Examine source code of BiReader

{
  "manifest_version": 2,
  "name": "BiReader",
  "version": "2.0",
  "description": "Based off of the principles of Bionic Reader to improve speed and depth of reading web text!",
  "icons": {
    "48": "icons/48.png",
    "96": "icons/96.png"
  },
  "browser_action": {
    "default_icon": "icons/32.png",
    "default_title": "Turn BiReader On",
    "default_popup": "popup.html"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "reader.js"
      ],
      "css": [
        "loading.css"
      ]
    }
  ],
  "web_accessible_resources": [
    "assets/water.css",
    "icons/32.png"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{c0b92f90-09f0-4407-83c9-08613231fc8e}"
    }
  },
  "permissions": [
    "storage"
  ]
}