How this works
There is no reliable way to detect an arbitrary watermark automatically, so you mark it once by drawing a box over it. We then paint over that same box - either by sampling the colour around it and blending a patch in (best for a logo or text stamp on a plain or lightly textured background), or by heavily blurring the area (safer for a busy photo, though the outline may still be faintly visible).
Best results
- Draw the box a little larger than the watermark itself so no edge peeks out.
- "Auto blend" works best on a plain or gently textured background - product photos on white, scanned documents, certificates.
- For a watermark over a busy, detailed photo, "Blur" usually looks more natural than a flat colour patch.