This extension allows you to fill all form inputs (textboxes, textareas, radio buttons, dropdowns, etc.) with dummy data. It is a must for developers who work with forms as it avoids the need for manually entering values in fields.
https://chrome.google.com/webstore/detail/bnjjngeaknajbdcgpfkgnonkmififhfo
https://addons.mozilla.org/en-US/firefox/addon/form-filler-devtool/
Use CTRL+SHIFT+F on Windows and CMD+SHIFT+F on Mac to fire the extension. This can be changed from the Chrome Extensions -> Keyboard Shortcuts.