One concept at a time
Explainers
An explainer teaches one concept from something we measured, not from a search-and-summarize of what everyone else already wrote.
How to Use a Free Site Scan for Client Audits
Learn how freelancers and agencies can use a free page scan to triage client sites, explain findings calmly, and avoid overselling what a score means.
Which basic checks fail most often (follow-up)
A follow-up scan of 97 large sites ranks all 12 basic checks by how often they fail. FAQ schema and freshness fail most, and no home page passed everything.
What your Half Dev score means
Learn how the SEO, AEO and GEO scores are built, how partial credit works, and what a score does and does not tell you about your page.
Data piece: AI-readiness scan of 97 large sites
A scan of 97 large sites shows publishers block AI crawlers while SEO and developer sites publish llms.txt. Here are the numbers, the limits and the method.
llms.txt Examples: What to Put in Yours
See five complete llms.txt files for different kinds of sites, a blank skeleton to copy, and what to leave out. Adapt the closest one to your own site.
What FAQ Schema Does and Does Not Do
Google ended FAQ rich results in May 2026. Here is what FAQ schema still does, what it never did, and whether to keep it.
Structured Data for Beginners: What to Add First
Structured data describes your page to machines. Here is what to add first, the rules to follow and how to test it.
robots.txt, sitemap.xml and llms.txt: explained
Three files, three jobs. Here is what each one does, the mistakes to avoid, and which ones your site needs.
SEO, AEO and GEO: what is the difference
SEO, AEO and GEO sound like three separate projects, but most of the work is shared. Here is where they overlap, where they differ, and what to do first.
Does Blocking GPTBot Hurt Your Google Ranking?
Blocking GPTBot will not hurt your Google ranking. A wildcard rule might. Here is the difference.
How to Allow or Block GPTBot in robots.txt
The exact robots.txt rules to allow or block GPTBot, and the other OpenAI crawlers your rule will not cover.
Complete AI Crawler List for robots.txt
The AI crawler names worth knowing, what each does, and a starter robots.txt you can adapt.
What Is llms.txt, and Do You Need One?
llms.txt is a proposed file that points AI models at your best pages. Here is what it does, what it does not do, and whether it is worth publishing.