Faviconographer

Doesn't work. MacOS 10.13.2/2016 MacBook Pro with Touch Bar. I saw this on the developer's website, "Under High Sierra, one user had to delete their Safari preferences file to make Faviconographer work," but I'm afraid that it will reset my Safari settings (I'm tired to set all the things again).

Exactly what I needed! Long-time user of (first) Glims and (later) SafariStand, and for the most part I used the latter to add favicons to the tabs. SafariStand injection is no more, short of patching /Applications/Safari.app itself, so until Apple adds favicons (which might never happen, because it can look really ugly, depending on the favicon), this is the best thing you can have. Sure, it's just an overlay, so there's a slight lag, when adding a new tab, rearranging tabs etc., but it's not possible to do it any differently. (I believe a very similar method is used by Default Folder X now.) As for the the functionality itself, one idea for enhancement: if favicons (like the MU of MacUpdate) have transparency, the "x" of the tab-close button will shine through, when the user moves the pointer over the tab (highlight tab), so Faviconographer should maybe put an image layer beneath the favicon layer that has the same grey tone/tint/hue as the tab beneath it. (Or do something else completely, like fading out the favicon completely, if the user hovers over the tab with the mouse pointer.)

Also increases energy consumption: runs down my MacBook's battery faster.

Nice, but it would be better if its config window would stay hidden when the app is told to Hide. It would be even better if it were faceless and didn't have a Dock icon (maybe a System Preference pane rather than an app?)

it works on high sierra. always wanted this functionality since safari stand got broken