Examine source code of Read Later

{
  "name": "Read Later",
  "description": "Save tabs for later, search them instantly, and organize reading lists into reusable groups.",
  "version": "3.2.0",
  "manifest_version": 3,
  "icons": {
    "16": "img/logo-16.png",
    "32": "img/logo-32.png",
    "48": "img/logo-48.png",
    "128": "img/logo-128.png"
  },
  "action": {
    "default_popup": "popup.html",
    "default_icon": "img/logo-48.png"
  },
  "commands": {
    "save_tabs": {
      "suggested_key": {
        "default": "Ctrl+B",
        "mac": "MacCtrl+B"
      },
      "description": "Send a 'read-later' event to the extension"
    },
    "_execute_action": {
      "suggested_key": {
        "default": "Ctrl+Shift+B",
        "mac": "MacCtrl+Shift+B"
      }
    }
  },
  "background": {
    "scripts": [
      "service-worker-loader.js"
    ],
    "type": "module"
  },
  "web_accessible_resources": [
    {
      "matches": [],
      "resources": [
        "img/logo-16.png",
        "img/logo-32.png",
        "img/logo-48.png",
        "img/logo-128.png",
        "groups.html"
      ]
    }
  ],
  "permissions": [
    "storage",
    "tabs"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "read-later@paulcoding.com"
    }
  }
}