Examine source code of WikiLens

{
  "manifest_version": 3,
  "name": "WikiLens",
  "version": "1.9.0",
  "description": "Select text on any page to instantly preview the matching Wikipedia article with an image and snippet.",
  "homepage_url": "https://ville-mattila.github.io/wikilens/",
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "action": {
    "default_icon": {
      "16": "icons/icon16.png",
      "32": "icons/icon32.png"
    },
    "default_title": "WikiLens",
    "default_popup": "action.html"
  },
  "permissions": [
    "storage"
  ],
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "commands": {
    "lookup-selection": {
      "suggested_key": {
        "default": "Ctrl+Shift+L",
        "mac": "Command+Shift+L"
      },
      "description": "Preview the selected text"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "exclude_matches": [
        "https://*.wikipedia.org/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "host_permissions": [
    "https://*.wikipedia.org/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "wikilens@ville-mattila.github.io",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}