Examine source code of FKgetty

{
  "description": "Download images from photobases",
  "manifest_version": 2,
  "name": "FKgetty",
  "version": "0.4.1",
  "icons": {
    "48": "icons/rtutu-48.png",
    "96": "icons/rtutu-96.png"
  },
  "permissions": [
    "*://*.gettyimages.com/*",
    "*://*.yimg.com/*",
    "*://*.visualrian.ru/*",
    "activeTab",
    "downloads",
    "downloads.open",
    "notifications"
  ],
  "browser_action": {
    "default_icon": "icons/rtutu-32.png",
    "theme_icons": [
      {
        "light": "icons/rtutu-32-light.png",
        "dark": "icons/rtutu-32.png",
        "size": 32
      }
    ],
    "default_title": "FKgetty",
    "default_popup": "popup/choose_qual.html"
  },
  "web_accessible_resources": [
    "dwbts/link-48.png",
    "dwbts/dloadhd.png",
    "dwbts/dloadhd0.png",
    "dwbts/dloadsd.png",
    "dwbts/dloadsd0.png",
    "dwbts/dloado.png",
    "dwbts/dloado0.png",
    "dwbts/dloadria.png",
    "dwbts/dloadria0.png"
  ],
  "background": {
    "scripts": [
      "background-script.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.gettyimages.com/*",
        "*://*.gettyimages.ca/*",
        "*://*.gettyimages.co.jp/*",
        "*://*.gettyimages.co.uk/*",
        "*://*.gettyimages.de/*",
        "*://*.gettyimages.nl/*",
        "*://*.yimg.com/*",
        "*://*.visualrian.ru/*",
        "*://*.gallery.ru/*"
      ],
      "js": [
        "content_scripts/cs.js"
      ]
    }
  ]
}