Examine source code of Tab Title Tamer

{
  "manifest_version": 3,
  "name": "Tab Title Tamer",
  "version": "1.3.0",
  "description": "Take control of tab titles! Stop changes on inactive tabs & remove number clutter. Highly configurable with site-specific rules.",
  "author": "RomsKidd",
  "icons": {
    "16": "images/icon16.png",
    "48": "images/icon48.png",
    "128": "images/icon128.png"
  },
  "permissions": [
    "storage"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "images/icon16.png",
      "48": "images/icon48.png"
    }
  },
  "background": {
    "scripts": [
      "lib/ExtPay.js",
      "lib/tt-domain.js",
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "lib/tt-domain.js",
        "content_script.js"
      ],
      "run_at": "document_idle",
      "all_frames": false
    },
    {
      "matches": [
        "https://extensionpay.com/*"
      ],
      "js": [
        "ExtPay.js"
      ],
      "run_at": "document_start",
      "all_frames": true
    }
  ],
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "web_accessible_resources": [
    {
      "resources": [
        "images/*.png",
        "lib/ExtPay.js",
        "lib/tt-domain.js",
        "ExtPay.js",
        "options.html",
        "popup.html"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "romskidd@gmail.com",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  }
}