Add custom search engine – Get this Extension for 🦊 Firefox ...
addons.mozilla.org › add-custom-search-engineJul 20, 2021 · About this extension. Notice for Firefox 78+: Because of changes made by Mozilla the add-on is now less convenient. I am sorry for the inconvenience. Add a custom search engine to the list of available search engines in the search bar and URL bar. Your custom search engine needs a name and search URL. Additionally fields include an icon, a suggestion URL, POST query parameters, the input encoding and a description.