Examine source code of Rize

{
  "content_scripts": [
    {
      "js": [
        "content.js"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "icons": {
    "16": "icons/16x16.png",
    "32": "icons/32x32.png",
    "48": "icons/48x48.png",
    "128": "icons/128x128.png"
  },
  "name": "Rize",
  "permissions": [
    "tabs"
  ],
  "version": "1.0.0.4",
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "description": "Extends the compatibility of Rize on Firefox so that URLs can be detected.",
  "manifest_version": 2,
  "browser_specific_settings": {
    "gecko": {
      "id": "{924d9acb-3fb3-463b-977f-5846acae09f4}"
    }
  }
}