Add a Watermark to a Photo

Yes. Besides text you type yourself, you can choose your own image — a logo with a transparent background works best, so a PNG or WebP with an alpha channel. You set the position and the opacity. The logo is processed entirely in your browser too: it does not reach our server and is not kept anywhere, so loading an unpublished brand logo here is not a problem.

It depends on what you are after. For recognition under a published photo, a low opacity of around 20 to 35 percent works: visible enough to show the source, discreet enough not to spoil the image. To genuinely discourage reuse — for a preview file sent to a client, say — a higher opacity and a position across the middle of the subject is more effective; a watermark in a corner is gone with one simple crop.

No, neither of them. The photo and the logo are read by your browser, combined on a canvas, and the result is offered as a download. Not a single byte reaches our server, nothing is logged and nothing is kept. That is exactly why this tool is usable for material that is not public yet.

Be realistic: a watermark is a deterrent, not a lock. A watermark in a corner disappears with a crop, and a semi-transparent watermark over a plain background can be removed reasonably well with image editing. What a watermark does do is make ownership clear, discourage casual reuse, and help demonstrate where a file came from if there is a dispute. For imagery that genuinely must not leak, not publishing is the only reliable measure.