Examine source code of Base64ify

{
  "manifest_version": 2,
  "name": "Base64ify",
  "version": "1.1resigned1",
  "description": "Pops up with a dialog box allowing the encode/decode of text into base64. Useful while developing and need t authenticate using basic auth.",
  "homepage_url": "https://jamesmcnee.com",
  "icons": {
    "48": "icons/64.png"
  },
  "permissions": [
    "activeTab"
  ],
  "browser_action": {
    "default_icon": "icons/32.png",
    "default_title": "Base64ify",
    "default_popup": "popup/main.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{a079942c-3429-4154-9c09-011f13e47d75}"
    }
  }
}