I'd like to change the opacity of a picture. Which API should I use for this?
Thanks in advance
What are you trying to do? You can change the opacity of a picture in a number of Adobe applications; Photoshop, Illustrator, InDesign... it really depends on how you intend to use it.
In photoshop you can change the opacity of the layer the photo is on or the image itself. Please provide a little bit more information.
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