Examine source code of Cleverbot optimize

{
  "manifest_version": 2,
  "name": "Cleverbot optimize",
  "version": "1.0",
  "description": "Removes images and the hability to send messages without text from cleverbot.com",
  "icons": {
    "48": "cleverbot.jpg"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.cleverbot.com/"
      ],
      "js": [
        "cleverbot_extension.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{21b2421c-128c-49c2-8250-9e6773bdcc0a}"
    }
  }
}