Question 1

What is an AI watermark?

Accepted Answer

Two separate things. The first is character-level: zero-width and format-control codepoints inserted into the text, which have no visible glyph but change the underlying bytes. The second is statistical: the vocabulary and sentence rhythm typical of model output. The first can be removed exactly. The second can only be reduced by rewriting, which is why this tool does both.

Question 2

Can invisible characters really be hidden in text?

Accepted Answer

Yes, and they survive ordinary copy-paste. Zero-width characters, Unicode tag characters and variation selectors all render as nothing while remaining fully present in the data. Run the free scan on any text and you will see the exact count.

Question 3

Does the rewrite change my meaning?

Accepted Answer

It is instructed not to. Facts, figures, names, dates, quotations, citations, URLs, paragraph structure and claim strength are all held fixed, and any sentence without a marker is returned verbatim. Read the result before you use it — that is true of any tool that touches your writing.

Question 4

Will this defeat a specific AI detector?

Accepted Answer

We make no claim about any named detector. Detectors are proprietary, they change without notice, and they disagree with each other. What we do state precisely: the character-level markers are removed exactly and verifiably, and the wording markers listed in your scan report are what the rewrite targets.

Question 5

Why is the scan free?

Accepted Answer

Because it costs us almost nothing. It is exact character matching, not a model call, so there is no reason to charge for it. You only spend words when you ask for an actual rewrite.

Question 6

What happens to my text?

Accepted Answer

It is processed to produce your result and saved to your history so you can retrieve it later. You can delete any entry. It is never used to train a model.

Question 7

How is usage counted?

Accepted Answer

By word, against the input text. Scans are free and never counted. Each plan also caps the words in a single request, so long documents need a higher tier or splitting up.

Question 8

Can I use this on text I wrote myself?

Accepted Answer

Yes, and plenty of people do. Human writing picks up invisible characters from PDFs, CMS editors and word processors, and the typographic punctuation cleanup is useful on its own. The scan will tell you whether there is anything there.

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