Pdf shows white background instead of
Hi,
I have a problem whit all my pdfs that they have white background instead of transparent, the same thing works for svg and eps. Png is transparent as it should, but not the pdf, even thou I insert the pdf somewhere, the background isn't there, but preview is showing white background. I don't know why and Option+Coman+B doesn't work.
Thank you very much for your help.
MacBook Pro 13″, macOS 10.12