Нашёл 3 млн ответов for 'idm extension chrome'.
https://www.internetdownloadmanager.com/register/new_faq/chrome_extension.html
https://www.internetdownloadmanager.com/register/new_faq/bi9.html
https://www.internetdownloadmanager.com/register/new_faq/bi_main.cgi?br=Chrome
https://chrome.google.com/webstore/detail/open-with-internet-downlo/epgilldoipfbdlneomlmegekaoonchcj?hl=en
https://www.techworm.net/2020/02/idm-integration-module-extension-chrome.html
https://techdows.com/2013/05/how-to-install-idm-integration-extension-in-google-chrome-manually.html
https://www.filehorse.com/download-idm-integration-for-chrome/
https://www.askvg.com/how-to-install-idm-integration-module-extension-in-google-chrome/
https://propakistani.pk/how-to/how-to-add-idm-extension-in-chrome/
https://brighterguide.com/idm-extension-for-chrome/