Examine source code of Scholar Accessibility Aid

{
  "manifest_version": 2,
  "name": "Scholar Accessibility Aid",
  "version": "1.0",
  "description": "An accessibility aid to change web fonts to Open Dyslexic, define words with pronounciation, and read text aloud.",
  "permissions": [
    "storage",
    "scripting",
    "contextMenus",
    "tabs",
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "images/icon16.png",
      "48": "images/icon48.png"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_start"
    }
  ],
  "web_accessible_resources": [
    "fonts/*.woff2",
    "font-override.css"
  ],
  "icons": {
    "16": "images/icon16.png",
    "48": "images/icon48.png",
    "128": "images/icon128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "linohugo97@gmail.com"
    }
  }
}