QuickSearch - Little Arc-Style Overlay by AlexOChunk

A native Firefox WebExtension port of the original userChrome script by Darsh-A, spruced up with native browser compatibility, container context preservation, and zero-config installation.
https://github.com/Darsh-A/Quick-Search-Zen-Browser/tree/main

QuickSearch brings an Arc-style global quick search overlay to Firefox and Zen Browser.

Features:
- Hotkey Trigger: Launch a clean search overlay from inside the browser (unfortunately no global hotkey) instantly using keyboard shortcuts.
- Container Support: Automatically preserves your active Firefox container tab context.
- Native & Lightweight: Fast and easy to set up—no userChrome.css or autoconfig required.

https://github.com/alejandrovegab/QuickSearch-Extension