Examine source code of CSDC Downloader

{
  "manifest_version": 2,
  "name": "CSDC Downloader",
  "description": "CSDC Archive Download Tool",
  "version": "0.0.2",
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": "icons/icon-16x16.png"
  },
  "content_scripts": [
    {
      "matches": [
        "https://astroarchive.noirlab.edu/*",
        "https://*.csdc.noirlab.edu/*",
        "http://localhost:8060/*"
      ],
      "js": [
        "/content.js"
      ],
      "css": [
        "extension_content.css"
      ]
    }
  ],
  "web_accessible_resources": [
    "/icons/icon-16x16.png",
    "/csdc-logo.svg"
  ],
  "permissions": [
    "storage",
    "downloads"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{32ea97f2-3033-44b6-acc9-8c4f5de129e1}"
    }
  }
}