Examine source code of Highlight text

{
  "name": "__MSG_extName__",
  "description": "__MSG_extDescription__",
  "version": "2.5.3",
  "manifest_version": 2,
  "default_locale": "en",
  "browser_specific_settings": {
    "gecko": {
      "id": "highlight-text@berdlteam.github.io",
      "strict_min_version": "78.0"
    }
  },
  "permissions": [
    "storage",
    "tabs",
    "activeTab",
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "icons": {
    "48": "icons/48x48.png",
    "96": "icons/96x96.png",
    "512": "icons/512x512.png"
  },
  "browser_action": {
    "default_title": "__MSG_actionTitle__",
    "default_popup": "popup.html",
    "default_icon": {
      "48": "icons/48x48.png",
      "96": "icons/96x96.png",
      "512": "icons/512x512.png"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "web_accessible_resources": [
    "icons/16x16.png",
    "icons/48x48.png",
    "icons/64x64.png",
    "vendor/jspdf.umd.min.js"
  ]
}