Start with the evidence
Google's duplicate URL guidance explains how canonicalization helps search systems understand the preferred URL, which matters when .html and extensionless paths both receive impressions.
Align canonical tags, sitemap entries, internal links, and redirects for pages such as about, about-en, and AI agent workflow.
Traffic is not the whole answer
The signal matters when it clarifies search intent, proof, and conversion action, not when it adds another traffic tactic.
Check the page promise
- Audit visible pages for one canonical URL, one sitemap entry, and internal links that avoid legacy .html paths
- Keep the test narrow: one priority page with clear topic, source links, internal links, and a conversion action
What still needs proof
Fragmented URLs split search evidence and lead readers into older page variants. Keep the original source open so the announcement, the evidence, and this site's interpretation stay separate.