Examine source code of Highlighty Search Find

{
  "name": "Highlighty Search Find",
  "description": "Searching and Multi Highlighting made effortless! It's the most efficient way to find and highlight any text on the web.",
  "version": "2.3.5",
  "manifest_version": 2,
  "browser_action": {
    "default_popup": "index.html",
    "default_title": "Highlighty"
  },
  "author": "Webmind Technologies S.R.L",
  "options_page": "index.html",
  "icons": {
    "16": "icon16.png",
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "background": {
    "scripts": [
      "./static/js/background.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "./static/js/content.js"
      ]
    }
  ],
  "devtools_page": "index.html",
  "permissions": [
    "storage",
    "unlimitedStorage",
    "<all_urls>"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{ec2c613f-c2b1-44ca-bc8c-750d7b6987c2}"
    }
  }
}