Building a text watermark remover for Claude, rewriting works best

Imaginary_Dinner2710 · reddit · 2026-08-23

The author details their technical journey building a watermark remover for Claude, experimenting on the SynthID Text scheme. They found that formatting cleaning and back-translation fail, while the DIPPER algorithm removes marks but corrupts facts 25% of the time. The most effective method is using an unmarked model to fully retell the text, achieving 100% removal and fact preservation. The author warns against verbatim copying during rewrites and provides open-source code and a live demo.

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