Watermark Images

What a watermark actually achieves

Be realistic about this. A visible watermark does not prevent copying — anyone can crop it out, clone it away, or in many cases have software remove it automatically. If your images must not be reused, a watermark is not the mechanism that will stop it.

What a watermark does well is attribution and friction. It makes casual reposting carry your name along with the image, so the work stays traceable back to you. It discourages the lazy majority who would rather find an unwatermarked image than edit yours. And on proofs sent to a client before payment, it makes the file obviously unfinished.

Those are real benefits. They are just different from protection, and choosing settings works better once you are clear which you are after.

Choosing position and opacity

A corner watermark at low opacity is the polite option: visible if you look, unobtrusive if you do not, and easy to crop out. It suits portfolio work where attribution matters but presentation matters more. The bottom right is conventional because it is where the eye lands last.

A centred watermark is harder to ignore and harder to remove without damaging the image, which makes it right for client proofs and for anything you genuinely do not want reused as-is.

Tiling repeats the text across the whole frame. It is the most resistant to cropping — there is no clean region left — and by far the most intrusive. Reserve it for previews and proofs; it ruins an image as a piece of presentation.

Opacity around 30 to 50% usually reads clearly without dominating. Below 20% it becomes decorative rather than legible; above 70% it competes with the photograph.

Staying legible on any image

The hard problem with a text watermark is that photographs are not uniform. White text vanishes against a bright sky; black text vanishes in shadow. A single colour choice cannot work on every image in a varied batch.

This tool draws a contrasting outline behind the fill for exactly that reason — white text carries a dark outline and black text a light one — so the mark stays readable across both bright and dark regions of the same photograph. It is the same technique subtitles use, and for the same reason.

Text size is set as a percentage of the image's shorter side rather than in pixels, which means a batch containing both a 900-pixel web image and a 6000-pixel original comes out looking consistent. Setting it in pixels would make the watermark enormous on one and invisible on the other.

What to put in the text

The most useful watermark is one that leads somewhere. A bare name is less valuable than a domain, because a domain tells a viewer where to find more of your work without needing to search.

A conventional copyright line is © followed by the year and your name. The symbol carries no additional legal weight in most jurisdictions — copyright exists from the moment of creation — but it makes the claim explicit and removes any argument about whether reuse was innocent.

Keep it short. Long text has to be set small to fit, and small text is the first thing lost when an image is resized for a social feed.