I'm using magento 2 , and I'm trying to install an extension from composer.json file , now I've installed composer through SSH , but I'm new to composer installations , how do I proceed now with the installation ?

  • Is it the extension on a public or private composer repository?
    – Barbanet
    Commented May 30, 2016 at 0:39
  • I think is public , not sure about that , as I told you I'm new to composer , by the way this is the extension marketplace.magento.com/addshoppers-social-login.html
    – alexcr
    Commented May 30, 2016 at 1:25
  • what is the file location when you install it through composer
    – Harris
    Commented Mar 22, 2022 at 21:25

3 Answers 3


Follow below steps to install magento2 extension (2.1.7)

cd <your Magento install dir>
composer require <component-name>:<version> --no-update
composer update
bin/magento setup:upgrade
bin/magento setup:di:compile

Source: http://devdocs.magento.com/guides/v2.1/cloud/howtos/install-components.html


For Composer installation see here official Site of composer. After installation it, You can install Magento 2 extensions with Composer: add an extension's package to the root composer.json and then do composer update and bin/magento setup:upgrade. Now clear the cache bin/magento cache:clean.


  • but in my root folder there is already a composer.json , is not that gonna affect in any way ?
    – alexcr
    Commented May 30, 2016 at 8:18
  • 2
    You can make a backup copy of composer.json first. Use the command composer require <module name>, where <module name> is located in <sample module root dir>/etc/module.xml as the value of module name=. That updates composer.json so all you have to do is run composer update to install it. Commented May 30, 2016 at 14:26

This is the sample how to install the Adm Developer Toolbar using the composer.

composer require vpietri/adm-quickdevbar &&
php bin/magento --clear-static-content module:enable ADM_QuickDevBar && 
php bin/magento setup:upgrade

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