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01 / DetectFree watermark scan
Paste text and run one free detection. The popup reports the watermark-detected percentage for that passage.
Live detectorFree detector · One scan · Remove watermarks
Free AI watermark detector / no signup
Free AI watermark detectorand text checker.
Paste up to 500 words, run one free AI watermark scan, and see the watermark-detected result in seconds. Then remove watermarks with StealthGPT. No account needed.
- Free AI watermark detector
- One scan, no signup
- Remove with StealthGPT
FREE1 scan / 500 words / no signup
Live detector01 / 01 free scan
Detect AI watermarksOne free scanNo signupThen remove with StealthGPT
What the free check includes
Detect the watermark. Then remove it.
A useful free AI text checker shows the watermark-detected result immediately and gives you a next step: strip the watermark in StealthGPT.
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02 / ResultClear high-signal read
The result is labeled as watermark detected, not official vendor verification, so you know what you are looking at.
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03 / RemoveStealthGPT watermark remover
After the scan, open StealthGPT to rewrite the draft and remove AI watermarks from the wording.
Fast free check
One free AI watermark detector flow.
The scan is limited to one successful request per browser and domain. Text is sent only when you press the button, and the API key stays on the server.
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Paste up to 500 words
The browser counts words before submission and the server validates the limit again. Your passage is never placed in a URL.
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Run the free detector
A same-origin POST calls the protected route, which sends the text to StealthGPT with caching disabled and a timeout.
- 03
Remove watermarks in StealthGPT
The result popup always includes a StealthGPT CTA so you can strip the watermark after that first detection.
Questions
Free AI watermark detector FAQs
01Is this AI watermark detector free?+
Yes. You get one free watermark detection per browser and domain, up to 500 words, with no account. After that, continue in StealthGPT to remove watermarks.
02What does the watermark-detected percentage mean?+
It is this checker’s watermark-detected result for the scanned passage. It is not proof of authorship and not official Anthropic, OpenAI, or Google verification.
03Will I see a result popup after I scan?+
Yes. After the first successful detection, a result modal opens with the watermark-detected score and a StealthGPT CTA to remove watermarks.
04Is my API token exposed in the browser?+
No. The browser calls this site’s API route. Only the server reads STEALTHGPT_API_KEY and sends the authenticated request to StealthGPT.
05Can I remove the watermark after the free scan?+
Yes. The result modal, persistent result panel, and footer all link to StealthGPT’s watermark remover. That is how you strip the watermark from the wording.