Examine source code of SnapBlur — Full Page Capture

{
  "manifest_version": 3,
  "name": "SnapBlur — Full Page Capture, Blur & Annotate",
  "short_name": "SnapBlur",
  "description": "Full-page screenshots with blur, arrows, text, highlights and crop. Download, copy or share. Works on any page.",
  "version": "2.0.0",
  "browser_specific_settings": {
    "gecko": {
      "id": "snapblur@bulldozestore.com",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  },
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "permissions": [
    "activeTab",
    "scripting",
    "storage",
    "unlimitedStorage",
    "tabs",
    "downloads",
    "clipboardWrite",
    "notifications"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "action": {
    "default_popup": "popup/popup.html",
    "default_title": "SnapBlur — Capture, Blur & Share"
  },
  "background": {
    "scripts": [
      "background-firefox.js"
    ]
  },
  "commands": {
    "_execute_action": {
      "suggested_key": {
        "default": "Ctrl+Shift+S",
        "mac": "Command+Shift+S"
      },
      "description": "Capture current page"
    }
  },
  "web_accessible_resources": [
    {
      "resources": [
        "icons/*",
        "editor/*",
        "welcome/*"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ]
}