Chrome extension

Creating a Chrome browser extension can be extremely simple.

https://developer.chrome.com/extensions/getstarted provides a good starting point tutorial. But I'll try provide a simpler tutorial, on how to create a extensions that turns the background of pages red and rotates all the elements.

We'll start by creating an extension folder

And adding to it the following files:

• manifest.json a metadata file in JSON format containing properties of your extension: name, description, version number
• icon.png the icon of the extension
• popup.html content shown when user clicks the extension icon
• jquery-3.1.1.min.js a jquery library downloaded
• content.js JavasScript file where we'll add the action we'll like the extension to perform

manifest.json

{
"manifest_version": 2,

"name": "Communist extension",
"description": "This extension turns you page red",
"version": "1.0",

"browser_action": {
    "default_icon": "icon.png",
    "default_popup": "popup.html"
},
    "permissions": [ ],
    "content_scripts": [
	{
            "matches": ["<all_urls>"  ],
            "js": ["jquery-3.1.1.min.js", "content.js"]
	}

    ]

}