CSS firefox-quantum Projects
Hide contextmenu items in Firefox PhotonProject mention: How do i reposition where the "reload tab" shows up after right click of tab | reddit.com/r/FirefoxCSS | 2021-06-20
A theme that aims to look nice and clean while not compromising functionality.Project mention: What's the best way to use vertical tabs in Firefox ? | reddit.com/r/firefox | 2021-06-05
Or you can try themes from: https://firefoxcss-store.github.io/ some of them integrate well with Tree Style Tab, but you can use Sidebery if you like that one. My personal preference is My Firefox Theme — screenshots
Scout APM: A developer's best friend. Try free for 14-days. Scout APM uses tracing logic that ties bottlenecks to source code so you know the exact line of code causing performance issues and can get back to building a great product faster.