How SEOmatic Marks Text and Images Its AI Wrote (EU AI Act)
Updated
Why It Exists#
Article 50 of the EU AI Act asks that text and images made by AI carry a machine-readable mark, so that they can be recognised as AI-made. SEOmatic adds that mark for you.
What Gets Marked#
| What your agents made | The mark |
|---|---|
| New text of 150 words or more on an existing page, on WordPress or Shopify | An HTML comment in the page's code, starting <!-- seomatic:ai-generated, with a link to the checker. Visitors do not see it |
| The same on other platforms | A record kept by SEOmatic only. Nothing is added to your page |
| New articles | The article's structured data says it was made with AI (digitalSourceType) |
| Images | A note inside the image file (IPTC metadata) saying it was made by AI |
Not marked: short changes such as titles and descriptions, an undo, text you wrote yourself and asked your agent to put in word for word, and changes no AI model wrote. When SEOmatic cannot tell your words from its own, it does not mark the text, so your own writing is never labelled as AI.
Check a Text#
The comment in a marked page includes a link to SEOmatic's public checker. It confirms that SEOmatic's AI wrote the text, when, and with which model, with a signature as proof. It never says for whom: no workspace and no page address. If a text is not found, that proves nothing about who wrote it.
Export the Record#
In Settings > AI Agents > Rules, on the Data Residency row, click Export the compliance trail. You get every agent change in the period with when it was approved, by which account and from where (dashboard, email, chat and so on), by which approval mode, the quality review result, the AI model used, and whether it was undone. If you named a Responsible Editor in the same section, the export names them at the top. It is available on every plan.
- Can I turn the mark off?
- No, there is no setting for it. The mark is invisible to visitors and changes nothing on how your page looks.
- Will a label like "written by AI" appear on my site?
- No. SEOmatic adds no visible label. If you want one, add it yourself.
- I edited a marked text heavily. Does the mark stay?
- The comment stays in the page's code until you remove it. You can delete it in your editor's code or HTML view.
Was This Article Helpful?
Still need help?Email contact@seomatic.ai with your site address and a screenshot. A person replies, usually within one business day.


