Mark documents as confidential, draft or copy, or brand them with your logo. Type the watermark in Arabic or English or choose an image, set its size, angle and opacity, and place it once in the middle or repeated across every page.
Yes. Arabic text is shaped and written right to left correctly, in grey, red, blue or black.
Yes. Choose Image or logo and add a PNG or JPG. A white background can be removed automatically so only the logo shows.
It's part of the page drawing, so it can't simply be switched off, but a determined person with editing software could still remove it. For sensitive files, also add a password with Protect PDF.
Everything happens in your browser. Your files are never uploaded to a server, so nobody else can see them.