I create educational products and sell at an online marketplace. I buy clipart and use this.
I create using Pages on my Mac, I then press Print, PDF, open in Preview, grab the thumbnail and combine each page to form a document. On completion, I export the document to PDF.
I am currently trialling Adobe Acrobat Pro and have followed the steps to secure the document. I have included a screenshot of security options I have set. I do save the settings and the PDF says by the file name SECURE. I then zip this with another secure file as I need to create my products in US letter and A4 so I zip together and then I upload to the website.
However when I have downloaded I can still lift the clipart. I have tried this on 3 different Macs and it still can be lifted. Does Adobe not work with Pages, does zipping affect the security issues or is it that I open on macs and they can override the security settings?
I have read somewhere that the Preview application overrides adobe security settings. I have not bought Adobe is there another PDF application for Macs that includes security settings I must lock the clipart or I am liable for copyright.