manifest.json

{
  "name": "VK Freeloader",
  "description": "Загрузка музыки в ВКонтакте",
  "version": "3.0",
  "icons": {
    "16": "favicons/16x16.png",
    "32": "favicons/32x32.png",
    "48": "favicons/48x48.png",
    "144": "favicons/144x144.png"
  },

  "permissions": [
    "tabs", "http://*/*", "https://*/*", "contextMenus", "storage", "downloads"
  ],

  "browser_action": {
      "default_title": "VK Freeloader",
      "default_popup": "popup.html"
  },

  "background": {
    "scripts": ["background.js"]
  },

  "content_scripts": [
    {
      "matches": ["https://vk.com/*", "https://m.vk.com/*"],
      "css": ["styles/elements.css"],
      "js": ["scripts/vk.dowloadbutton.js", "scripts/runtime.audiodownload.js"],
      "run_at": "document_end"
    }
  ],

  "web_accessible_resources": [
    "styles/elements.css",
    "scripts/vk.dowloadbutton.js"
  ],

  "manifest_version": 2
}