Google sheets: fast creation of URL from cell by template

URL.gs

// Just change 22nd string to your template :-D
// This script adds "URL" menu to google sheet with one intem "create URL".
// You need select cell range and click on the menu item in order to make links from your cells.
// It can create links by template 123 => https://example.com/browse/123/.

var ss = SpreadsheetApp.getActiveSpreadsheet();

function onOpen() {
  var menu = [{name: "create URL", functionName: "createURL"}];
  ss.addMenu("URL", menu);
}

function createURL() {
  var aRange = ss.getActiveRange()
  var numRows = aRange.getNumRows();
  var numCols = aRange.getNumColumns();
  for (var i = 1; i <= numRows; i++) {
    for (var j = 1; j <= numCols; j++) {
      var currentValue = aRange.getCell(i,j).getValue();
      
      //String with template
      aRange.getCell(i,j).setValue('=HYPERLINK("https://example.com/browse/'+currentValue+'","'+currentValue+'")');
    }
  }
}