Why is my export watermarked?

The watermark means you're on the free preview. Every tool lets you do the full job and download a watermarked version so you can inspect the result at full size — before spending anything. It's not a broken or lower-quality file; it's the real thing with a "PREVIEW" overlay.

To get the clean version, unlock the book — one payment, every tool — then export again. Your book's page lists the files you downloaded before paying, under get your clean copies, so you know which ones to download again. The overlay is gone and nothing else changes. See Can I see my cover before I pay?

If you've already paid and still see a watermark, see I paid, but the tool is still locked.