seoTechnical SEO and AI SEO Notes
Field notes from Dmytro Verzhykovskyi's technical SEO and AI search work: what broke, how the fault was found in Search Console, server logs, or code, and what fixed it. Every number in the notes comes from a measured source, such as Search Console, CDN logs, or a URL-by-URL test, and each note names the limits of its data.
Latest Technical SEO Notes
The notes below are listed newest first, and each one ends with a checklist that a developer or an in-house SEO team can run on their own site without outside help.
- How a Firewall Rule Blocked AI Crawlers That robots.txt Allowed (September 24, 2026). A rule against fake browsers returned 403 errors to Amazonbot and Meta's AI crawler on every HTML page for more than a week, while robots.txt allowed both and llms.txt checks passed.
- What AI Crawlers Actually Do With llms.txt: Logs From 19 Sites (September 24, 2026). Which AI crawlers actually read llms.txt files and a plain-text query endpoint, how many of them were fakes, and why bots copied the example placeholder word for word.
- Website Migration Checklist: Why Status Codes Aren't Enough (September 24, 2026). A WordPress to Laravel migration passed a status check on every URL while almost every page carried the wrong canonical tag, and a page-by-page comparison of heads caught it before the final launch.
- How to Track AI Overviews and AI Mode in Google Search Console (September 24, 2026). What the generative AI performance report in Search Console counts, why its impressions are already inside the web search totals, and what a full query export reveals that the interface hides.
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