Examine source code of Full Page Screenshot-DragShot

{
  "manifest_version": 3,
  "name": "DragShot",
  "version": "2.1.0",
  "description": "Capture full pages, visible screens, or a selected area. Crop, annotate, and export as PNG, JPG, WebP, or PDF. Nothing ever leaves your device.",
  "author": "Md. Habibur Rahman",
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "action": {
    "default_popup": "src/popup/index.html",
    "default_title": "DragShot",
    "default_icon": {
      "16": "icons/icon16.png",
      "32": "icons/icon32.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "options_ui": {
    "page": "src/settings/index.html",
    "open_in_tab": true
  },
  "permissions": [
    "activeTab",
    "scripting",
    "storage",
    "downloads",
    "alarms"
  ],
  "commands": {
    "capture-visible": {
      "suggested_key": {
        "default": "Ctrl+Shift+S",
        "mac": "Command+Shift+S"
      },
      "description": "Capture the visible area"
    },
    "capture-full-page": {
      "suggested_key": {
        "default": "Ctrl+Shift+F",
        "mac": "Command+Shift+F"
      },
      "description": "Capture the full page"
    },
    "capture-select-area": {
      "suggested_key": {
        "default": "Ctrl+Shift+A",
        "mac": "Command+Shift+A"
      },
      "description": "Select an area to capture"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "habiburhridoy01@gmail.com",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}