Youtube MP3 Downloader

manifest.json

{
  "manifest_version": 2,
  "name": "Youtube MP3 Downloader",
  "version": "1.3",
  "description": "Youtube MP3 Downloader for Firefox web browser. It includes a button on any YouTube Video page that allows its users to download the video as MP3 format with one click.",
  "icons": {
    "48": "icons/icon.png",
    "96": "icons/[email protected]"
  },
  "content_scripts": [
    {
      "js": [
        "include/youtube-dl.js"
      ],
      "matches": [
        "http://www.youtube.com/*",
        "https://www.youtube.com/*"
      ],
      "exclude_matches": [
        "http://www.youtube.com/embed/*",
        "https://www.youtube.com/embed/*"
      ],
      "run_at": "document_start"
    }
  ],
  "developer": {
    "name": "NZNBD",
    "url": "https://nznbd.com/"
  },
  "permissions": [
    "*://*.youtube.com/*"
  ],
  "incognito": "spanning"
}