Automatically set the target language to English based on detected source language changes and auto-trigger translation if page language differs from browser language.
// ==UserScript==
// @name Google Translate Auto Language Enhanced
// @namespace https://greasyfork.org/en/users/1030895-universedev
// @version 2.5
// @author UniverseDev
// @license GPL-3.0-or-later
// @description Automatically set the target language to English based on detected source language changes and auto-trigger translation if page language differs from browser language.
// @match *://translate.google.*/*
// @noframes
// ==/UserScript==
"use strict";
const targetLang = "en";
const browserLang = navigator.language.split('-')[0];
function setTargetLanguage() {
const selector = `[data-language-code="${targetLang}"]`;
const targetTab = document.querySelector(selector);
if (targetTab && targetTab.getAttribute("aria-selected") !== "true") {
targetTab.click();
}
}
function observeSourceLanguage() {
const sourceLangTab = document.querySelector("[role=tablist] [aria-selected='true']");
if (sourceLangTab) {
const observer = new MutationObserver(() => {
setTargetLanguage();
});
observer.observe(sourceLangTab, { characterData: true, subtree: true });
}
}
function detectPageLanguage() {
const pageLang = document.documentElement.lang || document.querySelector("html").getAttribute("lang");
if (pageLang && pageLang !== browserLang) {
console.log(`Detected page language (${pageLang}) differs from browser language (${browserLang}). Triggering translation.`);
setTargetLanguage();
}
}
function init() {
setTargetLanguage();
observeSourceLanguage();
detectPageLanguage();
}
window.addEventListener("load", init);