Examine source code of Suggest Paperview

{
  "manifest_version": 2,
  "name": "Suggest Paperview",
  "version": "0.0.0.1",
  "author": "Henrique Saias",
  "description": "A 1-click utility to easily request a more modern paywall to publishers that still rely on the outdated subscription-only model.",
  "icons": {
    "16": "icon 16.png",
    "48": "icon 48.png",
    "128": "icon 128.png"
  },
  "browser_action": {
    "default_icon": {
      "16": "icon 16.png",
      "48": "icon 48.png",
      "128": "icon 128.png"
    },
    "default_title": "Suggest Paperview",
    "default_popup": "popup.html"
  },
  "background": {
    "scripts": [
      "background.js",
      "popup.js"
    ],
    "persistent": false
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": false
  },
  "permissions": [
    "activeTab",
    "storage",
    "*://iwish2read.com/"
  ],
  "web_accessible_resources": [
    "options.html"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{6b5c028e-4eaf-4aa2-a3b0-aa02d76c0878}",
      "strict_min_version": "80.0"
    }
  }
}