Data and Methodology
Where does World Languages Catalog get speaker counts?
WLC uses Ethnologue-aligned ranking context and public linguistic references. Language pages state that counts are estimates and may vary by methodology and publication date.
Do you separate L1 and L2 users?
Yes. WLC profile pages prioritize native-speaker (L1) estimates and avoid combining L1/L2 totals unless explicitly labeled.
What does ISO 639-3 mean on language pages?
ISO 639-3 is a globally used three-letter language identifier standard that helps ensure consistency across datasets and research tools.
Indexing and SEO
Are your language pages crawlable by search engines?
Yes. Each language page is static HTML with unique title/meta/H1, canonical, structured heading hierarchy, schema markup, and sitemap inclusion.
Why can pages be marked “Crawled - currently not indexed”?
This often happens when pages appear thin, repetitive, or insufficiently unique. WLC addresses this by adding deep page-specific sections, FAQs, references, and internal linking.
Corrections and Support
How do I report an error on a language page?
Use Contact and include the page URL, ISO code, exact correction request, and verifiable references.
Can researchers request citation details?
Yes. WLC can provide source clarification notes for published profile pages upon request.