What is the advantage of adding Favicon in blogger blog

Favicon is used for branding. That's why Favicon is mostly made by matching Site Logo and Theme Color. This helps in creating a visual identity in the mind of the readers.

Favicon is used to distinguish and stand out from other websites.

Readers are easy to identify the site of their choice. Due to which the readers also benefit.

Browsers use Favicon for Favorite Site, History, Bookmark etc. So definitely add Favicon to your blog.