The Emoji Keyboard is a really simple extension for Chrome. It is free and the icons are organized in a very simple and user-friendly way. In case you are searching for the perfect emoji for a certain activity or situation, this will be a great help.

You can simply search through categories or pick up the emojis in a certain category and you'll be ready to use them. You can enable or disable the auto-copy option and you can also choose the size of the emojis within the panel for quick and easy access.