Javascript injection returns quite a few hits. For example for Chrome: https://chrome.google.com/webstore/detail/css-and-javascript-inject/ckddknfdmcemedlmmebil

Javascript injection returns quite a few hits. For example for Chrome: https://chrome.google.com/webstore/detail/css-and-javascript-inject/ckddknfdmcemedlmmebildepcmneakaa?hl=en https://chrome.google.com/webstore/detail/css-and-javascript...