Examine source code of Image Map Editor

{
  "name": "__MSG_extensionName__",
  "description": "__MSG_extensionDescription__",
  "manifest_version": 2,
  "version": "2.4.2",
  "homepage_url": "http://www.hjb-seite.de/projekte/pro09.htm",
  "icons": {
    "48": "icons/48.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "an@hjb-seite.de",
      "strict_min_version": "57.0"
    }
  },
  "permissions": [
    "notifications",
    "clipboardWrite",
    "tabs",
    "activeTab",
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "hjbddorfimebackground.js"
    ]
  },
  "browser_action": {
    "browser_style": true,
    "default_icon": "icons/32.png",
    "default_title": "__MSG_extensionName__",
    "default_popup": "popup/ui.html"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "hjbddorfimecontentscript.js",
        "hjbddorfimegraphic.js",
        "dialog/hjbddorfimeui.js"
      ],
      "css": [
        "hjbddorfime.css",
        "dialog/hjbddorfimeui.css"
      ],
      "run_at": "document_idle"
    }
  ],
  "default_locale": "en"
}