i am using Magento 2 , In my case i want to change programmatically the instance's logo and favicon , but i can't find the right file to change them ,

can anyone help me do that please

3 Answers 3


For set Logo



<?xml version="1.0"?>

<page xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:View/Layout/etc/page_configuration.xsd">
    <referenceBlock name="logo">
        <action method="setLogoFile">
            <argument name="logo_file" xsi:type="string">VendoreName_ModuleName::images/logo.png</argument>

Put your logo image to this path app\code\VendoreName\ModuleName\view\frontend\web\images here my image file name is logo.png.

For set fevicon icon

  1. Add your icons in the <your_theme_dir>/Magento_Theme/web/ directory.
  1. In the <your_theme_dir>/Magento_Theme/layout/default_head_blocks.xml layout file specify the paths to the icons and their sizes. For example, if you added a favicon-32x32.png icon and want it to be used as a 32px x 32px favicon, your default_head_blocks.xml would be like following:
<?xml version="1.0"?>

<page xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:View/Layout/etc/page_configuration.xsd">
        <link src="Magento_Theme::images/logo.png" rel="icon" sizes="32x32" />
  1. Put your fevicon image into <your_theme_dir>/Magento_Theme/web/images/logo.png

*Note:- For your changes to be applied, clear the browser cache, and the following directories on the server (do not delete the .htaccess file!): - pub/static - all directories under var

I Hope This Helps You.*


Just inject the class \Magento\Config\Model\ResourceModel\Config $_resourceConfig and set value for web/default/cms_home_page to desired page ‘youridentifier’.

public function __construct(\Magento\Config\Model\ResourceModel\Config $_resourceConfig)
        $this->_resourceConfig = $_resourceConfig;

        $this->_resourceConfig->saveConfig('web/default/cms_home_page', 'youridentifier', 'default', 0);
  • Thank you for your response , this work for me but just in my PC , i want to do this for all instances so i need to do it by code ?
    – coding mv
    Sep 21, 2020 at 12:24
  • No it will for all , if website is in live environment. Sep 21, 2020 at 12:26
  • Clear Cache in magento Sep 21, 2020 at 12:26
  • no it"s in my local now , so if i want to share the config it won't work there in prod
    – coding mv
    Sep 21, 2020 at 12:29
  • Just follow the same steps in production also, it will work there. Sep 21, 2020 at 12:29

You can create a DataPatch to update the path to both the logo and the favicon:

<?php declare(strict_types=1);

namespace VENDOR\DataPatches\Setup\Patch\Data;

use Magento\Config\Model\ResourceModel\Config;
use Magento\Framework\Setup\Patch\DataPatchInterface;
use Magento\Store\Model\ScopeInterface;

class UpdateFavicon implements DataPatchInterface
     * @var Config
    protected $config;

    public function __construct(
        Config $config
    ) {
        $this->config = $config;

    public function apply()
        $config = $this->config;
        $path = 'PATHTOFILE';

    public static function getDependencies()
        return [];

    public function getAliases()
        return [];

Above is an example for changing the favicon. You can also do this for Logo by using design/header/logo_src.

However, in this example it is assumed there's already a logo / favicon in your server.

  • Thank you sir for your reply , after doing this , and setting up the path of the custom favicon there are no changes on the favicon , still get Magento's favicon!! , where is the problem here ?
    – coding mv
    Sep 21, 2020 at 15:38
  • Please check if the patch has run (patch_list table) and if the data has been updated in database (core_config_data table. Did the patch run and has the data been updated? Sep 21, 2020 at 15:53
  • there is no patch_list table in my database , i have change the module version in module.xml and i have run setup:upgrade , no result !!
    – coding mv
    Sep 21, 2020 at 16:23
  • Which version of Magento are you using? Datapatches (and the patch_list table) are available as of magento 2.3. However, If you are using an older version you can either update or apply the same logic in an UpdgradeData. Sep 22, 2020 at 7:30
  • yes my version is older than 2.3 , can you update for me your question to show me how it works with upgradedata
    – coding mv
    Sep 22, 2020 at 9:07

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