I have many bookmarks in the bookmarks toolbar in Chrome, most of them without any text (i.e. only showing the favicon). However, I find that there is too much blank space between the bookmarks/icons - it seems to be more than half of the width of the favicons themselves. I don't like the empty space visually, and also would like to fit more into the (visible) toolbar area.
Is there a way to adjust this?
No, there's no way to do this. Chrome is very strict about UI. You have very few options to customize UI. Anyway, you can report an issue to Google anytime
from reading on another place:
go to the properties of your chrome shortcut and at the end of the target line add a space then: --disable-new-menu-style
example: "C:\Program Files\Google\Chrome\Application\chrome.exe" --disable-new-menu-style
