Examine source code of TL;DR Summarizer

{
  "manifest_version": 2,
  "name": "TL;DR Summarizer",
  "version": "1.4.3",
  "description": "Get the gist of long reads instantly. This extension extracts a page's main text and ranks its sentences with a local TextRank model to surface the 3–5 most important ones, then lets you copy them.",
  "icons": {
    "32": "graphics/icon-32.png",
    "48": "graphics/icon-48.png",
    "64": "graphics/icon-64.png",
    "96": "graphics/icon-96.png",
    "128": "graphics/icon-128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{94c73adb-8c05-4e11-8762-2c2529ccdfbb}",
      "strict_min_version": "101.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "permissions": [
    "activeTab"
  ],
  "browser_action": {
    "default_title": "TL;DR Summarizer",
    "default_popup": "app/popup.html",
    "default_icon": {
      "32": "graphics/icon-32.png",
      "48": "graphics/icon-48.png",
      "64": "graphics/icon-64.png"
    }
  }
}