.480.480.jpeg

cqthumbnail.1024.1024.jpeg

cqthumbnail.480.480.png

cqthumbnail.1024.1024.png

Thanks,

Selva

[smacdonald2008 · Accepted solution]

You can customize a Dam asset thumbnail by creating a custom DAM media handler. You get access to the input stream of the uploaded asset and you can perform tasks that meet your business requirements.

https://helpx.adobe.com/experience-manager/using/damhandler.html

[kevdrone]

I found this question that matches my own, but the answer is 8 years old and the link is dead. What is the 2023 answer to this, using AEM 6.5? I'd like to delete some of the OOTB renditions and create one for 1920 px on the long side, and a square crop to 640x640.