Google Chrome: Remove all 'Other Search Engines' [duplicate]

Question

This question already has an answer here:

• Google Chrome automatically adding websites to my list of search engines? 11 answers

Google Chrome saves lots of Other Search Engines from websites I visit, under Settings > Search; Manage search engines. I believe this is called ‘OpenSearch’.

Clicking the remove icon ❌ on each one would be very cumbersome.

Is there a way to delete all of them, without having to do it manually?

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^{NB: This extension supposedly prevents Chrome from adding custom search engines.}

Answer 1

Go to chrome://settings/searchEngines, hit F12 and paste this into the Console tab:

settings.SearchEnginesBrowserProxyImpl.prototype.getSearchEnginesList()
    .then(function(val) {
        val.others.sort(function(a, b) { return b.modelIndex - a.modelIndex; });
        val.others.forEach(function(engine) {
            settings.SearchEnginesBrowserProxyImpl.prototype.removeSearchEngine(engine.modelIndex);
        });
    });

Thanks to alcohol for updating this code for material design.