Sort sheet tabs name alphabetically

This is a script I located to sort my sheet tab names alphabetically. Is it safe for me to use in my free version of Google Sheets?

function sortSheets () {  var ss = SpreadsheetApp.getActiveSpreadsheet();  var sheetNameArray = [];  var sheets = ss.getSheets();  for (var i = 0; i < sheets.length; i++) {    sheetNameArray.push(sheets[i].getName());  }  sheetNameArray.sort();  for( var j = 0; j < sheets.length; j++ ) {    ss.setActiveSheet(ss.getSheetByName(sheetNameArray[j]));    ss.moveActiveSheet(j + 1);  }}