YouTube to MP3

manifest.json

{
  "version": "2.0.18",
  "manifest_version": 2,
  "name": "YouTube to MP3",
  "short_name": "youtube-to-mp3",
  "background": {
    "page": "lib/chrome/background.html"
  },
  "web_accessible_resources": [
    "data/content_script/icons/mp3.png"
  ],
  "description": "Download an mp3 audio file from any YouTube video with just one click!",
  "options_ui": {
    "open_in_tab": true,
    "page": "data/options/options.html"
  },
  "permissions": [
    "storage",
    "downloads",
    "*://*.youtube.com/*",
    "*://*.googlevideo.com/*"
  ],
  "content_scripts": [
    {
      "all_frames": false,
      "matches": [
        "*://*/*"
      ],
      "js": [
        "data/content_script/inject.js"
      ],
      "css": [
        "data/content_script/inject.css"
      ]
    }
  ],
  "icons": {
    "16": "data/icons/16.png",
    "19": "data/icons/19.png",
    "32": "data/icons/32.png",
    "38": "data/icons/38.png",
    "48": "data/icons/48.png",
    "64": "data/icons/64.png",
    "128": "data/icons/128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "@youtube-to-mp3-one-click"
    }
  }
}