Examine source code of File Upload Blocker

{
  "manifest_version": 2,
  "name": "__MSG_appName__",
  "description": "__MSG_appDesc__",
  "default_locale": "en",
  "version": "1.0.3",
  "background": {
    "scripts": [
      "js/background.js"
    ],
    "persistent": true
  },
  "permissions": [
    "<all_urls>",
    "storage",
    "scripting"
  ],
  "browser_action": {
    "default_icon": "images/icon128.png",
    "default_popup": "html/popup.html"
  },
  "icons": {
    "16": "images/icon16.png",
    "48": "images/icon48.png",
    "128": "images/icon128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "all_frames": true,
      "js": [
        "js/jquery-3.6.0.min.js",
        "js/script.js"
      ],
      "run_at": "document_start"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "strict_min_version": "100.0",
      "id": "{a52c6835-dbdf-4308-afc2-8a39c9c1f193}"
    }
  }
}