https://openuserjs.org/scripts/rybak/Subreddit_tab_icons
About | Subreddit tab icons | Userscripts | OpenUserJS
Replaces tab icons (favicons) on reddit with icons of subreddits.
tab iconssubreddituserscripts
https://www.makeuseof.com/tab-workspaces-and-custom-icons-in-vivaldi/
How to Use Tab Workspaces and Custom Icons in Vivaldi 6.0
Workspaces and Custom Icons make Vivaldi a more efficient and personal desktop browser.
custom iconsusetabworkspaces
https://xencustomize.com/product/navigation-tab-icons.64/
XenCustomize Navigation Tab Icons - Add-on for XenForo 2 | XenCustomize
Add Font Awesome icons to your XenForo navigation tabs with ease and style.
tab iconsxencustomizeadd