Examine source code of AsciiTranslator

{
  "manifest_version": 2,
  "name": "Translator",
  "version": "0.4.4resigned1",
  "description": "Show the value of a character(hex, dec, bin) and vice versa.",
  "icons": {
    "50": "icons/translator.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*/*"
      ],
      "js": [
        "translator.js"
      ]
    }
  ],
  "browser_action": {
    "default_icon": {
      "19": "icons/translator.png",
      "38": "icons/translator.png"
    },
    "default_title": "Translator",
    "default_popup": "index.html"
  },
  "commands": {
    "toggle-feature": {
      "suggested_key": {
        "default": "Ctrl+Shift+Y"
      },
      "description": "OpenPopup"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{948180f5-90db-48a4-8a4d-18155c86ac29}"
    }
  }
}