Examine source code of Bare Blocker

{
  "manifest_version": 2,
  "name": "Bare Blocker",
  "description": "This extension helps you get a barer, lighter browsing experience by stopping images and fonts from loading without their consent",
  "version": "1.3resigned1",
  "icons": {
    "16": "icons/16_on.png",
    "48": "icons/48.png",
    "128": "icons/128.png"
  },
  "browser_action": {
    "default_icon": {
      "19": "icons/19.png",
      "38": "icons/38.png"
    },
    "default_popup": "popup/index.html"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*/*"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "background": {
    "scripts": [
      "background/main.js",
      "background/whitelist_tmp.js",
      "background/storage.js"
    ]
  },
  "permissions": [
    "storage",
    "webRequest",
    "webRequestBlocking",
    "tabs",
    "*://*/*"
  ],
  "web_accessible_resources": [
    "simple.svg"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{9c6d764f-6d19-4df1-8536-076c50e5df07}"
    }
  }
}