Whether a watermark can be removed and whether it should be are different questions, and only one of them is about software. This page is the second one.

A watermark is usually a statement of ownership

Photographers, illustrators and stock libraries add watermarks for a single reason: so an image can be shown publicly without being usable commercially without payment. Removing that mark does not transfer any right to the picture. The copyright sits with whoever made it, watermark or no watermark, and stripping the mark to use the image is straightforward infringement — often treated more seriously than plain copying, because removing rights-management information is separately prohibited in several jurisdictions, including under the DMCA in the United States.

"It was on the internet" and "there was no copyright notice" are not defences. Neither is the fact that a tool made it easy.

Cases that are usually fine

  • Your own work. You exported a watermarked draft and lost the clean original, or a client returned a marked-up proof. It is yours.
  • Images you generated. Output from a generator you used under its terms, where the mark is the tool's branding rather than someone else's claim. Check the terms — some grant commercial use, some do not.
  • Licensed images. You bought the licence and were sent the preview copy by mistake. Ask for the clean file first; it will be higher quality than any repair.

Cases that are not

  • A stock preview you have not licensed. The watermark is the payment barrier.
  • Another photographer's or artist's work, for any purpose including "just personal use" — reposting is publishing.
  • Anything you intend to pass off as your own, or resell.
  • News agency or press photographs, which are licensed per use and monitored closely.

The provenance question

There is a newer category worth thinking about separately: marks that exist to say "this was generated by a machine". Those are not ownership claims, they are honesty signals — for readers, for platforms, and increasingly for the law. Removing one is not a copyright problem so much as a truthfulness one, and the answer depends entirely on what you do next. Cleaning a generated image for a personal wallpaper is nothing. Presenting it as a photograph of something that happened is a different act, and worth not doing.

If you are unsure whether your case is on the right side of this line, the fastest resolution is usually to ask the person who made the image. Most will say yes to reasonable requests, and a yes costs you nothing.