QuickSearch Pro by DABET

Quick search from the address bar using the "qs" keyword
Custom search engine prefixes (e.g., "g" for Google, "dd" for DuckDuckGo)
Ability to add, remove, and modify search engines
Set a default search engine for queries without a prefix
Suggestions based on available search engines
To complete the extension, you'll need to create appropriate icon files (icon-48.png and icon-96.png) and place them in the icons folder.