Examine source code of Threads Media Downloader

{
  "manifest_version": 2,
  "name": "Threads Media Downloader",
  "version": "1.3.2",
  "description": "Download all media files from Threads user pages with datetime-based filenames",
  "permissions": [
    "downloads",
    "storage",
    "tabs",
    "https://*.threads.net/*",
    "https://*.threads.com/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "matches": [
        "https://www.threads.net/*",
        "https://threads.net/*",
        "https://www.threads.com/*",
        "https://threads.com/*"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "assets/icon16.png",
      "48": "assets/icon48.png",
      "128": "assets/icon128.png"
    }
  },
  "icons": {
    "16": "assets/icon16.png",
    "48": "assets/icon48.png",
    "128": "assets/icon128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "threads-downloader@itsmaxyd.github.io",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "on_install": false,
        "on_update": false,
        "required": [
          "none"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "120.0"
    }
  }
}