Examine source code of Text-Encrypt-Hash

{
  "manifest_version": 3,
  "name": "Text-Encrypt-Hash",
  "description": "A tool for encrypting/decrypting text",
  "version": "1.1.0",
  "icons": {
    "64": "icon.png"
  },
  "action": {
    "default_popup": "index.html",
    "default_title": "Text Encrypt-Hash"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{8c910306-2e41-454f-b67b-8e2a61300dda}",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}