"“Adding schema produced no major uplift in citations on any platform,” Ahrefs wrote."
"“The company tracked 1,885 web pages that added JSON-LD schema between August 2025 and March 2026, matched them against 4,000 control pages, and measured citation changes across Google AI Overviews, AI Mode, and ChatGPT.”"
"“It found there was no statistically significant finding that it made any difference.”"
"“In fact, the data showed that AI Overviews there was a 4.6% decline, which is small but statistically significant relative to matched control pages. But with AI Mode and ChatGPT ‘treated pages performed slightly better than control pages on average, but the differences are small enough that they could easily be random noise across thousands of URLs.’”"
A study tracked 1,885 web pages that added JSON-LD schema between August 2025 and March 2026 and matched them against 4,000 control pages. Citation changes were measured across Google AI Overviews, Google AI Mode, and ChatGPT. The results showed no statistically significant evidence that schema increased citations on any platform. Google AI Overviews showed a 4.6% decline in citations for treated pages compared with control pages, which was small but statistically significant. For AI Mode and ChatGPT, treated pages performed slightly better on average, but the differences were small enough to be consistent with random noise across thousands of URLs.
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