Examine source code of Slash///Line

{
  "manifest_version": 3,
  "name": "Slash///Line",
  "version": "1.1.1",
  "description": "One-tap capture of a play-by-play page from your scorekeeping site into Slashline.",
  "browser_specific_settings": {
    "gecko": {
      "id": "capture@slashline.app",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "websiteContent"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "https://web.gc.com/*",
        "https://www.perfectgame.org/*",
        "https://perfectgame.org/*"
      ],
      "js": [
        "client.js",
        "content.js"
      ],
      "run_at": "document_idle"
    },
    {
      "matches": [
        "https://slashline.app/*"
      ],
      "js": [
        "client.js",
        "pair.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "permissions": [
    "storage"
  ],
  "host_permissions": [
    "https://slashline.app/*",
    "https://web.gc.com/*",
    "https://www.perfectgame.org/*",
    "https://perfectgame.org/*"
  ],
  "action": {
    "default_title": "Slash///Line",
    "default_popup": "popup.html",
    "default_icon": {
      "48": "icons/icon-48.png",
      "96": "icons/icon-96.png"
    }
  },
  "icons": {
    "48": "icons/icon-48.png",
    "64": "icons/icon-64.png",
    "96": "icons/icon-96.png",
    "128": "icons/icon-128.png",
    "256": "icons/icon-256.png",
    "512": "icons/icon-512.png"
  }
}