Examine source code of Abstract-PDF Switcher

{
  "manifest_version": 2,
  "name": "Abstract PDF Switcher",
  "version": "1.1resigned1",
  "description": "Switch between abstracts and pdfs",
  "permissions": [
    "tabs"
  ],
  "icons": {
    "48": "icons/outline-compare_arrows-24px.svg"
  },
  "background": {
    "scripts": [
      "switch.js"
    ]
  },
  "page_action": {
    "default_icon": "icons/outline-compare_arrows-24px.svg",
    "default_title": "ABS-PDF Switcher"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{dda4355c-0667-4698-b1d5-274a7bd5b391}"
    }
  }
}