Examine source code of CaptureKit - Full Page Screenshot & Annotate

{
  "manifest_version": 3,
  "name": "CaptureKit - Full Page Screenshot & Annotate",
  "version": "1.6.0",
  "description": "Full page screenshot tool: capture entire web pages or scroll, then annotate, blur, crop & save as PNG, JPEG or PDF.",
  "permissions": [
    "activeTab",
    "scripting",
    "downloads",
    "storage",
    "unlimitedStorage",
    "tabs"
  ],
  "host_permissions": [
    "https://api.imgur.com/*"
  ],
  "options_page": "options.html",
  "action": {
    "default_popup": "popup.html",
    "default_title": "CaptureKit",
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "background": {
    "scripts": [
      "settings.js",
      "background.js"
    ]
  },
  "commands": {
    "capture-full-page": {
      "suggested_key": {
        "default": "Ctrl+Shift+Y",
        "mac": "Command+Shift+Y"
      },
      "description": "Capture full page"
    },
    "capture-visible": {
      "suggested_key": {
        "default": "Alt+Shift+V",
        "mac": "Alt+Shift+V"
      },
      "description": "Capture visible area"
    },
    "capture-region": {
      "suggested_key": {
        "default": "Alt+Shift+R",
        "mac": "Alt+Shift+R"
      },
      "description": "Capture a region"
    },
    "capture-scroll": {
      "description": "Scroll capture (assign a shortcut in chrome://extensions/shortcuts)"
    },
    "capture-element": {
      "description": "Element picker capture (assign a shortcut in chrome://extensions/shortcuts)"
    },
    "capture-scroll-element": {
      "description": "Scrollable-element capture (assign a shortcut in chrome://extensions/shortcuts)"
    }
  },
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "capturekit@araza5193.dev",
      "strict_min_version": "115.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": [
          "websiteContent"
        ]
      }
    }
  }
}