Examine source code of Jiten Reader

{
  "manifest_version": 3,
  "name": "Jiten Reader",
  "version": "1.1.1",
  "description": "Japanese text parsing with Jiten",
  "background": {
    "scripts": [
      "js/background-worker.js"
    ]
  },
  "action": {
    "default_popup": "views/widget.html",
    "default_icon": {
      "16": "assets/16.png",
      "24": "assets/24.png",
      "32": "assets/32.png",
      "48": "assets/48.png",
      "64": "assets/64.png",
      "96": "assets/96.png",
      "128": "assets/128.png"
    },
    "default_title": "Jiten Reader"
  },
  "options_ui": {
    "page": "views/settings.html",
    "open_in_tab": true
  },
  "icons": {
    "16": "assets/16.png",
    "24": "assets/24.png",
    "32": "assets/32.png",
    "48": "assets/48.png",
    "64": "assets/64.png",
    "96": "assets/96.png",
    "128": "assets/128.png"
  },
  "permissions": [
    "contextMenus",
    "offscreen",
    "scripting",
    "storage"
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "js/ajb.js"
      ],
      "all_frames": true,
      "match_about_blank": true
    }
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "assets/*",
        "css/*"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "reader@jiten.moe",
      "strict_min_version": "126.0",
      "data_collection_permissions": {
        "required": [
          "websiteContent"
        ],
        "optional": []
      }
    }
  }
}