Examine source code of Web Dev Toolkit Pro

{
  "manifest_version": 3,
  "name": "Web Dev Toolkit Pro",
  "version": "6.6.0",
  "description": "Advanced CMS & QA Tools: Multi-View Sync, Smart Overlay, and DOM Inspectors.",
  "browser_specific_settings": {
    "gecko": {
      "id": "web-dev-toolkit-pro@rapp.com",
      "strict_min_version": "121.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "permissions": [
    "storage",
    "tabs",
    "activeTab",
    "scripting",
    "declarativeNetRequest"
  ],
  "host_permissions": [
    "*://*.rapp.com/*",
    "*://*.exacttarget.com/*",
    "*://*.salesforce.com/*",
    "*://*.marketingcloudapps.com/*",
    "*://*.sfmc-content.com/*",
    "*://*.azurewebsites.net/*"
  ],
  "declarative_net_request": {
    "rule_resources": [
      {
        "id": "ruleset_1",
        "enabled": true,
        "path": "rules.json"
      }
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "*://user-content.s4.sfmc-content.com/*"
      ],
      "js": [
        "sfmc-unwrapper.js"
      ],
      "all_frames": true,
      "run_at": "document_start"
    },
    {
      "matches": [
        "*://*.rapp.com/*",
        "*://*.azurewebsites.net/*"
      ],
      "js": [
        "multi-view-frame.js"
      ],
      "all_frames": true,
      "match_about_blank": true,
      "run_at": "document_start"
    },
    {
      "matches": [
        "*://*.rapp.com/*",
        "*://*.azurewebsites.net/*"
      ],
      "js": [
        "content_overlay.js"
      ],
      "all_frames": true,
      "run_at": "document_start"
    },
    {
      "matches": [
        "*://*.rapp.com/*",
        "*://*.azurewebsites.net/*"
      ],
      "js": [
        "environment-ribbon.js"
      ],
      "all_frames": true,
      "run_at": "document_end"
    },
    {
      "matches": [
        "*://*.rapp.com/*",
        "*://*.azurewebsites.net/*",
        "*://user-content.s4.sfmc-content.com/*"
      ],
      "js": [
        "alias-outliner.js"
      ],
      "all_frames": true,
      "run_at": "document_end"
    }
  ],
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "images/icon16.png",
      "48": "images/icon48.png",
      "128": "images/icon128.png"
    }
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "commands": {
    "_execute_action": {
      "suggested_key": {
        "default": "Ctrl+Shift+U",
        "mac": "Command+Shift+U"
      },
      "description": "Open Web Dev Toolkit Pro"
    },
    "toggle-debug": {
      "suggested_key": {
        "default": "Alt+Shift+D",
        "mac": "Alt+Shift+D"
      },
      "description": "Toggle debug=true parameter on the active tab"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "icons": {
    "16": "images/icon16.png",
    "48": "images/icon48.png",
    "128": "images/icon128.png"
  }
}