Watermark
1 min read · Reviewed 17 Oct 2026
In short
A marker showing content was machine-generated.
In plain English
A signal embedded in AI output — sometimes visible, often hidden in the file — indicating it was produced by a model.
A real example
Several image tools now embed provenance data. Some platforms read it and label the post automatically.
Why it matters
Detection is unreliable and easily stripped, so do not rely on it either way. Disclosing that you used AI is more robust than hoping a watermark does it for you.
