New AI models weave a statistical pattern into their word choices. You can't see it, it doesn't change the meaning — but a matching detector can spot it. Files get C2PA "digital receipt" metadata instead.
Invisible ink is in the text now
Does your text have a hidden AI watermark?
Since August 2026, Claude and Gemini weave an invisible statistical fingerprint into everything they write. Others hide white text, zero-width characters and tracking metadata to flag AI content. Paste your text below and find out what's really in it — free, no signup.
100% in your browser. Your text is never uploaded on the free scan.
The quick brоwn fox jumps over the lazy dog and nobody can see it happen.
Exhibit BHumanizer Unlimited
liveRewrites AI text so it reads human and beats detectors — and destroys statistical watermarks by regenerating the wording. Try it below.
0 characters
Humanized output
The invisible-ink problem, in plain English
The text mark survives copy-paste and light edits. It does not survive heavy rewriting, paraphrasing or translation. File metadata dies on re-save or a screenshot.
A detected mark only proves the model touched the text — not that it wrote it. And no mark ≠ no AI. It's a weak hint, and it's beatable. That's the gap we help you close.
Simple pricing
Scan for free forever. Pay only when you need to fix it.
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- Unlimited hidden-watermark scans
- Strip invisible characters
- Hidden-text & homoglyph detection
- AI-detector risk score
- Humanize / rewrite
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or $74.99/yr — save 38%
- Everything in Free
- Humanize & rewrite to beat AI detectors
- Live AI-detector risk score
- Watermark-free generation
- Unlimited use (within reason)
Benchmarks
We run our humanized output through the detectors people actually use, and publish what passes.
| Detector / test | Raw AI text | After Humanize |
|---|---|---|
| GPTZero | Flagged | Coming soon |
| Originality.ai | Flagged | Coming soon |
| Turnitin | Flagged | Coming soon |
| Copyleaks | Flagged | Coming soon |
| Claude statistical watermark | Present | Coming soon |
Benchmark harness ships with the paid Humanizer. Numbers will be live, dated, and reproducible — no cherry-picking.
Frequently asked questions
What is an AI watermark in text?
An AI watermark is a hidden signal embedded in generated text so a matching detector can later recognize it. It comes in two forms: a statistical pattern woven into word choices (invisible, survives copy-paste), and visible-layer tricks — zero-width Unicode characters, homoglyph letter swaps, and hidden white text.
How do I check text for a hidden AI watermark?
Paste your text into the free scanner at the top of this page. It runs entirely in your browser and flags zero-width and invisible characters, Cyrillic/Greek look-alike letters, unusual whitespace, and hidden or white text carried in from the source you copied. Nothing is uploaded on the free scan.
Can an AI watermark be removed?
Hidden characters can be stripped instantly — the free scanner does that with one click. The statistical watermark in the wording itself cannot be deleted in place; it only disappears when the text is substantially rewritten. That regeneration is what the paid Humanizer does.
Which AI models watermark their text?
As of August 2026, Claude and Gemini embed a statistical fingerprint in generated text, and several writing tools add invisible Unicode markers or metadata. Image, audio and video generators use C2PA "content credentials" metadata instead, which dies on re-save or screenshot.
What are zero-width characters?
Zero-width characters are Unicode code points — like U+200B (zero-width space) and U+2060 (word joiner) — that render as nothing at all. Because they're invisible, they can be arranged between normal letters to tag, fingerprint or even smuggle whole hidden messages inside ordinary-looking text.
Does a watermark prove text was written by AI?
No. A detected watermark only proves an AI model touched the text at some point — not that it wrote all of it. And the absence of a watermark proves nothing either, since marks don't survive heavy editing. Treat any detector's verdict as a weak hint, not evidence.