How to hide the .url extension in all folders

You could use a custom column that removes the .url extension.

function OnInit(initData) {
    initData.name = 'Name2';
    initData.version = '2023-03-25';
    initData.copyright = '';
    initData.url = 'https://resource.dopus.com/t/how-to-hide-the-url-extension-in-all-folders/44021';
    initData.desc = '';
    initData.default_enable = true;
    initData.min_version = '12.0';
}

function OnAddColumns(addColData) {
    var col = addColData.AddColumn();
    col.name = 'Name2';
    col.method = 'OnColumn';
}

function OnColumn(scriptColData) {
    var item = scriptColData.item;
    scriptColData.value = item.ext.toLowerCase() == '.url' ? item.name_stem : item.name;
}

Save ColumnName2.js.txt to

%appdata%\GPSoftware\Directory Opus\Script AddIns

and toggle the column with

Set COLUMNSTOGGLE="scp:Name2/Name2(!,a,0)"

How to use buttons and scripts from this forum