Unmark
unmark.dev
Unmark
unmark.devA free browser-based tool that rewrites AI text to erase SynthID and statistical watermarks while stripping hidden characters.
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According to AlphaMoat, in the latest data month Unmark (unmark.dev) received 0 monthly visits — ranked #0 of 17,424 AI websites with traffic data, and #0 of 674 in Writing.

Monthly Visits
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Overall Rank (17,424)
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Writing Rank (674)
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Top Market
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What is Unmark

Product Overview

Unmark is a free, private tool that removes AI watermarks from text directly in your browser. SynthID and other statistical watermarks hide a detectable fingerprint in AI text; Unmark rewrites it away while keeping your meaning, and flags the formulaic AI phrases worth editing out. It works with text from ChatGPT, Claude, Gemini, Copilot or anywhere else, and strips every invisible character in the same step as the rewrite.

Key Features6 items
  • 01Rewrite strength options from light to aggressive
  • 02Removal of SynthID and statistical watermarks
  • 03Stripping of invisible characters, tags and private-use symbols
  • 04Option to strip hidden characters without rewriting
  • 05Normalization of spaces, bidi controls and homoglyphs
  • 06No account or setup — paste, remove, copy

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Data month: — · Visit figures are third-party traffic estimates aggregated monthly — best for scale and trends. Multiple domains of the same product are merged. See methodology.