Add a watermark to a photo

A single corner watermark, yes, in about five seconds. That is exactly why the tile option exists: it repeats your mark diagonally across the entire image, edges included, so every possible crop still contains it. For anything you genuinely do not want lifted, tile it.

No. The text is blended into the actual pixels at your chosen opacity, so after export there is no separate layer to delete. Removing a tiled mark would mean manually repainting large parts of the photo, which is far more work than the image is usually worth to a thief.

Yes, and that is the workflow this tool is built around. Drop the entire shoot in one go, and the same mark is stamped on every photo at the same relative size, then download everything as one ZIP. Because size is set as a percent of width, portrait and landscape frames come out looking consistent.

Around 40 to 60 percent opacity is the sweet spot: clearly visible without burying the photo. For size, 4 to 6 percent of the image width reads well on most photos; go smaller for a subtle corner credit, larger for preview images you want unmistakably claimed.

Text only for now, in any color. A logo overlay is on the roadmap, and it is one of the most requested additions, so tell me via the contact page if you need it and it moves up the list.

Safer than any upload-based watermark site, because the photos never leave your computer. The marking happens in your browser through the Canvas API, so there is no server copy of the unwatermarked originals anywhere, which is the whole risk with online tools and pre-release work.