google chrome extensions
An chrome extension is a installable enhancements to the Google Chrome browser.
Those add-ons allow the user to add some features orhandle new types of content.
Google Chrome Extensions
Extensions can be used to modify the behavior of your Chrome browser, or even add entirely new features.
Extensions are especially popular with opensource programs like Chrome and Firefox, because the developers intend for the browser to be a fairly minimalistic application in order to reduce software bloat and bugs,
while retaining a high degree of extensibility, so that individual users can add the features that they prefer.