6 min read
Structured data across templates, not page by page
Schema that survives a redesign is built once, in typed builders, and emitted by the layout and each template rather than each page. How B1 and B2 read it.
Checks B1, B2
Blog category
Understanding
Pillar B: structured data, semantic HTML, metadata, text ratio and canonical hygiene.
- 6 min read
Duplicate content through an agent's eyes
Tracking parameters, trailing slashes, case, pagination and print views turn one page into several. What rel=canonical does for a machine that fetches once.
Checks B7
- 7 min read
Canonical hygiene, one host for www, non-www, http and https
Every site has four URLs for one homepage. How check B7 probes the www and http variants, which statuses pass, and how rel=canonical is scored across pages.
Checks B7
- 6 min read
Alt text as a data problem, not a compliance problem
How check B6 counts content images, why icons under 50px are excluded, what an empty alt costs, and how to audit coverage from templates, not page by page.
Checks B6
- 6 min read
Clean text ratio, or how much of your page is actually page
What the 0.10 and 0.05 thresholds in check B5 mean, why script and style contents are excluded since rubric v1.0.1, what inflates markup, and how to measure it.
Checks B5
- 6 min read
Open Graph for agents, not just for Slack previews
The three Open Graph tags are the cheapest summary a machine reads. How checks B4 and D5 score them, and how we generate a per-page image on the server.
Checks B4, D5
- 6 min read
Title and description lengths, and why the ranges exist
Why check B4 wants a unique title of 15 to 70 characters and a description of 50 to 160 on every page, and how a site name template eats a third of the budget.
Checks B4
- 7 min read
Landmarks, main, nav and footer, and why div soup is an agent bug too
How check B3 looks for main, nav and footer on every crawled page, how C3 treats clickable divs and positive tabindex, and why the WCAG fix is the agent fix.
Checks B3, C3
- 7 min read
One h1 per page, and the other heading rules agents care about
Why check B3 wants exactly one h1 and no skipped heading level on every crawled page, what a skip does to extraction, and the component patterns that cause it.
Checks B3
- 7 min read
Product and Offer schema that matches the page
What a correct Product and Offer block looks like, how checks B2 and C5 test for it, and why a price that disagrees with the page is worse than no schema.
Checks B2, C5
- 7 min read
Which schema types your site type actually needs
Organization or WebSite first, then Product and Offer, Article, FAQPage or SoftwareApplication by site type. How check B2 decides what kind of site you are.
Checks B2
- 6 min read
JSON-LD that parses, the five mistakes that score zero
Trailing commas, escaped quotes, an empty graph, the wrong script type and client-side injection leave check B1 nothing to read. How the scanner counts pages.
Checks B1