> Claude Watermark
Find and remove every trace AI leaves in your text
[ about ]
Claude Watermark finds the traces AI chat interfaces leave in text you copy out of them—provider HTML class names, zero-width characters, exotic spaces, typography—and removes them. Checking and cleaning are free, unlimited, and run entirely in your browser, so your text is never uploaded. An optional paid rewrite runs the passage through a model so it reads like you wrote it.
It does not claim to detect Anthropic's statistical watermark, because verification needs a key that has not been released. The detection engine is open source so you can check that claim yourself.