When I want to "protect" a PDF, I print it as a TIFF and then PDF that document. It's less "protecting" than "making it difficult to alter or copy-paste from," but it works. (Also good for ensuring your redaction blobs can't be moved.)
When I want to "protect" a PDF, I print it as a TIFF and then PDF that document. It's less "protecting" than "making it difficult to alter or copy-paste from," but it works. (Also good for ensuring your redaction blobs can't be moved.)