Examine source code of Page Tinker

{
  "manifest_version": 3,
  "name": "Page Tinker",
  "version": "0.4.0",
  "description": "Click any element to edit its text, hide it, or delete it - no DevTools needed. Undo/redo supported. Changes reset on reload.",
  "author": "HalfToast",
  "homepage_url": "https://github.com/HalfToast/page-tinker",
  "browser_specific_settings": {
    "gecko": {
      "id": "page-tinker@halftoast.dev",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  },
  "permissions": [
    "activeTab",
    "scripting",
    "contextMenus"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "action": {
    "default_title": "Toggle Page Tinker",
    "default_icon": "icon.svg"
  },
  "commands": {
    "toggle-tinker": {
      "suggested_key": {
        "default": "Alt+Shift+E"
      },
      "description": "Toggle Page Tinker on the current tab"
    }
  },
  "icons": {
    "48": "icon.svg",
    "96": "icon.svg"
  }
}