A watermark says who made a picture without getting in the way of it. Write words on it -- a name, a studio, a URL -- or give the address of a logo and have that drawn instead. Drop in an image, put the mark in a corner or run it from one corner to the other, then download the result.
Drop your image here
One at a time here, because where a watermark should sit is a judgement about the picture in front of you rather than a setting you make once for twenty.
The bottom right is the usual choice and stays out of most compositions. Corner to corner, or repeated across the whole picture, is much harder to crop away.
One file, marked and compressed in the same pass.
Step by step, with screenshots: How to add a watermark to a photo
The bottom right is conventional and keeps out of the way of most photographs. If the point is to make an image awkward to reuse, running the words corner to corner or repeating them over the whole picture is far harder to crop out than a single corner.
No. The mark is drawn by your browser, on a canvas, before anything is uploaded. A logo fetched from a web address comes through our own server so the browser is allowed to draw it, and it is never published anywhere. The marked copy is then sent for optimisation, just like every other image processed here.
Yes, if it is already on the web. Paste its address and it is fetched, drawn on your picture in your browser, and never stored. A PNG keeps its transparent background, which is usually what a logo wants. Uploading one from your own device is not possible yet.
Each colour is drawn with a thin outline in the opposite shade, so white lettering keeps a dark edge and dark lettering a light one. That carries most pictures. Where it does not, change the colour or raise the strength.
No, and nothing here claims to. A visible watermark makes casual reuse obvious and inconvenient. It is not protection: anyone determined can crop it off or paint it out.
The size is a proportion of the picture's shorter side rather than a number of pixels, so one setting looks the same on a small image and a large one. Six per cent is a readable starting point.
Free Online Image Optimizer