Examine source code of EK Form

{
  "manifest_version": 2,
  "name": "EK Form",
  "version": "2.1.0",
  "description": "Copy, paste, or clear supported form fields with popup buttons and keyboard shortcuts.",
  "permissions": [
    "activeTab",
    "storage",
    "tabs",
    "webNavigation",
    "<all_urls>"
  ],
  "icons": {
    "48": "icon.svg",
    "96": "icon.svg"
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "48": "icon.svg"
    },
    "default_title": "EK Form"
  },
  "background": {
    "scripts": [
      "form-actions.js",
      "background.js"
    ]
  },
  "commands": {
    "copy-form": {
      "suggested_key": {
        "default": "Ctrl+Alt+R"
      },
      "description": "Copy supported form fields"
    },
    "paste-form": {
      "suggested_key": {
        "default": "Ctrl+Alt+Y"
      },
      "description": "Paste copied form fields"
    },
    "clear-form": {
      "suggested_key": {
        "default": "Ctrl+Alt+D"
      },
      "description": "Clear all supported form fields"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ],
      "all_frames": true,
      "match_about_blank": true,
      "run_at": "document_idle"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{0f368fe7-90a3-4e0d-8fa4-07495fe55a08}",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  }
}