If the page has Canonical URL, you can click to switch the URL in address bar.
The extension icon becomes active when the page has Canonical URL, and click it to change URL in the address bar to Canonical URL without reloading the page. Click again to return to the original URL. It works in the same way when the URL contains extra parameters. Please use it, for example, when you share a page.
- (2019-02-18) Giovana Soares: Works perfectly if it has a canonical tag. I am having problems with my website because it's posting duplicate canonical tags, so I was trying to see which one it gives priority to, but since it only shows the page as the source and not an actual report, I can't exactly pinpoint what canonical it reads. But nonetheless it's a great tool for SEO.