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GPT Watermark-Remover is a super-light, browser-only tool that finds and erases all the invisible ASCII/Unicode “fingerprints” AI models (like ChatGPT) sneak into their output—zero-width spaces, soft hyphens, word joiners, you name it.

This Chrome extension makes it easy to detect any text that has been written by GPT-3. Enter at least 50 characters of the given text and click submit. The extension will use the huggingface.co API to find out if your text extract was written by an AI.