There are nearly 200 countries worldwide, and finding yours in the dropdown list can be a pain, even when they're in alphabetical order. To avoid frustration, provide search functionality to filter the options as users type — it's called auto-suggest. In contrast to dropdown menus that require users to scroll endlessly, the functionality finds matches and immediately presents them as users type in an input.

Country lists aren't the only inputs that benefit from auto-suggest search. Consider using this functionality any time users need to select from a long list of options.