Add Custom Search Engines to Firefox - Firefox Help

Customizing Firefox Search with Add to Search Bar
Have you ever wished you could easily integrate search functionality from any website directly into the Firefox Search Bar? Traditionally, this required either creating a search plugin yourself or hoping the website owner would develop one.
Fortunately, the Add to Search Bar extension for Firefox provides a solution. It introduces a new option to the context menu, enabling you to generate custom search plugins quickly and conveniently.
How it Works
The process is straightforward. Simply right-click within the search box of the website you want to add.
From the context menu, select "Add to Search Bar..." This will open a prompt asking you to assign a name to the new search plugin. You can use a shortened version of the site's title, for example.
Once you've named the plugin, it's ready to use. You can now initiate searches on that specific website directly from the Firefox Search Bar.
Testing and Availability
This extension has been tested across various websites and demonstrates reliable performance.
The Add to Search Bar extension is available for download from Mozilla Add-ons. It offers a simple and effective way to enhance your Firefox search experience.
With this tool, you no longer need to rely on website owners to create search plugins. You can tailor your Firefox search bar to your specific needs.