Examine source code of Jiffy Reader

{
  "icons": {
    "16": "icon16.plasmo.3b5d1174.png",
    "32": "icon32.plasmo.bd5a20bb.png",
    "48": "icon48.plasmo.44b67406.png",
    "64": "icon64.plasmo.b6deb61a.png",
    "128": "icon128.plasmo.0fbe8982.png"
  },
  "manifest_version": 2,
  "browser_action": {
    "default_icon": {
      "16": "icon16.plasmo.3b5d1174.png",
      "32": "icon32.plasmo.bd5a20bb.png",
      "48": "icon48.plasmo.44b67406.png",
      "64": "icon64.plasmo.b6deb61a.png",
      "128": "icon128.plasmo.0fbe8982.png"
    },
    "default_popup": "popup.html"
  },
  "version": "1.8.7",
  "author": "",
  "name": "Jiffy Reader",
  "description": "A Browser Extension for Faster Reading on ANY website!",
  "homepage_url": "https://github.com/ansh/jiffyreader.com#readme",
  "background": {
    "scripts": [
      "background.9ce4cf36.js"
    ]
  },
  "permissions": [
    "storage",
    "activeTab",
    "declarativeNetRequestWithHostAccess",
    "<all_urls>"
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content_script.3ccf5765.js"
      ],
      "all_frames": true,
      "run_at": "document_start",
      "css": []
    },
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.5602cefb.js"
      ],
      "all_frames": true,
      "run_at": "document_end",
      "css": []
    }
  ],
  "version_name": "1.8.7-prod",
  "default_locale": "en",
  "commands": {
    "toggle-bionic": {
      "suggested_key": {
        "default": "Alt+W"
      },
      "description": "Toggle bionic reading mode"
    }
  },
  "web_accessible_resources": [
    "assets/icon512.png",
    "assets/sun-light-solid.svg",
    "assets/moon-solid.svg",
    "meucci.js",
    "tabs/pascoli.html",
    "content.bb63f209.css"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{93f81583-1fd4-45cc-bff4-abba952167bb}"
    }
  }
}