Examine source code of Screenshots Easy

{
  "manifest_version": 3,
  "name": "Screenshot Easy",
  "version": "3.2.2",
  "description": "Capture and download full page screenshot in PNG, JPG, WebP and PDF file formats easily.",
  "author": "AK and Family",
  "homepage_url": "https://dcalculator.net",
  "browser_specific_settings": {
    "gecko": {
      "id": "screenshot-full-page@dcalculator.net",
      "strict_min_version": "109.0"
    },
    "gecko_android": {
      "strict_min_version": "113.0"
    }
  },
  "permissions": [
    "activeTab",
    "downloads",
    "storage",
    "scripting"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "content_security_policy": {
    "extension_pages": "script-src 'self'; style-src 'self' 'unsafe-inline'; object-src 'self'"
  },
  "web_accessible_resources": [
    {
      "resources": [
        "libs/html2canvas.min.js",
        "libs/jspdf.umd.min.js"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "background": {
    "scripts": [
      "background-firefox.js"
    ]
  },
  "commands": {
    "capture-visible": {
      "suggested_key": {
        "default": "Ctrl+Shift+V",
        "mac": "Command+Shift+V"
      },
      "description": "Capture visible area"
    },
    "capture-full": {
      "suggested_key": {
        "default": "Ctrl+Shift+F",
        "mac": "Command+Shift+F"
      },
      "description": "Capture full page"
    },
    "capture-selected": {
      "suggested_key": {
        "default": "Ctrl+Shift+S",
        "mac": "Command+Shift+S"
      },
      "description": "Capture selected area"
    }
  }
}