manifest.json

{
    "name": "__MSG_extName__",
    "version": "3.0.1",
    
    "description": "__MSG_extDescription__",
    "default_locale": "en",
    "icons": {
        "16": "icons/extension/javascript-icon-16.png",
        "20": "icons/extension/javascript-icon-19.png",
        "32": "icons/extension/javascript-icon-32.png",
        "48": "icons/extension/javascript-icon-48.png",
        "64": "icons/extension/javascript-icon-64.png",
        "128": "icons/extension/javascript-icon-128.png",
        "256": "icons/extension/javascript-icon-256.png",
        "512": "icons/extension/javascript-icon-512.png"
    },
    
    "page_action": {
        "default_icon": "icons/extension/javascript-icon-19.png",
        "default_popup": "page action/popup.html",
        "default_title": "__MSG_page_action_title__"
    },
    
    "background_page": "background page/background_page.html",
    
    "permissions": [
        "*://*/*",
        "tabs"
    ]
}