bz-vermillion.com is the official website for B'z. The site features both the standard Japanese version of the site and an English version that is updated whenever the band have upcoming international releases or tours. Both feature a full discography for all of their releases to date along with profile information.

The official website is where most new B'z information is first announced to the public. Some more exclusive information, such as announcements of tours and the release dates of upcoming home videos, may first appear on the B'z PARTY fanclub website. Other news may first be seen in newspapers throughout Japan and later be found on the official site.

Typically, the website has featured a Flash-based video teaser announcing new singles, albums, tours, and other events. The site itself transitioned in 2013 from a Flash-based design to a more browser-friendly HTML variant.