Examine source code of Picshot

{
  "manifest_version": 3,
  "name": "Picshot",
  "version": "1.0.0",
  "description": "Capture a region of any page, annotate it, and copy to clipboard. Fast, private, zero network.",
  "permissions": [
    "activeTab",
    "scripting",
    "storage",
    "downloads",
    "clipboardWrite",
    "notifications"
  ],
  "action": {
    "default_title": "Picshot — capture region (Ctrl+Shift+Y)",
    "default_icon": {
      "16": "icons/icon-16.png",
      "48": "icons/icon-48.png",
      "128": "icons/icon-128.png"
    }
  },
  "options_ui": {
    "page": "options/options.html",
    "open_in_tab": true
  },
  "icons": {
    "16": "icons/icon-16.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "picshot@ukyz",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "commands": {
    "capture": {
      "description": "Trigger screenshot capture on active tab",
      "suggested_key": {
        "default": "Ctrl+Shift+Y",
        "mac": "Command+Shift+Y"
      }
    }
  },
  "web_accessible_resources": [
    {
      "resources": [
        "print/print.html",
        "print/print.js"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "background": {
    "scripts": [
      "background/sw.js"
    ]
  }
}