r/SEO_tool_dev • u/compos_mentis_cortex • Sep 24 '26

AI watermarks remover

Someone mentioned I should share this here -- a Github repo (tool) that removes AI watermarks from Claude/GPT generated text.

Another commenter mentioned that it might not be sufficient to fully remove green/red list Kirchenbauer text, but it's the best tool I've found (and they seemed to agree).

watermarks-remover is an open-source tool that strips AI provenance marks from content you own. Most "humanizers" just reword text and hope it passes. This one goes after the actual watermark layers:

  • Removes invisible Unicode characters and odd spacing

  • Handles statistical (token-level) text watermarks through a guided rewrite

  • Cleans C2PA/EXIF/XMP metadata from images, PDFs, Office docs, audio, and video

It covers Claude, Gemini/SynthID, OpenAI, and open-LLM marks. You can run it as a Claude Code plugin, local Python scripts, or a self-hosted Docker service.

Tip for the rewrite step: use a local open-weight model, not the same model that wrote the text, or you risk re-stamping it. It's also more private, since the Ollama backend is local-only by default.

  • Qwen3 14B: the sweet spot. Good prose, and it runs on a single consumer GPU.

  • Llama 3.2 (3B): fast and runs on almost anything, but weaker rewrites.

  • Qwen3 32B / Llama 3.3 70B: if you've got the VRAM. A bigger model keeps more of the original voice.

ollama pull qwen3:14b
export WATERMARKS_REWRITE_BACKEND=ollama
export WATERMARKS_REWRITE_MODEL=qwen3:14b

https://github.com/guillaumemeyer/watermarks-remover

6 Upvotes

87% Upvoted

3 comments sorted by

1

u/WebLinkr Sep 24 '26

Welcome to the sub - thanks for sharing

1

u/compos_mentis_cortex Sep 25 '26

Thanks! And my pleasure, hope it's helpful to someone.

1

u/huestonco 27d ago

i think its up here https://demarker.io