Can someone indicate me where I can find the code that the lang attribute for the html tag determines? I'd like to make the lang attribute to show <html lang="en-US"> instead of <html lang="en">

3 Answers 3


The Source code you are looking for is located in vendor/magento/module-theme/view/base/templates/root.phtml.

To change this behavior copy the above file to your current theme directory.

For Example:- app/design/frontend/YOURVENDORNAME/YOURTHEME/Magento_Theme/templates/root.phtml

Around line 11 Change the below line

<html <?= /* @escapeNotVerified */ $htmlAttributes ?>>


<html <?= /* @escapeNotVerified */ "lang=en-US"; ?>>      
  • Thanks for reacting. Given the fact that i have different store views, i’d like to have it by means of php variables instead of a harcoded value Nov 18, 2018 at 10:11
  • Yes it is possible to have it in php variable, you can add a condition to check the current store view by either store id or storename. Base on the store you can set the value in a php variable.
    – mydons
    Nov 19, 2018 at 6:48

I guess there is no need to overwrite the root template file.

  1. Just listen to "layout_generate_blocks_after" event

<event name="layout_generate_blocks_after">
    <observer name="sgecom_seo_html_lang" instance="SgEcom\Seo\Observer\Frontend\HtmlLang" />

  1. In your observer :
use Magento\Framework\Event\Observer;
use Magento\Framework\Event\ObserverInterface;
use Magento\Framework\View\Page\Config as PageConfig;

class HtmlLang implements ObserverInterface
    protected $pageConfig;

    public function __construct
        PageConfig $pageConfig
        $this->pageConfig = $pageConfig;

     * @inheritDoc
    public function execute(Observer $observer)
            'TEST' //Put here the value you want
  • Not sure why this is downvoted. This is the correct way to modify the HTML Language Code. The 2 other answers are not best practice.
    – puntable
    Nov 16, 2021 at 16:38

You can either check with store name or store id and assign the lang attribute

$objectManager =  \Magento\Framework\App\ObjectManager::getInstance();        
$storeManager = $objectManager->get('\Magento\Store\Model\StoreManagerInterface');
$storeID       = $storeManager->getStore()->getStoreId(); 
$storeName     = $storeManager->getStore()->getName();

$lang = "lang=en-US"; //Default value for lang attribute
 $lang = "lang=en-US";
else if($storeID==2) {
 $lang = "lang=en-GB";

<html <?= /* @escapeNotVerified */ $lang ?>>

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