About this site
watermarkcleaner.net is a free, no-signup tool that removes simple watermarks from photos. It runs entirely in your browser. There is no app to install, no account to create, and no upload step.
What it does
You drop in a PNG, JPG, WebP, or HEIC photo. You paint over the watermark with your mouse or finger. The page replaces the painted pixels with surrounding colors and hands you the cleaned image back as a download. The output keeps the same format and extension as the input.
What it is good at
- Logos, text, and icons sitting on flat or near-flat backgrounds (sky, walls, paper, gradients).
- Small date stamps, signatures, or overlays on quiet parts of a photo.
- Anything where there are clean pixels nearby to copy from.
What it is bad at
- Watermarks across faces, fine textures, or sharp edges. The algorithm samples nearby pixels and does not "understand" what is behind the mask.
- Watermarks baked into the source image (where there are no clean pixels to copy from).
- Repeating or multi-layer watermarks where every layer overlaps busy content.
How it works under the hood
The page ships a single JavaScript file. When you start, that script loads your image into a , lets you paint a mask, and then runs an inpainting algorithm called the Telea fast-marching method (Telea, 2004, "An Image Inpainting Technique Based on the Fast Marching Method"). It is the same family of algorithms used in OpenCV's cv.inpaint. There is no neural network, no server roundtrip, and no third-party API call.
Because the work is local, the speed depends on your device, not on our server. On a typical laptop a 2000-pixel photo finishes in under a second.
Who it is for
Anyone with a photo they have the right to edit and a watermark they want gone. Common uses: cleaning up stock photos the user has licensed, removing your own watermark from a draft, or tidying scanned documents.
It is not a tool for stripping other people's watermarks to steal their work. If you did not shoot the photo, you do not own the photo, and the watermark is still there for a reason.
Who made it
The site is built and maintained by the watermarkcleaner.net team. We are not a company; it is a small site run by a single operator who would rather stay behind the tool. Real names and company details are intentionally not listed. For anything that needs a real person to reply, use the contact page.
How it is funded
The site is free. Running costs (hosting, domain) are covered by advertising shown on some pages and by occasional affiliate links to products we actually use. Nothing on the site is paywalled, nothing is sold. The full breakdown of who we work with is on the privacy page.
How to send feedback
Bug reports, feature requests, and "this didn't work on my photo" notes are all welcome. Use the address on the contact page. If you can attach a small sample image (the kind that gave you trouble), that helps a lot.