Is the HTML fetched live?

Yes, each check fetches the page fresh from our server and does not store it.

Why is the final URL different from what I entered?

The tool follows redirects, and canonical comparisons use the final URL.

No. It shows what is in the raw HTML response.

Analyzer

Pull the canonical URL, robots directives, title, description, hreflang, Open Graph and JSON-LD out of any page's HTML.

Try:

The page is fetched by our server (it can't be done from your browser), analysed, and not stored.

Clean canonical and meta tags help search engines understand a page. IndexBoost makes sure they see it quickly.

Context

01
Canonical should match the final URL
A self-referencing canonical is the safe default. A canonical pointing at a different URL tells Google to prefer that one.
02
One canonical per page
Multiple conflicting canonical tags are ignored. CMS plugins and themes often add duplicates.
03
Check the rendered source too
This tool reads the HTML the server returns. If a script injects tags later, crawlers may see them only after rendering.