Examine source code of (simple web)

{
  "manifest_version": 2,
  "name": "The Simple Web",
  "version": "0.1.0",
  "description": "An Abstract View of the Web",
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "browser_action": {
    "default_icon": {
      "32": "images/icon32-off.png"
    }
  },
  "permissions": [
    "tabs",
    "activeTab",
    "<all_urls>"
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content_script.js"
      ]
    }
  ],
  "icons": {
    "16": "images/icon16.png",
    "48": "images/icon48.png",
    "128": "images/icon128.png"
  }
}