Question
how to work on a PDF with Illustrator
Hello,
About this picture :

This picture is coming from a PDF. My goal would be to open the PDF inside Illustrator and work directly on the PDF inside Illustrator.
I know Photoshop is able to remove the yellow background with level function, but is it possible to do the same in Illustrator, and how ? Does Illustrator has something like "Levels" like in Photoshop :

