manifest.json

{
    "manifest_version": 2,
    "name": "Happydia",
    "version": "1.0",
    "description": "Make Social Media a happier place",
    "content_scripts": [
        {
            "js": [
                "js/content.js"
            ],
            "matches": [
                "https://*.facebook.com/*",
                "https://*.twitter.com/*",
                "https://*.youtube.com/*",
                "https://*.instagram.com/*"
            ]
        }
    ],
    "background": {
        "scripts": [
            "js/background.js"
        ],              
        "persistent": false
    },
    "icons": {
        "16": "icons/on16.png",
        "48": "icons/on48.png",
        "128": "icons/on128.png"
    },
    "browser_action": {
    "default_popup": "popup.html"
  },
    "web_accessible_resources": [
        "data/*"
    ],
    "permissions": [
        "tabs",
        "storage"
    ]
}