Examine source code of LëtzLookup

{
  "manifest_version": 3,
  "name": "LëtzLookup",
  "description": "Look up selected Luxembourgish words in the LOD dictionary.",
  "version": "0.1.0",
  "icons": {
    "16": "icon/16.png",
    "32": "icon/32.png",
    "48": "icon/48.png",
    "128": "icon/128.png"
  },
  "permissions": [
    "activeTab",
    "scripting",
    "contextMenus",
    "storage"
  ],
  "host_permissions": [
    "https://lod.lu/*"
  ],
  "action": {
    "default_title": "LëtzLookup",
    "default_popup": "popup.html"
  },
  "commands": {
    "lookup-selection": {
      "suggested_key": {
        "default": "Alt+Shift+L",
        "mac": "Alt+Shift+L"
      },
      "description": "Look up selected Luxembourgish text"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "letzlookup@ngolau-apps",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "websiteContent"
        ]
      }
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  }
}