How StraticSEO marks AI-generated content

Last updated: 11 November 2026

StraticSEO writes texts and prepares images with the help of AI. This page describes how those outputs are marked as AI-generated in a machine-readable way, as Article 50(2) of the EU AI Act requires from 2 December 2026, and how to check the marks.

1. What StraticSEO marks

Marks apply to content StraticSEO generates from 11 November 2026.

The marks are applied to the following outputs that StraticSEO generates for publication:

  • articles and pages
  • posts, replies to reviews and the description of the profile in Google Maps
  • formats for social media and the newsletter
  • images for articles and posts

2. Texts

The model that writes them (Anthropic) embeds an invisible watermark in the text, according to the provider’s documentation. Very short texts, such as many replies to reviews, may be too short for the watermark to be detected. In the HTML of an article there are also a comment ai-generated: StraticSEO and the attributes data-ai-generated and data-ai-system on the article’s wrapper. Where the article’s structured data has an entry for the text itself (such as Article, WebPage or FAQPage) and the site keeps it, that entry also has the digitalSourceType field.

3. Images

According to Google, its SynthID watermark is embedded in the pixels. StraticSEO writes the IPTC field “DigitalSourceType” (the value for media made by a trained algorithm) into the images it generates for articles. Photos for Business Profile posts may come without it. Google may remove the metadata from photos of a Business Profile post when it accepts the file; SynthID stays, according to Google.

4. What is not marked

Short texts (meta titles and descriptions, alternative texts, service names) and code (the structured data itself is not marked as AI-generated; it only carries the digitalSourceType field of the text it describes), in line with the European Commission’s guidelines.

5. How to check

An image: open it in the Gemini app (SynthID). The IPTC field, where the file carries it: any metadata reader. A text: the Anthropic detector available to verified parties. An article’s markers: the HTML source of the page (the digitalSourceType field only where the article’s structured data has an entry for the text itself and the site keeps it).

6. A visible label for readers of articles

The option “Text prepared with the help of AI” under the title is set per project and is on by default for projects in health, finance and law. The obligation from Article 50(4) rests on whoever publishes the text.

7. Removing the marks

The terms forbid removing the marks on purpose, and the ban applies from 15 December 2026: https://straticseo.com/terms

8. Contact

Write to wojtek@straticseo.com, Paweł replies.