The Open Index · Audits
Twelve checks. Thousands of websites. One open dataset.
Next, we audit websites by industry and publish the aggregate. Here is exactly what we will measure, how, and what you will see. No results are shown yet, because we show only what we have verified.
- 19graded sources
- 12industries
- 10case files
- Quarterlyrefresh
Written byKris GjorgjioskiKeyword research and industry benchmarks, Webtec Research
Checked byHristijan NajcheskiHead of SEO and AEO (technical and AI SEO), data verification
Updated October 15, 2026
Built from research on
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THE TWELVE CHECKS
What we measure on every site.
Each check is pass or fail, or a measured value, so results can be aggregated by industry.
- 01
AI crawler access
Does robots.txt allow the main AI crawlers to read the site?
- 02
Server-rendered content
Is the main text in the HTML the server sends, before any script runs?
- 03
llms.txt
Does the site publish an llms.txt guide for AI assistants?
- 04
Structured data
Which schema types are present, and do they validate?
- 05
FAQ and answer blocks
Are there clear question-and-answer sections an assistant can quote?
- 06
Unique titles and descriptions
Does each page have its own title and description?
- 07
Heading structure
One clear H1 and a logical outline per page?
- 08
Page speed
How fast does the main page load and become usable on a phone?
- 09
Accessibility basics
Text alternatives, contrast and labels present?
- 10
Form and contact path
Can a visitor reach the business in two steps, and does the form work?
- 11
Review and trust signals
Are real reviews and credentials visible and marked up?
- 12
Entity consistency
Do name, address and services match across site and profiles?
HOW IT WORKS
From a list of sites to a chart you can cite.
- 1
Choose the sample
Public business websites by industry, selected by a rule we publish, not by who looks good.
- 2
Run the checks
The same twelve automated checks on every site, on a recorded date.
- 3
Aggregate
Results are grouped by industry. Individual sites are never named.
- 4
Verify and publish
Hristijan N. checks the pipeline and the totals, then the chart goes live with its method and date.
WHILE WE COLLECT
Audit your own site now.
Run the AI-built-site check, or ask us for a free audit and a strategist reviews your site by hand.
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A LIVING REFERENCE
Refreshed every quarter.
We re-check every source in January, April, July and October, add new studies and retire old ones. This is Edition 1 (October 15, 2026); the next is due January 2027. Changes are logged on the methodology page.
