Examine source code of Link Saver

{
  "manifest_version": 2,
  "version": "1.1.6",
  "name": "Link Saver",
  "browser_action": {
    "default_popup": "./HTML/index.html",
    "default_icon": "./IMG/logo_128.png"
  },
  "icons": {
    "48": "./IMG/logo_48.png",
    "64": "./IMG/logo_64.png",
    "128": "./IMG/logo_128.png"
  },
  "permissions": [
    "tabs"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{7e04b8d4-4bde-48f2-95bf-8b01c1e21894}"
    }
  }
}