Imaging Transcoding Library

In Experience Manager user interface, select Tools > Workflow > Models.

From the Workflow Models page, open the DAM Update Asset workflow model in edit mode.

Open the Process Thumbnails workflow process step. In the Thumbnails tab, add the MIME types for which you want to skip the default thumbnail generation process in the Skip Mime Types list.
For example, if you want to create thumbnails for a TIFF image using Imaging Transcoding Library, specify image/tiff in the Skip Mime Types field.

In the Web Enabled Image tab, add the MIME types for which you want to skip the default web rendition generation process in Skip List. For example, if you skipped MIME type image/tiff in the above step, add image/tiff to the skip list.

Open the EPS thumbnails (powered by ImageMagick) step, navigate to the Arguments tab. In the Mime Types list, add the MIME types you want Imaging Transcoding Library to process. For example, if you skipped the MIME type image/tiff in the above step, add image/jpeg to the Mime Types list.

Remove the default commands if any exist.

Toggle side panel and from the list of steps add SWitchEngine Handler.

Add commands to the SwitchEngine Handler based on your custom requirements. Tune the parameters of commands that you specify to meet your requirements. For example, if you want to preserve the color profile of your JPEG image, add the following commands to the Commands list:

• SWitchEngine -input ${file} -destMime PNG -resize 48 -output ${directory}cq5dam.thumbnail.48.48.png
• SWitchEngine -input ${file} -destMime PNG -resize 140x100 -output ${directory}cq5dam.thumbnail.140.100.png
• SWitchEngine -input ${file} -destMime PNG -resize 319 -output ${directory}cq5dam.thumbnail.319.319.png
• SWitchEngine -input ${file} -destMime JPEG -resize 1280 -preserveCMYK -output ${directory}cq5dam.web.1280.1280.jpeg

(Optional) Generate thumbnails from an intermediate rendition using a single command. The intermediate rendition acts as source to generate static and web renditions. This method is faster than the earlier method. However, you cannot apply custom parameters to thumbnails using this method.

To generate web renditions, configure parameters in the Web-Enabled Image tab.

Sync the updated DAM Update Asset workflow model. Save the workflow.