capito - Just write

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "icons": {
    "16": "icon16.plasmo.d3e4d3f7.png",
    "32": "icon32.plasmo.6ce95fc1.png",
    "48": "icon48.plasmo.94e81554.png",
    "64": "icon64.plasmo.046fdc66.png",
    "128": "icon128.plasmo.504231d3.png"
  },
  "manifest_version": 3,
  "action": {
    "default_icon": {
      "16": "icon16.plasmo.d3e4d3f7.png",
      "32": "icon32.plasmo.6ce95fc1.png",
      "48": "icon48.plasmo.94e81554.png",
      "64": "icon64.plasmo.046fdc66.png",
      "128": "icon128.plasmo.504231d3.png"
    },
    "default_popup": "popup.html"
  },
  "version": "2.2.6",
  "author": "capito - CFS GmbH",
  "name": "__MSG_extensionName__",
  "description": "__MSG_extensionDescription__",
  "permissions": [
    "storage",
    "webNavigation",
    "cookies"
  ],
  "background": {
    "service_worker": "background.ac99bb12.js"
  },
  "content_scripts": [
    {
      "matches": [
        "https://*/*",
        "http://*/*"
      ],
      "js": [
        "CapitoWidgetInjection.c1f5cb82.js"
      ],
      "all_frames": true,
      "match_about_blank": true,
      "css": [
        "font.58f6b0d3.css"
      ]
    },
    {
      "matches": [
        "https://*/*",
        "http://*/*"
      ],
      "js": [
        "SpacerService.939cdf3a.js"
      ],
      "match_about_blank": true,
      "all_frames": false,
      "css": []
    }
  ],
  "host_permissions": [
    "https://*/*",
    "http://*/*"
  ],
  "default_locale": "de",
  "web_accessible_resources": [
    {
      "matches": [
        "https://*/*",
        "http://*/*"
      ],
      "resources": [
        "font.667ecc10.ttf",
        "style.17960098.css"
      ]
    }
  ]
}