Examine source code of Kapeesh Web Extension

{
  "name": "Kapeesh Web Extension",
  "description": "Web Extenion for https://kapeesh.link ",
  "version": "0.4122",
  "manifest_version": 2,
  "web_accessible_resources": [
    "icons/*"
  ],
  "icons": {
    "16": "/icons/up_16.png",
    "32": "/icons/up_32.png",
    "48": "/icons/up_48.png",
    "128": "/icons/up_128.png"
  },
  "browser_action": {
    "default_title": "Kapeesh",
    "default_icon": {
      "16": "/icons/up_16.png",
      "32": "/icons/up_32.png",
      "48": "/icons/up_48.png",
      "128": "/icons/up_128.png"
    }
  },
  "background": {
    "page": "/html/background.html"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.mail.google.com/*"
      ],
      "js": [
        "./Js/jquery-3.6.0.min.js",
        "./Js/utils.js",
        "./Js/content_gmail.js",
        "./Js/file-upload-with-preview.min.js",
        "./Js/select2.min.js"
      ],
      "css": [
        "./css/content_gmail.css",
        "./css/file-upload-with-preview.min.css",
        "./css/select2.min.css"
      ],
      "run_at": "document_end"
    },
    {
      "matches": [
        "*://twitter.com/*"
      ],
      "js": [
        "./Js/jquery-3.6.0.min.js",
        "./Js/utils.js",
        "./Js/content_twitter.js",
        "./Js/file-upload-with-preview.min.js",
        "./Js/select2.min.js"
      ],
      "css": [
        "./css/content_twitter.css",
        "./css/file-upload-with-preview.min.css",
        "./css/select2.min.css"
      ],
      "run_at": "document_end"
    },
    {
      "matches": [
        "*://*.facebook.com/*"
      ],
      "js": [
        "./Js/jquery-3.6.0.min.js",
        "./Js/utils.js",
        "./Js/content_facebook.js",
        "./Js/file-upload-with-preview.min.js",
        "./Js/select2.min.js"
      ],
      "css": [
        "./css/content_facebook.css",
        "./css/file-upload-with-preview.min.css",
        "./css/select2.min.css"
      ],
      "run_at": "document_end"
    },
    {
      "matches": [
        "*://kapeesh.link/*"
      ],
      "js": [
        "./Js/jquery-3.6.0.min.js",
        "./Js/content_extension_login.js"
      ],
      "css": [
        "./css/content_gmail.css"
      ],
      "run_at": "document_end",
      "all_frames": true
    },
    {
      "matches": [
        "*://web.whatsapp.com/*"
      ],
      "js": [
        "./Js/jquery-3.6.0.min.js",
        "./Js/utils.js",
        "./Js/content_whatsapp.js",
        "./Js/file-upload-with-preview.min.js",
        "./Js/select2.min.js"
      ],
      "css": [
        "./css/content_whatsapp.css",
        "./css/file-upload-with-preview.min.css",
        "./css/select2.min.css"
      ],
      "run_at": "document_end",
      "all_frames": true
    }
  ],
  "permissions": [
    "<all_urls>"
  ]
}