Images used for the Compact logo on the upper left of the nav bar appear blurred even when matched exactly to the CSS display size. It appears to be a Boost issue as the same thing happens with the latest Classic & Fordson themes. However, if I use the latest Moove theme, the logo image quality is much clearer. If I use the image in a the content area of a Page, Lesson, Book, etc, it looks clear and sharp.

This issue has been around since version 3.7 https://moodle.org/mod/forum/discuss.php?d=388951