Examine source code of vReddit Ripper

{
  "name": "vReddit Ripper",
  "version": "1.3",
  "description": "Reddit videos to the rest of the internet where they can be shared.",
  "manifest_version": 2,
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "permissions": [
    "https://reddit.com/",
    "https://www.reddit.com/"
  ],
  "page_action": {
    "default_icon": {
      "16": "images/vreddit_ripper16.png",
      "32": "images/vreddit_ripper32.png",
      "48": "images/vreddit_ripper48.png",
      "128": "images/vreddit_ripper128.png"
    }
  },
  "icons": {
    "16": "images/vreddit_ripper16.png",
    "32": "images/vreddit_ripper32.png",
    "48": "images/vreddit_ripper48.png",
    "128": "images/vreddit_ripper128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "https://*.reddit.com/*",
        "https://reddit.com/*"
      ],
      "js": [
        "index.js"
      ],
      "css": [
        "styles.css"
      ]
    }
  ]
}