Magento 2: Get Logo URL, ALT Text, Logo Height & Width

This article shows how we can get the URL and ALT text of a Logo of the Magento 2 website. The article also include code to fetch Logo Height and Width.

Logo Image Width and Logo Image Height is fetched from Configuration Settings (Stores -> Settings -> Configuartion -> General -> Design -> Header).

Below is a block class of my custom module (Chapagain_HelloWorld). I have injected object of Logo block in the constructor of my module’s block class.

app/code/Chapagain/HelloWorld/Block/HelloWorld.php

<?php
namespace Chapagain\HelloWorld\Block;
class HelloWorld extends \Magento\Framework\View\Element\Template
{
    protected $_logo;   
    
    public function __construct(
        \Magento\Backend\Block\Template\Context $context,
        \Magento\Theme\Block\Html\Header\Logo $logo,
        array $data = []
    )
    {       
        $this->_logo = $logo;
        parent::__construct($context, $data);
    }
    
    /**
     * Get logo image URL
     *
     * @return string
     */
    public function getLogoSrc()
    {   
        return $this->_logo->getLogoSrc();
    }
    
    /**
     * Get logo text
     *
     * @return string
     */
    public function getLogoAlt()
    {   
        return $this->_logo->getLogoAlt();
    }
    
    /**
     * Get logo width
     *
     * @return int
     */
    public function getLogoWidth()
    {   
        return $this->_logo->getLogoWidth();
    }
    
    /**
     * Get logo height
     *
     * @return int
     */
    public function getLogoHeight()
    {   
        return $this->_logo->getLogoHeight();
    }   
}
?>

See more functions in vendor/magento/module-theme/Block/Html/Header/Logo.php.

Now, we use can the function in our template (.phtml) file.

echo $block->getLogoSrc() . '<br />';
echo $block->getLogoAlt() . '<br />';
echo $block->getLogoWidth() . '<br />';
echo $block->getLogoHeight() . '<br />';

Using Object Manager

$objectManager =  \Magento\Framework\App\ObjectManager::getInstance();      

$appState = $objectManager->get('\Magento\Framework\App\State');
$appState->setAreaCode('frontend');

$logo = $objectManager->get('\Magento\Theme\Block\Html\Header\Logo');
echo $logo->getLogoSrc() . '<br />';
echo $logo->getLogoAlt() . '<br />';
echo $logo->getLogoWidth() . '<br />';
echo $logo->getLogoHeight() . '<br />';

Hope this helps. Thanks.