Examine source code of Spendentopf

{
  "browser_specific_settings": {
    "gecko": {
      "id": "{7b1f0be7-b847-4e98-87ce-40af56bd0ba2}",
      "strict_min_version": "109.0"
    }
  },
  "author": "wonderunited UG",
  "name": "Spendentopf",
  "version": "2.6.0",
  "manifest_version": 3,
  "description": "Mit der Browser-Erweiterung „Spendentopf“ sammelst und spendest Du Cashback durch Deine Einkäufe und sparst zugleich mit Gutscheinen und Deals.",
  "icons": {
    "16": "src/img/WC_Bildmarke_16.png",
    "48": "src/img/WC_Bildmarke_48.png",
    "128": "src/img/WC_Bildmarke_128.png"
  },
  "default_locale": "de",
  "background": {
    "scripts": [
      "src/classes/background.js"
    ],
    "type": "module"
  },
  "action": {
    "default_icon": "src/img/WC_Bildmarke_19.png",
    "default_title": "Keine Cashbackmöglichkeit, Gutscheine oder Deals für diese Seite verfügbar."
  },
  "host_permissions": [
    "<all_urls>"
  ],
  "permissions": [
    "tabs",
    "storage",
    "alarms"
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "/src/img/WC_Bildmarke_Cashback_Active.png",
        "/src/img/WC_Bildmarke_Cashback_NotActive.png",
        "/src/main.css"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "src/classes/lib/jquery/jquery.js",
        "src/classes/connect.js"
      ],
      "run_at": "document_start",
      "all_frames": true
    },
    {
      "matches": [
        "<all_urls>"
      ],
      "css": [],
      "js": [
        "src/classes/lib/jquery/jquery.js",
        "src/classes/widget.js",
        "src/classes/content.js"
      ],
      "run_at": "document_end",
      "all_frames": false
    }
  ]
}