Seasonal Marketing Calendar is a extension for Chrome where it will help you plan your Marketing actions and anticipate your competition. You will also find suggestions on which channel you should use in each case: Send Email Marketing Campaigns or generate actions in Social Networks.
Extensions are small software programs that customize the browsing experience. They enable users to tailor Chrome functionality and behavior to individual needs or preferences. They are built on web technologies such as HTML, JavaScript, and CSS.
An extension must fulfill a single purpose that is narrowly defined and easy to understand. A single extension can include multiple components and a range of functionality, as long as everything contributes towards a common purpose.
Every extension has a JSON-formatted manifest file, named manifest.json, that provides important information Example. Then we have the files popup.html which is the popup that we see when we click on the icon of the extension and then we have a configuration.html where we will have more options of the extension. These two files get the styles, images and scripts from the resource folder.