Examine source code of archive-it-today

{
  "manifest_version": 2,
  "name": "archive-it",
  "description": "Lightweight archive.today website capture extension",
  "version": "0.0.1",
  "icons": {
    "144": "icons/icon.png"
  },
  "permissions": [
    "tabs"
  ],
  "browser_action": {
    "default_icon": "icons/icon.png",
    "default_title": "Archive it!"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{75c4d06f-f4d0-4c00-9adf-fb3d6da8396e}"
    }
  }
}