Watermark an image

A watermark is a small claim of ownership laid over an image, so it can be shared without being passed off as someone else's or used without credit. The art of it is making the mark hard to remove while keeping the image worth looking at. This guide covers the layout choices, how visible to make it, and where a watermark genuinely helps.

Tiled versus single, and why it matters

A single watermark, usually a signature or logo tucked into a corner, is clean and unobtrusive. It works when the goal is a credit rather than hard protection, because a corner mark is also the easiest thing in the world to crop off.

A tiled watermark repeats the text across the whole image, normally on a diagonal. It is far harder to remove, since cloning it out would mean repairing the picture everywhere at once. That is the layout to reach for when you are sharing work you do not want lifted.

The angle matters too. A diagonal repeat sits across the natural lines of most photos, which makes it both harder to crop around and harder to paint out cleanly.

Choosing the opacity

Opacity is the dial between protection and looks. Too faint and the mark is easy to ignore or erase; too strong and it overwhelms the image you are trying to show off.

For most work, a mark somewhere around 40 to 60% opacity reads clearly without dominating. Lower it if the watermark is just a quiet credit on your own portfolio; raise it if the image is genuinely at risk of being taken.

Colour plays into this as well. White or light grey sits well over darker photos, while a dark mark shows up better on bright, airy images. Match the watermark to the picture rather than using the same colour every time.