Examine source code of DataBlur

{
  "manifest_version": 3,
  "name": "DataBlur - Screen Blur for Privacy",
  "short_name": "DataBlur",
  "description": "Blur sensitive information in real-time. Screen privacy for demos, presentations & recordings. Protect client data automatically.",
  "version": "2.4.3",
  "author": "DataBlur",
  "homepage_url": "https://datablur.app",
  "action": {
    "default_title": "DataBlur",
    "default_popup": "popup.html",
    "default_icon": {
      "16": "assets/logo/16.png",
      "32": "assets/logo/32.png",
      "48": "assets/logo/48.png",
      "128": "assets/logo/128.png"
    }
  },
  "icons": {
    "16": "assets/logo/16.png",
    "32": "assets/logo/32.png",
    "48": "assets/logo/48.png",
    "128": "assets/logo/128.png"
  },
  "content_scripts": [
    {
      "js": [
        "main.js"
      ],
      "css": [
        "pre-hide.css",
        "main.css"
      ],
      "matches": [
        "<all_urls>"
      ],
      "run_at": "document_start",
      "all_frames": false
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "*.js"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "commands": {
    "toggleBlurText": {
      "description": "Blur highlighted text",
      "suggested_key": {
        "default": "Alt+Shift+B"
      }
    },
    "toggleToolbar": {
      "description": "Show/hide blur toolbar",
      "suggested_key": {
        "default": "Alt+Shift+T"
      }
    },
    "removeAllBlurs": {
      "description": "Remove all blurs on page",
      "suggested_key": {
        "default": "Alt+Shift+R"
      }
    },
    "toggleAutoDetect": {
      "description": "Auto-detect and blur sensitive content",
      "suggested_key": {
        "default": "Alt+Shift+A"
      }
    }
  },
  "permissions": [
    "storage",
    "contextMenus",
    "tabs"
  ],
  "content_security_policy": {
    "extension_pages": "default-src 'self'; img-src 'self' data:; style-src 'self'; object-src 'none'; connect-src https://us.i.posthog.com https://eu.i.posthog.com https://us-assets.i.posthog.com https://eu-assets.i.posthog.com"
  },
  "incognito": "spanning",
  "browser_specific_settings": {
    "gecko": {
      "id": "{0631c3d9-6d5c-4f80-a7d4-e4015ad5301d}",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": [
          "technicalAndInteraction"
        ]
      }
    }
  }
}